Solar hit 8.7% of global power in 2025, but fossil fuels still grew alongside it

Solar power generation grew 30% in 2025, supplying 8.7% of global electricity for the first time, according to the Energy Institute's 75th annual Statistical Review of World Energy, as reported by the Financial Times. It is a milestone that would have seemed distant a decade ago. But the same dataset tells a more complicated story for the enterprise energy buyers who have to act on it: fossil fuel demand also rose, and overall global energy consumption hit a record high.

Addition, not substitution

The central tension in the Energy Institute's data, analyzed by the Financial Times' Rachel Millard, is whether the world is undergoing an energy transition or an energy addition. Renewables are unambiguously growing fast. But they are not yet displacing oil, gas, or coal at the system level; they are sitting on top of a fossil fuel base that itself keeps expanding to meet surging demand.

Global energy demand hit record highs in 2025, according to the Financial Times' reading of the Statistical Review. That means every unit of clean power added this year has been absorbed by demand growth rather than crowding out an equivalent unit of carbon-intensive generation. For operations and procurement leaders building multi-year energy strategies, that distinction matters enormously.

S&P Global, which tracks energy transition commodity prices and market dynamics through its Commodity Insights division, frames the same dynamic through a market lens. The firm highlights that clean technology deployment and fossil fuel trading remain deeply intertwined in global commodity markets, with price signals from each affecting the other. Procurement teams relying on spot or index-linked contracts cannot treat the two markets as separate.

What record demand means for power market exposure

Record energy demand is not an abstract macro trend. The Financial Times noted that Britain's power markets were strained during a third heatwave in 2026, with elevated temperatures reducing the efficiency of both solar panels and gas-fired power stations simultaneously. In June, high river temperatures temporarily forced some French nuclear plants offline, cutting France's ability to export electricity across the Channel.

That kind of multi-system stress, where heat reduces supply from multiple generation types at once, is exactly the scenario that enterprise energy managers and data center operators need to stress-test in their resilience planning. Relying on any single source, whether solar, gas, or nuclear imports, carries compounding risk during extreme weather.

S&P Global's energy transition data and pricing services cover carbon markets, clean power certificates, hydrogen, and battery storage alongside conventional commodities, reflecting how interlinked these markets have become. Operators who lack visibility across both fossil and clean commodity price curves are running blind on a significant portion of their cost exposure.

Solar's growth rate is real, but the baseline effect still matters

A 30% annual growth rate in solar generation is striking. At 8.7% of global power, solar is no longer a niche technology. The Energy Institute data, as analyzed by the Financial Times, indicates that electrification is reaching what the organization describes as a tipping point, with regional paths diverging sharply. Some grids are integrating renewables at scale; others remain heavily fossil-dependent.

For procurement directors managing multi-site or multi-region energy portfolios, that regional divergence is the operational reality. A corporate renewable energy target set at the global level may be met on paper through a mix of power purchase agreements in high-solar markets and conventional supply contracts elsewhere. The net carbon position depends entirely on how the accounting is structured and which grid emission factors apply.

S&P Global's cleantech trends reporting for 2026 identifies this accounting complexity as a key pressure point, as more enterprises face scrutiny over the credibility of their energy transition claims. Market intelligence on both clean power certificate pricing and fossil fuel indices is increasingly table stakes for procurement and sustainability teams operating under disclosure frameworks.

What this means for your team

• Audit your regional energy mix now. The 30% solar growth figure masks wide variation across grids; your actual clean power exposure depends on where your facilities sit and which tariff structures apply.
• Stress-test supply contracts for high-demand scenarios. The 2026 heatwave events in Britain and France show how heat simultaneously compresses supply from solar, gas, and nuclear. Multi-source contingency contracts reduce single-point exposure.
• Get visibility across both clean and fossil commodity price curves. S&P Global's framing of the transition market makes clear these price signals interact; procurement teams that monitor only one side are missing half the cost picture.
• Revisit your carbon accounting methodology before the next disclosure cycle. If your renewable energy claims rely on certificates from markets geographically distant from your load, regulators and auditors are increasingly asking for grid-level substantiation.