Big Tech Still Loves Wind and Solar – but It's Getting Complicated

Why It Matters

The shift toward mixed‑fuel strategies reveals a tension between AI growth and climate commitments, reshaping how the tech sector sources power and influencing renewable market dynamics.

Key Takeaways

• Big tech accounts for 49% of global clean‑power PPAs in 2025.
• Microsoft may drop 100% hourly carbon‑free target amid AI demand.
• Data centre electricity demand to double by 2030, 40% met by gas/coal.
• Google, Meta, Amazon diversify with gas, nuclear, and on‑site renewables.
• PPA volume fell to 55.9 GW in 2025, first decline in decade.

Pulse Analysis

The AI boom has turned data centres into the fastest‑growing electricity consumers, prompting hyperscalers to double down on renewable procurement. In 2025, tech giants secured nearly half of all corporate clean‑power PPAs, driving record‑high volumes of wind, solar, and battery contracts. Yet BloombergNEF reports a modest contraction in total PPA volume to 55.9 GW, the first dip in a decade, as companies grapple with the need for reliable, on‑demand power that intermittent renewables alone cannot guarantee.

Hourly carbon‑free targets, championed by firms like Google, are now under pressure. Microsoft’s internal debate over its 100% clean‑energy pledge underscores the operational challenge of matching AI‑intensive workloads with variable renewable output. Storage solutions, typically four‑hour batteries, fall short of the continuous power profile of modern data centres, leading firms to secure natural‑gas plants, nuclear PPAs, and on‑site generation. Regional cost differentials accentuate this trend: North America’s abundant, cheap gas makes it an attractive bridge, while Europe’s higher gas prices push companies toward Nordic locations or longer‑term nuclear contracts.

The evolving mix of clean and firm power sources has broader market implications. Investors may see renewed interest in flexible generation assets and next‑generation storage technologies, while renewable developers must adapt to hybrid procurement models. Policy makers face a delicate balance: encouraging decarbonisation without stifling the rapid expansion of AI infrastructure. Ultimately, the sector’s ability to integrate diverse energy portfolios will determine whether the tech industry can sustain its growth trajectory while honoring climate pledges.