Green PPA vs grey electricity: what really changes for a data center
Price, traceability, CSRD compliance and carbon impact compared between a renewable PPA and a classic market contract.
Carbon is no longer optional
Since CSRD took effect in 2024, any data center operating in Europe must report scope 2 emissions. A grey electricity contract (grid mix, ~250–400 gCO₂/kWh depending on country) immediately hurts the balance sheet.
Guarantees of origin vs physical PPA
- Guarantees of origin (GO) cost €1–3/MWh but the GHG Protocol challenges them for weak additionality.
- A physical PPA guarantees real additionality (the renewable project would not exist without the buyer) and is now required by major hyperscalers.
Price: the green premium myth
In 2026, a long-term solar PPA in Spain costs €52/MWh versus €78/MWh for Spanish baseload. Green is cheaper than grey, especially in surplus zones.
The 24/7 carbon-free trap
Google and Microsoft target 24/7 CFE (hour-by-hour Carbon-Free Energy). Achieving it requires a solar + wind + nuclear + storage PPA mix, calibrated against actual load curves. Voltarione models this mix across 8,760 hours/year.
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Corporate PPAs for data centers in Europe: the 2026 practical guide (types, pricing, clauses, countries)
PPA structures (on-site, off-site sleeved, virtual), country-by-country price ranges, clauses to negotiate and key markets: the practical 2026 guide to securing power for a European data center.
Nuclear PPAs for data centres: the 2026 European guide (SMR, baseload, pricing)
SMRs, baseload contracts, country-by-country pricing: the complete 2026 guide to nuclear PPAs for AI data centres in Europe. Nuclear vs renewables, the post-ARENH framework (CAPN/VNU), and the Microsoft, Amazon, Rolls-Royce and EDF cases.
How much electricity does an AI data center really consume? A 2026 European benchmark (MW, €/MWh, PPA)
A frontier AI training cluster now draws 100–300 MW continuously, inference already accounts for 80–90% of AI compute, and the all-in energy cost of a 100 MW campus ranges from €38–55M/year in the Nordics to €118–149M/year in Dublin. A data-heavy 2026 European benchmark.