Episode Summary
Executive Summary: Ember’s 2026 Global Electricity Review shows a major turning point: fossil fuel generation fell globally in 2025 even as electricity demand grew normally, because solar, wind, and nuclear met essentially all new demand. Batteries are shifting from promise to practical system-shaper, especially in places like Australia, Chile, and India. The report argues this is structural, not a one-year anomaly, and that India and many sunny emerging economies are unlikely to follow China’s coal-heavy path.
Main Topics: Global renewables surge and fossil generation decline (Priority: 5/5): Solar and wind met almost all new electricity demand in 2025, with solar alone accounting for three-quarters of demand growth. Fossil generation fell slightly overall, a rare outcome outside recession or unusually mild weather years. Batteries move from theory to system impact (Priority: 5/5): Battery additions accelerated sharply and are now large enough in some markets to shift a meaningful share of daytime solar into evening demand, cutting curtailment and changing how grids operate. The plateau in fossil generation may be temporary (Priority: 4/5): Speakers argue the 2025 decline reflects a structural shift where clean power growth now matches demand growth. Short-term bumps may occur, but the long-run trajectory points downward for fossil generation. India as the key test case for a non-coal development path (Priority: 5/5): India’s demand growth, solar buildout, improving battery economics, and lower energy intensity suggest it will not replicate China’s coal-heavy rise; coal growth already slowed and fell in 2025. Emerging markets and distributed solar booms (Priority: 4/5): Countries like Pakistan, Nigeria, South Africa, Brazil, and others are adopting solar quickly, often driven by high grid prices, fuel insecurity, and the ease of distributed deployment. Sunny countries are still lagging despite high solar potential (Priority: 4/5): The report highlights that the remaining high-fossil-growth countries are often extremely sunny, implying a large untapped opportunity and suggesting economics and policy, not resource scarcity, are the main barriers. Geopolitics and fossil price volatility strengthen the clean-energy case (Priority: 3/5): Recent fossil fuel price shocks and wars are making domestic solar, wind, and storage more attractive because they reduce exposure to volatile global coal, gas, and LNG markets.
Key Arguments: Wind and solar met 99% of global electricity demand growth in 2025, showing clean power can now absorb nearly all new demand. Solar is no longer just growing in percentage terms; it added 636 TWh in 2025, far more than wind, nuclear, or gas. Global fossil generation fell by 0.2% despite normal demand growth, indicating a structural shift rather than a recession-driven anomaly. Battery deployment is catching up to solar growth and can now shift meaningful shares of new solar output into evening hours, reducing curtailment and extending solar’s value. Chile and Australia demonstrate that batteries can already capture more than half of new solar growth for nighttime use, proving the concept in real systems. India’s lower electricity intensity, cheap solar and batteries, domestic manufacturing push, and large project pipeline make a China-style coal explosion unlikely. Emerging economies are often leapfrogging directly to distributed solar because it is faster, cheaper, and less exposed to fuel supply risk than fossil generation. The remaining global fossil-growth holdouts are relatively few; most countries with growing demand are now meeting that growth mostly or entirely with clean power. Energy transitions are not just “additions” at the global level: in multiple countries, clean electricity is visibly substituting for fossil generation. High fossil-fuel prices and geopolitical uncertainty are accelerating the shift toward domestically produced clean electricity because it lowers exposure to import shocks.
Data Points: Global fossil generation change in 2025: -0.2% - Worldwide fossil electricity generation declined for the first time in a non-recession, non-mild-weather context. Global electricity demand growth in 2025: 2.8% - Demand growth was described as normal and close to the 10-year average. 10-year average demand growth: 2.7% - Used to show 2025 demand growth was not unusually weak. Solar generation added in 2025: 636 TWh - Absolute solar generation growth in 2025. Wind generation added in 2025: 205 TWh - Second-largest source of growth after solar. Nuclear generation increase in 2025: 35 TWh - Comparable to gas growth and far below solar growth. Gas generation increase in 2025: 36 TWh - Roughly equal to nuclear growth. Coal generation change in 2025: -63 TWh - Coal declined globally, helping drive the fossil generation drop. Solar share of global demand growth: 75% - Solar provided three-quarters of all new electricity demand in 2025. Wind and solar combined share of demand growth: 99% - Nearly all global demand growth was met by renewables. Solar growth rate in 2025: 30% - Highest percentage growth rate for solar in eight years. Global solar share of electricity: 8.7% - Solar’s share of total global electricity generation in 2025. Peak monthly global solar share: 11% - Highest monthly average solar share in 2025. Midday global electricity met by solar at peak month: 25% - Solar met a quarter of midday electricity globally in the highest-solar month. Battery additions in 2025: 250 GWh - New battery capacity added globally in 2025. Battery additions year-over-year growth: 45% - Battery capacity additions grew sharply from 2024 to 2025. Battery pack price: $70/kWh - Average battery pack prices fell substantially in 2025. Battery pack price decline: 45% - Year-over-year fall in battery pack prices. Solar in Chile captured by new batteries: 76% of new solar growth - Illustrates how batteries can shift most new solar to night in Chile. Solar in Australia captured by new batteries: 53% of new solar growth - Shows more than half of new solar growth can be shifted to evening in Australia. Global new solar shiftable by batteries: 14% - Of the new solar added globally in 2025, batteries could shift about 14% of the average daily increase to night. Chile curtailment avoided: 2 TWh - Estimated curtailment avoided by batteries in Chile. Top solar share country in 2025: Hungary, 27% annual solar share - Hungary led the world in annual solar share. Hungary midday solar in best month: Over 90% - In June, solar met over 90% of midday electricity in Hungary. Germany midday solar in best month: Over 60% - Example of very high midday solar penetration in a large system. India GDP per capita threshold: $10,000 - India crossed this level in 2025, similar to China 15 years earlier. India coal generation change in 2025: -2.9% - Coal generation fell in India for the first time in a while. India coal generation growth over last decade: 46% - Shows how notable the 2025 reversal is. India solar+battery theoretical LCOE: $56/MWh - From a separate Ember analysis on how cheaply India could meet demand with solar and batteries. India could meet with solar+batteries (theoretical): ~90% - Estimated in separate analysis referenced in the interview. China’s share of global solar panel production: >80% - Used to explain why Chinese exports are a useful indicator of future solar booms. Solar panel exports to Africa: 19 GW in 2025 - Up 48% from 2024, indicating growing African solar uptake. Egypt solar panel imports: 2.3 GW - About double its 2024 imports. Saudi Arabia solar capacity: >10 GW - Shows that even fossil-rich exporters are investing heavily in solar. Saudi Arabia renewables tendered in 2025: 15 GW - Signals rapid pivot toward clean energy in the Gulf. Countries meeting less than 50% of demand growth with clean power: About 25% of global demand growth - The remaining fossil-heavy holdouts account for only a quarter of global demand growth. U.S. solar and wind share of demand growth: Three quarters - Despite political headwinds, clean power still met most U.S. demand growth. Spain vs Italy wholesale prices: Italy sometimes >5x Spain - Illustrates how heavy renewables deployment lowers exposure to fossil price shocks. Indonesia solar target: 100 GW in 3 years - A major example of a country pivoting rapidly toward solar.
Pivotal Quotes: "wind and solar combined met 99% of demand growth around the world" — David Roberts: Framing the central takeaway that nearly all new global electricity demand was met by renewables. "We solved that" — David Roberts: A rhetorical summary of batteries addressing the main limitation of solar: nighttime supply. "the most likely scenario at the minute is that we'll have a few years with probably some smaller increases, some smaller falls in fossil generation, but overwhelmingly, we get towards 2030, 2035, the growth in clean power is going to be much larger than the growth in demand" — Nicholas Fulham: Explaining why the current plateau in fossil generation is likely temporary and will turn into decline.
Implications: Clean electricity is now winning on both cost and scale. Expect faster adoption of solar-plus-storage, more grid rewiring around midday-to-evening shifting, and rising economic pressure on fossil-heavy systems, especially in sunny emerging markets.