# Energy transition: the industrial, financial and geopolitical reorganization of the world energy system The energy transition is not an instantaneous replacement of fossil fuels with renewable electricity. It changes the machinery that generates energy, the equipment that consumes it, the infrastructure connecting regions, the ownership of resources and the distribution of economic returns. Because energy is indispensable to production, transportation, housing and public services, changes in its cost and reliability propagate through virtually every industry. The relevant transformation comprises power stations, refineries, industrial boilers, transmission lines, mines, vehicle fleets and financial contracts. A solar module installed today is one part of a system whose other equipment may operate for several decades. The International Renewable Energy Agency reported global renewable power capacity of approximately 5,149 gigawatts at the end of 2025, following additions of about 692 GW. Renewable technologies accounted for 85.6% of newly added electricity capacity. Those figures describe installed capacity, not delivered electricity or the share of all energy services. The International Energy Agency reported that energy-related carbon dioxide emissions continued increasing in 2025, by roughly 0.4% to around 38.4 billion tonnes. Rapid diffusion of new power technology therefore coexists with continued use of fossil assets. [1][2] The historical challenge is consequently a problem of replacement, not simply investment. New equipment must be built, connected, financed and operated economically, while existing equipment gradually retires or loses utilization. Energy demand also changes as countries industrialize, populations urbanize, cooling becomes more widespread and electricity-intensive computing expands. Progress measured in the market for new machinery may be much faster than progress measured in total emissions. ## 1. From biomass and coal to the modern electricity system Energy history is better described as accumulation and recombination of sources than a sequence of clean substitutions. Wood remained important after coal began powering European industry. Coal did not disappear after petroleum transformed mobility. Gas increased its market share in systems that had already developed hydroelectricity and nuclear reactors. New sources often expanded the quantity of useful energy available before they displaced established supplies. Population, technology and the prices of complementary equipment determined the pace of change. Coal and steam power reorganized metallurgy, textiles, mining and railways. Industry could concentrate production around coalfields, rail intersections and ports. Petroleum subsequently offered a transportable, energy-dense fuel for automobiles, ships, aircraft and chemical feedstocks. These features made oil central to military logistics and international commerce. Electricity was a different historical breakthrough: it let factories place motors where work happened, improved lighting and enabled refrigeration, communications and urban services. The value of electrification came not only from generators but from distributed wires and machinery adapted to their output. The present transition combines familiar technological competition with an explicit public objective: limiting climate change while protecting energy security. It requires substituting assets that may still have years of engineering life and significant outstanding finance. Consequently, it generates political disputes over compensation, regional employment and public costs. A region producing oil or coal does not experience transition like a city purchasing cheaper electricity. Historical comparison helps explain why available technology does not automatically produce uniform adoption. ## 2. The economic objective: energy services rather than fuel quantities A household does not ultimately demand kilograms of coal, litres of fuel or kilowatt-hours for their own sake. It demands mobility, refrigeration, illumination, heating, air conditioning and communication. Firms demand high-temperature heat, mechanical work and reliable continuous operation. These services can often be delivered using different physical processes. Assessing transition exclusively through primary-energy totals obscures whether services are expanding, becoming more efficient or becoming less affordable. An electric motor can convert a higher proportion of supplied energy into mechanical motion than a comparable combustion engine. A heat pump transfers thermal energy rather than producing all heating through combustion, creating the possibility of providing more heat than its direct electricity consumption when conditions are suitable. Such gains alter the amount of primary energy required for the same service. Statistical conventions for accounting for nuclear, hydro, fossil and renewable energy can also differ. Comparing primary-energy percentages without checking definitions risks mistaking accounting effects for changes in useful services. Income matters. Families without electricity or clean cooking equipment need additional energy access, not merely lower recorded consumption. Industrial expansion in low-income countries can increase absolute electricity use even if production becomes more efficient. A just transition therefore cannot equate development with suppressing demand. Its principal test is whether increasingly reliable services become available at lower environmental and social cost, while carbon-intensive assets genuinely decline over time. ## 3. Capital stocks and the operating life of equipment Power plants, buildings, pipelines, refineries and industrial kilns are long-lived assets. Their owners commit capital today against expectations of future utilization, tariffs, operating costs and regulation. Retirement before anticipated economic life creates stranded assets: financing obligations or expected profits remain, while the asset loses commercial value. The party suffering that loss may be a company shareholder, lender, taxpayer, pension fund, local government or worker whose employment depends on the facility. This helps explain why competition among new technologies proceeds more quickly than national transitions. A new renewable plant may be cheaper to construct than a new fossil station without making every operating fossil station immediately uneconomic. The older asset's capital expenditure has already occurred, so its short-run dispatch decision may depend principally on fuel, labor, maintenance and carbon costs. Forcing retirement can reduce emissions but may require capacity payments, network upgrades or social compensation. Leaving the asset active may preserve reliability but delay emission reductions. Capital allocation is therefore path-dependent. A government that permits a new long-lived gas network today creates financial and institutional interests around its future operation. Conversely, transmission investment, electric-vehicle charging and factory modernization create complementary conditions for low-carbon technologies. Regulatory credibility influences financing costs because investors require confidence that rules governing tariffs, land access and contracts will persist long enough to recover expenditure. ## 4. Levelized cost and the system value of electricity Levelized cost of electricity, or LCOE, estimates the discounted cost of construction, financing, operation and fuel divided by electricity generated over an asset's life. It makes technologies with different capital and running costs more readily comparable. Falling module prices and manufacturing scale have improved the cost competitiveness of solar and wind, and IRENA documents this pattern across its international project sample. Yet LCOE cannot alone determine the least-cost composition of an integrated power system. [4] Electricity must be delivered at a particular time and place with adequate system security. Solar generation concentrated around midday may have less market value as additional installations depress midday prices. Wind output follows meteorological patterns that may not coincide with demand. A dispatchable plant can provide valuable service during scarcity hours even when its average energy cost is higher. The marginal system cost includes balancing, reserves, transmission, distribution, storage and the adequacy of capacity during adverse weather. The analytical comparison must also consider market design. In an energy-only market, low-price periods can reduce revenues even for efficient technologies. Capacity remuneration, long-term contracts or ancillary-service markets may change investment incentives. None of these instruments is intrinsically superior in every institutional setting. The practical task is to reveal the costs of maintaining reliability and assign them transparently, rather than treating either renewable intermittency or fossil dispatchability as a complete economic argument. ## 5. Electricity networks as strategic infrastructure Transmission and distribution are fundamental productive assets. New generation has little value if it cannot reach customers, and cheap electricity in one region cannot reliably serve another when interconnections are constrained. Transmission lines, substations, protective equipment, transformers and grid-control systems need planning and years of construction. Their investment cycles do not necessarily coincide with the rapid expansion of solar manufacturing or data-centre demand. Network scarcity creates several distinct costs. Projects wait in connection queues, operating plants may be instructed to curtail production, consumers face congestion charges or higher local prices, and industrial expansion can be postponed. A low-cost renewable generator that sits idle behind a constrained line is not automatically a cost-saving addition to the economy. Storage near production or consumption may sometimes relieve congestion, but it cannot substitute for long-distance transfer capacity when major regional imbalances persist. The governance problem is unusually difficult because networks often display natural-monopoly characteristics. Parallel competing distribution lines may duplicate fixed costs. Regulators must authorize prudent investment without permitting excessive monopoly returns. Land acquisition, environmental licensing and local participation remain necessary, but procedural uncertainty can also create delay. Faster development depends on coordination among system operators, utilities, equipment manufacturers and communities, not only on private developers securing generation permits. ## 6. Storage, demand flexibility and dependable supply Energy storage shifts the time at which electricity is consumed. Batteries are increasingly useful for intraday balancing, frequency control and smoothing solar production. Pumped hydroelectric storage can move larger quantities of energy using water reservoirs at different elevations. Thermal storage, flexible industrial processes and controlled charging of vehicles can provide alternative forms of temporal adjustment. Their financial value depends on the difference between prices across hours, network charges and the reliability services they deliver. Storage has an energy duration, power capacity and round-trip efficiency. A battery capable of discharging at high power for two hours is not equivalent to a resource that can support a region through several weeks of weak renewable output. Repeated periods of low wind and solar generation, seasonal patterns and droughts require separate reliability analysis. Maintaining adequate supply can involve geographical diversification, flexible demand, reservoir management, interconnections, nuclear generation, gas capacity or other firm resources. The possibility of electrification depends on the combined performance of these elements. A household is not compensated for recurring outages merely because annual generation is cheap. An industrial furnace cannot always interrupt production during a cloudy hour. Grid planning must test adverse weather and equipment failures rather than assuming average output. Reliability also has an explicit distributional dimension: richer consumers can often afford backup systems while poorer households bear the full cost of interruptions. ## 7. Oil and natural gas during technological replacement Oil remains deeply integrated into road transport, aviation, shipping and petrochemicals. Electric vehicles may progressively reduce road-fuel demand, but turnover of the installed fleet takes time, and aviation and some industrial uses are harder to change. Oil producers differ in geology, extraction cost, sovereign finance and the proportion of their national budgets supported by hydrocarbon revenue. Transition consequently redistributes fiscal risk unevenly among exporting states. Natural gas plays several roles that cannot be collapsed into a single label. It generates dispatchable electricity, supplies industrial heat, serves as chemical feedstock and is traded through pipelines or liquefied natural gas infrastructure. In some power systems gas has displaced coal and lowered emissions per unit of generated electricity. Methane leakage, however, reduces climate benefits, while investment in new terminals and pipelines can create long-term dependence. Fuel-price volatility also continues affecting inflation and industrial margins. A scenario in which oil demand reaches a plateau differs materially from an immediate collapse in extraction. Even stable or slowly declining consumption can sustain important cash flows for low-cost producers, while high-cost assets struggle to attract capital. Governments reliant on petroleum revenue must adjust public budgets and diversify employment. Producing nations and importing nations face distinct choices, but both are affected by refining, transport and strategic reserves. ## 8. Coal and the political economy of mining regions Coal remains significant for electricity production and industrial processes, especially where mining, rail transport, steel and local fiscal systems have developed around it. The carbon intensity of coal combustion makes replacement important for emissions reduction, but local incentives can be resistant. Mines employ workers directly, support contractors and suppliers and provide tax receipts. A closure can damage a town's economic base even when national electricity consumers benefit from alternative sources. Coal also intersects with industrial policy. Metallurgical coal supports conventional steelmaking, while thermal coal competes in electricity. Converting industrial processes requires new furnaces, alternative reducing agents, dependable electricity and substantial investment. A country with aging coal power plants and cheap renewable potential faces different financing from one with newly built stations and public lenders whose balance sheets depend on them. Transition policy must distinguish rehabilitation of environmental damage, pensions, retraining and replacement of municipal revenue. Workers cannot be assumed to relocate seamlessly to a wind farm or data centre. Skills, wages, geography and family ties matter. A credible closure programme needs enforceable financing and long-term regional development, not merely promises that aggregate national employment will expand in another sector. ## 9. Equipment manufacturing, industrial learning and geographical concentration Renewable technologies are manufactured goods whose prices reflect scale, engineering learning, supply chains and competition. Solar modules, inverters, wind turbines, batteries and power electronics have distinct industrial structures. High-volume factories can spread research and tooling costs over more units and improve process yields. Sustained demand encourages specialized suppliers. Such dynamics explain part of the cost reductions documented in renewable technology without assuming that materials or energy inputs will always become cheaper. Industrial competitiveness is not equivalent to having abundant sunlight or wind. Countries with exceptional natural resources may import most of their equipment. Others may develop manufacturing clusters through electricity supply, logistics, skills, patient finance and proximity to downstream users. The productive benefits of installing equipment depend on domestic value added, local employment and the terms of intellectual-property and service contracts. Protectionism can support emerging capacity in selected circumstances but also raise costs for deployment. A tariff that improves the prospects of domestic factories may simultaneously delay projects and increase electricity bills. The policy trade-off should be assessed using productivity, supply reliability and the actual learning achieved by firms. The existence of a domestic assembly plant alone does not establish control over components, designs, machinery or strategic minerals. ## 10. Critical minerals: geological reserves versus processing power Batteries, electric motors, transmission equipment and renewable generators require minerals and processed materials. Copper is critical to wiring and grids; lithium, nickel, graphite and other inputs feature in battery chemistry; rare-earth elements are used in selected permanent magnets. The quantities needed vary greatly by technology, and manufacturing innovations can alter mineral intensity. Treating all materials as having identical scarcity or strategic importance distorts the industrial problem. Geological endowment is only the starting point. Exploration, mine development, processing, refining, component production and recycling require different capital and know-how. A country can hold significant deposits while remaining dependent on imported refined materials. Processing facilities may be concentrated abroad because of prior industrial investments, chemical expertise and economies of scale. The IEA's critical-minerals analysis distinguishes resource availability from the concentration of usable supply. [6] Diversification requires time and commercial discipline. Developing an alternative mine does not establish an immediate alternative refining chain. Recycling can reduce primary demand over time, but early expansion of equipment fleets may leave relatively little end-of-life material available. Environmental impacts and relations with local communities also shape project legitimacy. Mineral supply security should be evaluated at every step from deposit to finished product, including ownership, contracts, political stability and transport corridors. ## 11. China, the United States and Europe as industrial models China has developed extensive manufacturing and processing capacity across solar equipment, batteries and related industries. Industrial clusters, infrastructure, domestic demand and state-directed finance reinforced economies of scale. This capacity can lower world equipment prices, benefiting customers abroad, while creating concern over import dependence. China also remains a major consumer of coal. Its industrial leadership does not imply that every component of its domestic energy system is already low-carbon. The United States combines strong research institutions, access to capital, established fossil production and important technology firms. Industrial and energy policy vary by administration and state, producing different incentives for generation, manufacturing and network development. Europe has generally placed greater emphasis on climate regulation and cross-border market integration while confronting the cost of imported energy and competition for manufacturing investment. These strategies involve genuine conflicts between short-run affordability, industrial employment, trade rules and resilience. Building additional domestic factories can increase costs before economies of scale emerge. Heavy reliance on imports can accelerate deployment while generating strategic concerns. The result depends on actual manufacturing productivity, electricity prices, permitting, commercial arrangements and the durability of incentives. National slogans do not substitute for analysis of production capacity and economic trade-offs. ## 12. Trade, tariffs and the distribution of bargaining power Energy transition alters the composition of international trade. Importers may spend less on petroleum over time while buying more batteries, electrical equipment and refined materials. Exporters of oil and gas may lose some revenue or face pressure to restructure. Countries controlling competitively priced manufacturing or specialized processing can gain negotiating leverage, but this is not the same as controlling a country's entire energy system. Tariffs, subsidies, sanctions and export restrictions can fragment supply chains. They may encourage diversification and domestic investment, but they can raise final equipment prices and delay emissions reductions. Strategic autonomy is costly when alternative suppliers operate below efficient scale. It is also incomplete when domestic factories continue relying on foreign designs, chemicals or specialized machinery. Bargaining power is specific to contracts and substitution possibilities. An importer with multiple suppliers, inventory and the ability to redesign a component has more room to negotiate than one dependent on a single qualified factory. Political risk also differs between fuels that must be replenished continuously and generators whose imported components are purchased mostly during construction. This distinction makes the security economics of renewable systems different from that of petroleum trade. ## 13. Energy security under greater electrification Traditional energy security focused on access to imported fuels, reserves, shipping routes and producer coordination. A more electrified economy is vulnerable to a different combination of hazards: grid failures, transformer supply, cyberattacks, drought affecting hydropower, insufficient dispatchable supply and weather extremes. Fossil import dependence can fall without eliminating strategic vulnerability. The key change is the increasing importance of electrical continuity. Industrial plants, transport networks, hospitals, communications and digital services become more closely coupled to power infrastructure. Decentralized generation and storage may improve local resilience, but only when islanding, protection and operational design permit continued service during an outage. Otherwise, distributed equipment may shut down when the interconnected network fails. Security assessments should therefore evaluate physical assets and institutions together. Spare transformer inventories, grid-protection systems, emergency dispatch procedures, fuel reserves for remaining thermal stations and regional interconnections all matter. International dependence is also rearranged: purchasing machinery from abroad differs from relying on daily shipments of imported fuel, yet replacement parts, software and maintenance retain geopolitical significance. ## 14. Climate risk and the economics of delay Climate change creates economic costs through drought, heat, storms, floods, wildfires and shifting agricultural conditions. The physical exposure of power systems is particularly important because generation, transmission and consumption are all climate-sensitive. Hydroelectric output falls during some droughts; thermal generation can be restricted by water availability; cooling demand rises during heat waves; storms damage lines and substations. Investment timing involves both irreversible spending and potentially irreversible climatic harm. Delaying new infrastructure may preserve financial flexibility when technologies are improving quickly, but it can also prolong emissions and leave governments exposed to later emergency spending. Conversely, accelerating projects without adequate planning can create stranded equipment, social conflict and cost overruns. There is no defensible single discount rate that resolves every distributional and intergenerational dispute. Adaptation and mitigation are connected. Reinforcing substations, improving water management and protecting vulnerable populations can reduce damage while power generation becomes cleaner. These projects often compete for public finance, especially in indebted economies. A credible long-term strategy distinguishes actual avoided losses from speculative benefits and recognizes uncertainty in the frequency and severity of future events. ## 15. International financing and unequal borrowing costs Renewable plants often require substantial investment at the beginning of their operating life and relatively low expenditures on fuel afterward. Their cost is therefore particularly sensitive to discount rates and the availability of long-term finance. A project with the same technology and expected production can have a very different electricity price in a country with expensive credit, currency depreciation risk or uncertain contract enforcement. Wealthier economies often enjoy lower financing costs and deeper institutional capital markets. Lower-income countries may have strong solar or wind resources but face higher sovereign yields, foreign-exchange mismatch and constrained utility finances. Public guarantees, development-bank lending and carefully designed contracts can address some risks, but guarantees ultimately create contingent fiscal obligations. Concessional finance cannot compensate indefinitely for unreliable grid planning or contracts that customers cannot afford. International climate finance also raises distributional questions. When the creditor finances imported equipment, part of the resulting demand supports foreign industries. Domestic workers and consumers benefit in different proportions according to local content and pricing. Governments must reconcile fiscal capacity, access for underserved households and industrial development. The true comparison is not merely the nominal project cost but the cost of delivering dependable services over the asset's life. ## 16. Brazil's renewable electricity and fossil-energy challenge Brazil occupies an unusual position. Hydropower, bioenergy and rapid additions of wind and solar support a relatively renewable electricity system, while petroleum products remain important in transportation and industrial activity. The 2026 National Energy Balance, covering 2025, distinguishes the renewable share of the electric matrix, approximately 86.8%, from the renewable share of total energy supply, approximately 49.4%. The difference is fundamental: electricity is only one part of the country's final energy consumption. [3] A high renewable electricity share can create competitive opportunities for industries seeking lower-carbon inputs. It does not automatically imply inexpensive electricity at every location, hour and voltage level. The cost of networks, transmission congestion, hydrological exposure and regulatory charges influences final tariffs. Likewise, reducing oil dependence requires vehicle replacement, urban transport planning, industrial electrification and suitable alternative fuels. Brazil must also examine how investment affects national production. Importing cheap modules may accelerate generation growth, while domestic research, equipment manufacturing and engineering services could create jobs and technological capabilities. Policy should not confuse these objectives: generation deployment and domestic industrial development can reinforce each other, but their costs and benefits must be evaluated separately. ## 17. Hydropower, territory and Brazilian distributive conflicts Hydroelectric generation has shaped Brazil's electricity system, industrial geography and territorial politics. Reservoirs can provide flexibility, energy storage and some drought-management functions, but dams alter ecosystems and river flows and may displace communities. Historical construction programmes brought electricity to factories and cities while imposing highly uneven local costs. These effects remain central to decisions on new capacity and repowering existing plants. The economic analysis needs to account for water availability, environmental obligations, transmission distance, reservoir management and competing uses of water. A project can offer system services while creating losses for fisheries, Indigenous peoples or downstream communities. Royalties and compensation do not necessarily replace cultural, ecological or subsistence value. Consultation and enforceable environmental safeguards are therefore part of legitimate infrastructure governance. Repowering and modernization may raise output or flexibility without reproducing the physical impacts of entirely new reservoirs, although each case requires engineering assessment. The role of hydro also changes as variable renewables expand: storage and ramping services can be increasingly valuable. These benefits require attention to seasonal drought, climate variability and the opportunity cost of reserving water for later periods. ## 18. Brazilian solar, wind and generation curtailment Brazil has abundant solar and wind resources, including high-quality wind regimes in the northeast. Falling equipment costs and new developers have encouraged rapid expansion. Yet projects are increasingly sensitive to network availability and grid-management constraints. Curtailment occurs when a generator technically could produce electricity but is instructed to reduce output because of security, congestion or other system requirements. Curtailment has financial consequences. A project may carry debt and fixed obligations even when available energy cannot be sold. Investors then revise expected revenue, which can increase the cost of finance for future projects. Curtailment also has system-wide implications: consumers might benefit from cheaper potential generation while still paying for networks, reserves and other charges needed to make electricity deliverable. Solutions are necessarily combinations of network reinforcement, operational improvements, improved geographic signals, storage and more flexible demand. Assigning the entire problem to developers, system operators or customers overlooks the institutional structure. The timing of investment matters: authorizing new generation without corresponding transmission can transform attractive resources into commercially unstable projects. ## 19. Brazilian transport, biofuels and industrial transformation Transport is an important source of fossil-energy demand in Brazil. Electrifying road vehicles can reduce fuel use, but turnover depends on vehicle prices, financing, charging networks and consumer preferences. Public transport modernization can produce emission and mobility benefits without requiring each household to purchase an electric car. Urban geography and commuting patterns influence the social distribution of any policy. Brazil also has extensive experience with ethanol, biodiesel and agricultural supply chains. Biofuels may offer substitution in suitable applications and support rural production, but they require assessment of land use, agricultural inputs, productivity and lifecycle emissions. Their climate performance is not independent of production methods or the displacement of other land uses. Competing demands for food, export crops and biomass must be included in strategic planning. Industrial electrification involves separate technical obstacles. Low-temperature heat may be amenable to established electrical alternatives, while steel, cement and certain chemical processes demand more difficult redesign. Successful transformation depends on finance, engineering skills, stable energy contracts and markets willing or required to purchase lower-emission output. The country's natural endowment is an advantage, not a substitute for productive capability. ## 20. Hydrogen as an industrial input, not a universal energy solution Hydrogen can serve as a chemical feedstock and, in selected processes, as an energy carrier or reducing agent. Low-emission hydrogen may contribute to fertilizer production, refining transformations, steelmaking and other difficult industrial uses. Its usefulness depends on the source of electricity or feedstock, conversion efficiency, transport distance, storage and final application. Producing hydrogen through electrolysis and later converting it back to electricity incurs substantial losses. This makes indiscriminate hydrogen substitution economically doubtful. Direct electrification is often preferable where mature electric technology can efficiently provide the same service. Hydrogen can be more defensible where high-temperature chemical processes or specialized feedstocks require molecules rather than electrons. Industrial customers need not only hydrogen production facilities but storage, pipelines or other delivery systems, certification and commercially viable long-term contracts. For Brazil, potential renewable electricity and existing chemical industries create opportunities, but an export strategy must account for competition, logistics and financing. Announced production capacity is not the same as contracts or operational output. The test of a hydrogen project is whether identifiable customers can pay its delivered cost and whether the resulting emissions reduction is credible. ## 21. Nuclear energy: firm capacity, cost and governance Nuclear generation can produce large quantities of low-carbon electricity and provide relatively stable output, characteristics that can support an electrified system with growing variable renewables. Its economics are sensitive to construction duration, project management, safety obligations, cost of capital and the treatment of radioactive waste. A reactor completed substantially later than planned can impose important financing costs even if its lifetime operating performance is strong. Countries differ in engineering capacity, supply-chain experience, regulatory structure and public trust. Repeated construction of standardized designs may improve outcomes, while interrupted programmes can lose specialized skills. Operational safety requires an independent regulator, emergency preparedness and continuing oversight. These institutional conditions are part of the technology's total cost, not optional additions. Nuclear energy should therefore be compared with other system configurations rather than with standalone solar or wind LCOE alone. It may supply firm power and reduce fossil dispatch in some locations; elsewhere, network constraints, financing or construction risks may favor different combinations. No single technology resolves every security, affordability and emissions objective simultaneously. ## 22. Energy efficiency and unmet demand Efficiency changes the relation between energy input and useful services. Better insulation, efficient motors, modern appliances, industrial process control and optimized transport networks can lower operating costs and emissions. Yet adoption is affected by income, access to credit, landlord-tenant incentives and information. A higher upfront purchase price can prevent households from buying a product that would save money over its lifetime. Standards, labeling, public procurement and targeted finance can address some barriers. Their success should be measured in operational outcomes, not merely installed equipment counts. Rebound effects also matter: when a service becomes cheaper, its use may increase. The resulting welfare gain can coexist with a smaller-than-expected reduction in aggregate energy demand. In 2024, approximately 655 million people worldwide still lacked access to electricity, according to the World Bank's 2026 reporting on global energy access. That shortfall illustrates why low-carbon policy and energy development cannot be reduced to suppressing aggregate demand. [9] Countries with large unmet demand should not aim at deprivation. Reliable electricity for refrigeration, sanitation, hospitals, schools and productive activities can increase social welfare. The relevant policy objective is to make access cleaner and more efficient as it expands. Using national consumption reductions as the only benchmark can obscure unacceptable energy poverty. ## 23. Artificial intelligence, data centres and electricity demand Artificial intelligence introduces a form of electricity demand centered on data centres, computing accelerators, cooling systems and communications networks. These facilities often need high availability and rapid network access. The IEA estimated data-centre electricity use at approximately 415 TWh in 2024 and projected consumption near 945 TWh by 2030 under a central scenario published in 2025, with later updates giving a similar order of magnitude around 950 TWh. These are forecasts conditional on computing efficiency, workload, investment and utilization. [7] Data-centre companies can contract renewable generation or invest in dedicated energy facilities, yet an annual purchase agreement does not prove carbon-free supply in every hour of operation. Network congestion and project commissioning may constrain real availability. Competition for transformers, land and interconnection can also delay projects even when servers have been purchased. AI may help forecast demand, inspect equipment and improve industrial operations. It may simultaneously create new energy consumption. The net effect must compare measurable efficiency gains with induced demand. Neither an inevitable climate benefit nor an inevitable failure of decarbonization follows from the technology's existence alone. ## 24. Carbon pricing, subsidies and household incidence Carbon taxes and emissions-trading systems attempt to make emitters face some of the social cost of pollution. By changing relative prices, they can encourage cleaner fuels, efficient equipment and low-carbon processes. Their effects depend on sector coverage, credible measurement, enforcement and the availability of practical substitutes. Without accessible alternatives, higher energy costs may primarily burden households rather than rapidly change consumption technology. Distributional effects differ by geography and income. A worker dependent on a distant commute cannot instantly replace a vehicle or relocate. Revenue recycling, targeted transfers, public transport investment and home-efficiency programmes can reduce adverse effects. Conversely, untargeted subsidies for expensive equipment may concentrate benefits among affluent consumers. Industrial subsidies require equivalent scrutiny. Concessional lending or tariffs can encourage domestic capability, but they can also preserve inefficient suppliers. Measurable objectives, competitive procurement and review of outcomes help distinguish productive coordination from transfers to organized interests. Public spending and regulatory protection should be evaluated according to what additional capacity, learning or emissions reduction they actually cause. ## 25. Three economic pathways toward 2040 In a high-coordination pathway, transmission expands alongside low-carbon generation, storage becomes more competitive, and consumers replace combustion equipment at a sustained pace. Long-term contracts and reliable regulation lower investment risks. Emissions fall as operating fossil facilities lose utilization and eventually retire. Progress remains uneven by sector, but the installed system shifts as well as the market for new equipment. In an infrastructure-constrained pathway, renewable generation continues appearing inexpensive in equipment comparisons while projects encounter prolonged connection queues and curtailment. Public and private balance sheets bear rising costs, industrial electrification slows and households remain exposed to volatile fuel expenditure. Technological progress alone cannot overcome organizational and network failures. In a fragmented geopolitical pathway, governments restrict mineral exports, subsidize national manufacturing and prioritize security over lowest-cost procurement. Redundant supply chains may improve resilience but increase near-term prices. Countries with weak access to capital find projects more difficult to finance. These are conditional mechanisms, not forecasts assigned precise probabilities, and different regions may experience them simultaneously. ## 26. Indicators for tracking the actual transformation Installed generation capacity is an incomplete metric of structural transition. Electricity produced, final-energy consumption, fuel imports, industrial equipment replacement and absolute emissions are necessary complements. Carbon intensity measures emissions per unit of economic activity or output; absolute emissions reveal the climatic effect of total activity. Both should be observed without confusing them. The power system requires operational indicators: transmission commissioned, transformer availability, connection times, curtailment rates, storage discharge duration, reliability performance and regional price differences. Industrial transition requires evidence of new electric machinery operating, reduced fossil fuel use per tonne of output and profitable low-emission product markets. Vehicle sales are less informative than fleet turnover and actual fuel consumption. Financial indicators need to distinguish investment announcements, signed contracts, funds raised, completed construction and cash collected. Borrowing costs, lease obligations and currency mismatch can alter viability. Distributional indicators should track household energy burden, employment losses and gains, compensation and the quality of service. Together these observations reveal whether technology is changing productive structures rather than merely attracting capital and publicity. ## 27. The enduring struggle over infrastructure and distribution The transition reallocates economic influence because it changes the assets required to produce and consume energy. Renewable additions in 2025 confirm that low-carbon equipment has reached substantial industrial scale. Continued growth in emissions confirms that expanding demand and existing fossil infrastructure still shape the global outcome. Between the two lies the challenge of coordinating physical networks, investment, regulation and social acceptance. The benefits and costs will not be evenly distributed. Countries able to finance grids, manage territorial disputes and develop manufacturing capability may capture important industrial opportunities. Countries dependent on expensive imports or unstable borrowing conditions face sharper constraints. Within each country, consumers, workers, resource owners and taxpayers experience different effects. Brazil's comparatively renewable electricity offers a starting advantage, but transport, industry, system reliability and the fair allocation of costs determine the broader outcome. A durable transition is therefore an institutional and productive transformation rather than a competition to declare a single winning technology. Its success rests on reliable and affordable energy services, falling absolute emissions and transparent management of economic losses as well as gains. ## Structured evidence | Indicator | Period | Value | Interpretation | |---|---|---:|---| | Global renewable power capacity added | 2025 | 692 GW | New installed capacity, not energy delivered | | Global renewable power capacity at year-end | 2025 | 5,149 GW | Accumulated installed capacity | | Renewable share of global new additions | 2025 | 85.6% | Denominator: new capacity | | Global energy-related CO₂ emissions | 2025 | approximately 38.4 Gt | Annual emissions estimate | | Renewable share of Brazilian electricity | 2025 | 86.8% | Domestic electricity supply | | Renewable share of Brazilian total energy | 2025 | 49.4% | All forms of energy supply | ```chart type: bar title: Renewable share of the Brazilian electricity mix unit: % of domestic electricity supply 2024 | 88.2 2025 | 86.8 ``` ```flow Competitive new technologies → finance and permits → electricity connections and infrastructure → replacement of end-use equipment → lower emissions per service → changes in public revenue, employment and relative prices Growing demand → higher use of existing fossil assets → persistent emissions despite renewable additions ``` ```map title: Economic geography of the energy transition China | Large-scale manufacturing and industrial processing | Leadership in new technologies coexists with coal consumption Europe | Climate regulation and energy-intensive manufacturing | Exposure to energy costs and imports United States | Innovation, finance and industrial policy | Regulatory and geographical differences Brazil | High renewable electricity share and natural resources | Grid, industrial and non-electric-use constraints ``` ```chart type: bar title: Global renewable additions, IRENA 2025 unit: % of newly added global power capacity Renewables | 85.6 Other sources | 14.4 ``` ## References [1] IRENA, *Renewable Capacity Statistics 2026*, 1 April 2026: https://www.irena.org/News/pressreleases/2026/Apr/Near-700-GW-Surge-in-2025-Proves-Renewable-Energy-Resilience [2] IEA, *Global Energy Review 2026*, 20 April 2026, emissions chapter: https://www.iea.org/reports/global-energy-review-2026/co2-emissions [3] EPE/MME, *National Energy Balance 2026*, base year 2025: https://www.epe.gov.br/sites-pt/publicacoes-dados-abertos/publicacoes/PublicacoesArquivos/publicacao-975/topico-847/BEN_S%C3%ADntese_2026_PT.pdf [4] IRENA, *Renewable Power Generation Costs in 2024*: https://www.irena.org/Publications/2025/Jun/Renewable-Power-Generation-Costs-in-2024 [5] IEA, *World Energy Outlook 2025*: https://www.iea.org/reports/world-energy-outlook-2025/overview-and-key-findings [6] IEA, *Global Critical Minerals Outlook 2025*: https://www.iea.org/reports/global-critical-minerals-outlook-2025 [7] IEA, *Energy and AI*, 2025, and subsequent updates: https://www.iea.org/reports/energy-and-ai/energy-demand-from-aI ; https://www.iea.org/reports/key-questions-on-energy-and-ai/executive-summary [8] IEA, *World Energy Investment 2026*: https://www.iea.org/reports/world-energy-investment-2026 [9] World Bank, *655 Million People Still Without Electricity Underscore Urgent Need to Deliver Universal Energy Access*, June 2026: https://www.worldbank.org/en/news/press-release/2026/06/16/accelerating-universal-energy-access