ACC News Brief
Clean Energy Global
Renewables are set to overtake coal as electricity demand accelerates
What happened
The International Energy Agency's Electricity Mid-Year Update 2026 projects global electricity demand growth of 3.6% in 2026 and 3.8% in 2027, driven by industry, air conditioning, electric vehicles, and data centers. The IEA says renewables are on track to overtake coal as the world's largest source of electricity in 2026, with solar generation alone growing by roughly 600 terawatt-hours that year. These are forecasts rather than guarantees; grid buildout, storage, fuel markets, and weather will shape the outcome.
Why it matters
Rising power demand can either slow emissions progress or speed investment in cleaner, more flexible grids. The projected renewable milestone matters most if utilities can connect new resources, move power across regions, and keep reliability and affordability in view.
What to watch
- Whether renewable generation actually surpasses coal during 2026 and stays ahead in 2027.
- How quickly transmission, storage, demand response, and other flexibility resources expand.
- Whether electricity-sector carbon dioxide emissions level off in 2027 as the IEA projects.
Sources & evidence
- Global electricity demand growth set to accelerate as power systems adjust to recent shocksInternational Energy Agency news release published July 23, 2026, summarizing the Electricity Mid-Year Update 2026.
- Electricity Mid-Year Update 2026: Executive summaryIEA executive summary with the report's demand, generation, and emissions projections.
Continue learning with ACC
Explore ACC's renewable energy and grid guide
