Clean Electricity Covered Just 40% of Global Energy Demand Growth in 2025, ETC Finds

Global clean energy investment reached a record $2.1 trillion in 2025, with renewables supplying 99 percent of the growth in global electricity generation, according to the Energy Transitions Commission's Energy Transition Monitor 2026. Yet because electricity remains only a fifth of total final energy use, that clean electricity growth covered just 40 percent of the overall rise in global energy demand, with fossil fuels supplying the remainder as demand from buildings, heavy industry and long-distance transport continued rising. The world has already breached 1.5°C of global heating and remains on track for around 2.5°C.

 

Why the "Progress Paradox" Reflects a Genuine Mathematical Tension

 

The report describes what it calls a "progress paradox": clean electricity is growing more than twice the speed of overall energy supply, yet emissions are not falling because overall demand for both fossil and clean energy is expanding simultaneously, driven by data centres, higher cooling needs and heavy industry. That framing captures a genuine mathematical tension rather than a contradiction in the underlying data: a technology can grow rapidly in percentage terms while still failing to reduce absolute emissions if the total pool of energy demand it needs to displace is growing at a comparable or faster pace.

That distinction matters because headline figures about renewable growth rates, however impressive in isolation, can obscure whether clean energy is actually displacing fossil fuel use or simply adding new capacity alongside continued fossil fuel expansion. ETC Co-Chair Adair Turner stated plainly that "clean energy is now outpacing fossil growth, but deployment speed alone won't cut emissions," directly addressing this distinction between growth rate and absolute displacement.

 

Why the "Two-Speed Transition" Framing Matters for Prioritising Policy Attention

 

The report divides global emissions into two distinct categories requiring fundamentally different interventions. Around 60 percent of global emissions, primarily from power generation and road transport, could be abated through clean electrification alone at little or no extra cost, since these sectors already have commercially mature, cost-competitive clean alternatives available. The remaining 40 percent, covering high-temperature industrial heat, aviation, shipping and parts of agriculture, requires solutions that either carry a green cost premium or remain at early commercial scale stages.

That distinction matters for policy design because it suggests the barriers facing each category are genuinely different in kind: the first category's primary obstacle is deployment speed and infrastructure bottlenecks rather than technology cost or availability, while the second category faces a more fundamental commercial viability gap requiring either cost breakthroughs or demand-side mechanisms like offtake commitments and carbon pricing to become commercially attractive at scale. Of roughly 1,000 clean industrial projects announced globally, the report notes fewer than 20 percent have reached a final investment decision, illustrating how far this second category remains from the kind of mature, bankable project pipeline the first category has already achieved.

 

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Why Grid Bottlenecks Represent the Binding Constraint on the "Easy" 60%

 

Even within the more straightforward electrification-driven emissions category, the report identifies grid capacity as a major bottleneck slowing what should otherwise be accelerating progress. Approximately 375 gigawatts of renewables and 455 gigawatts of battery storage are stuck in European connection and permitting queues, roughly 2,300 gigawatts await grid connection in the United States, and nearly 10 percent of China's wind and solar output was curtailed due to grid constraints in the first half of 2026.

That scale of stalled or wasted capacity, particularly the US figure of 2,300 gigawatts awaiting connection, a volume considerably exceeding current total US generation capacity, suggests the primary constraint on faster decarbonisation in the sectors where clean technology is already cost-competitive is not a lack of investor or developer interest, but genuine physical and administrative infrastructure limitations preventing already-available clean capacity from actually reaching the grid and displacing fossil generation.

 

Why the Four Unaddressed Levers Represent a Distinct Category of Failure

 

Beyond the electrification-versus-hard-to-abate framing, the report identifies four levers it describes as remaining largely unaddressed: coal use, methane emissions, deforestation, and the slow scale-up of carbon removals. ETC Co-Chair Jules Kortenhorst stated directly that "coal is not phasing down, methane emissions are not falling, forests are still being cut down, and carbon removal is nowhere near the scale required."

That these four levers sit outside both the "easy electrification" and "hard-to-abate industrial" framing suggests they represent a distinct category of challenge, not primarily technological or cost barriers, but issues requiring different forms of intervention: coal phase-down and deforestation reduction are largely political and regulatory challenges rather than technology gaps, methane reduction often depends on operational and monitoring improvements within existing fossil fuel infrastructure, and carbon removal scale-up faces its own distinct commercialisation challenges separate from renewable electricity deployment.

 

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Why the Regional Breakdown Reveals Genuinely Different Structural Barriers

 

The report's country and regional data illustrate that the transition's obstacles vary considerably by market rather than reflecting a single global pattern. China supplies 83 percent of the world's renewable energy equipment and 45 percent of clean industrial plant equipment, installing more than half the world's wind and solar capacity, with 56 percent of new passenger vehicle sales being electric in 2025, reflecting a market where manufacturing capacity, deployment speed and consumer adoption are all advancing simultaneously.

The United States presents what the report describes as a genuine contradiction: since January 2025, 21 gigawatts of clean energy capacity have been cancelled and fossil capacity additions surged 71 percent, yet renewable growth slowed by only 2 percent, suggesting federal policy shifts have measurably affected the pace of change without derailing the underlying market momentum entirely. Data centres represent the sharpest expression of this contradiction, accounting for half of all new clean energy contracts while simultaneously driving the largest increase in new fossil fuel power capacity, illustrating how a single demand driver can push in both directions of the energy mix at once depending on which specific facilities and contracts are examined.

India presents yet another distinct pattern: despite having the world's cheapest renewables, the country installs new capacity nine times slower than China, and its fastest-in-class electricity demand growth of 6.4 percent annually means new clean capacity is being absorbed by rising demand rather than displacing existing coal generation, a structurally different problem from the US or European experience, where the primary bottleneck is grid connection rather than the pace of demand growth outstripping new supply.

 

What RMI's Framing Adds About the Path Forward

 

RMI chief executive Jon Creyts, whose organisation is a member of the Energy Transitions Commission, framed the core challenge as no longer being "whether clean energy technologies can scale, but whether we can deploy them fast enough to meet growing demand and reduce emissions simultaneously." He specifically pointed to combining clean electrification with efficiency, flexibility and modernised grids as the pathway to strengthening energy security while accelerating emissions reductions without constraining economic growth, framing the report's identified permitting and grid connection barriers as the primary obstacles standing between currently available clean technology and the emissions reductions that technology could otherwise already be delivering.