The energy blog for data centers
PPAs, electricity surplus, European grid, AI demand: our analysis to understand and anticipate the market.
- AIData centers
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.
8 July 2026 11 min - AIData centers
Energy-Aware AI: the 2026 playbook to power European AI without saturating the grid
How European AI data centers can secure low-carbon power in weeks, not years, by combining renewable surplus, hourly matching and producer mapping. Structured for search engines, AI assistants and energy buyers.
10 June 2026 16 min - SurplusData centers
Electricity surplus for data centers in Europe: the market about to redefine digital energy access
100 TWh today, 236 TWh by 2035: why European renewable surplus is the natural answer to data center energy hunger, and how Voltarione connects the two directly.
6 June 2026 12 min - PPAEnergy
PPA (Power Purchase Agreement): the complete 2026 guide
Everything about long-term electricity purchase contracts between producers and data centers: structure, pricing, duration and risks.
12 May 2026 8 min - Data centersEurope
Electricity surplus in Europe: the opportunity for data centers
Europe wastes more than 80 TWh of renewable electricity every year for lack of local buyers. Here is why data centers are the answer.
22 May 2026 7 min - Green PPAESG
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.
30 April 2026 6 min - AIHyperscalers
AI data center energy demand: where we really stand in 2026
GPT, Gemini, Claude and large-scale inference: the raw numbers on AI consumption and how to keep up.
18 March 2026 7 min - GridRTE
RTE, TenneT, Amprion: how cross-border electricity flows work in Europe
Inside the European market coupling mechanism, interconnections and their impact on the price your data center actually pays.
14 February 2026 6 min - ProducersSell
How to sell your electricity surplus as a producer in 2026
Solar, wind or hydro producer: 5 concrete steps to monetise a surplus with an industrial or data-center buyer.
20 January 2026 5 min - PPAvPPA
Virtual PPA vs Physical PPA: the complete 2026 comparison
Which PPA structure should a European data center pick? Legal, accounting, tax and risk differences explained.
30 May 2026 7 min - PPAEurope
Top 10 PPA providers in Europe in 2026
Pexapark, LevelTen, Renewabl, FlexiDAO, 3Degrees, Voltarione… the complete European PPA marketplace landscape and how to choose.
28 May 2026 8 min - CurtailmentEurope
Renewable curtailment in Europe: 80 TWh wasted, who pays?
A data-driven dive into Europe's silent scandal: 80 TWh of green energy curtailed every year — and who actually pays the bill.
15 May 2026 6 min - HyperscalersAWS
Hyperscaler PPA strategy: AWS, Google, Microsoft, Meta in 2026
Comparative analysis of the 4 cloud giants' energy procurement strategies — volumes signed, target geographies, 24/7 CFE goals.
18 April 2026 7 min - Data centersCost
Data center electricity cost: PUE, contract and tax breakdown
75% of an AI data center's OPEX is electricity. Here are the 5 components of the price paid and how each one is negotiated.
5 April 2026 6 min - SpainSolar
Spain solar surplus 2026: the Andalusia opportunity
12 TWh/year of Andalusian solar are looking for buyers. Why Spain has become the European eldorado of data-center PPAs.
25 March 2026 6 min - Site selectionEurope
Best European countries for data center site selection in 2026
Spain, Germany, France, Ireland, Nordics: energy price, climate, tax, latency comparison to pick the right country.
8 March 2026 8 min - 24/7 CFECarbon
24/7 Carbon-Free Energy: the new gold standard for hyperscalers
Beyond annualised 100% renewable, 24/7 CFE demands strict hourly coverage. Mechanics, cost and feasibility explained.
22 February 2026 7 min - AutoconsommationCollective
Collective self-consumption: how data centers cluster around solar farms in 2026
The 2023 decree extended the perimeter to 20 km. Why 60% of new French data center projects evaluate collective self-consumption.
1 June 2026 9 min - Green data centerPUE
Green data center: the 2026 European ranking of the most virtuous operators
PUE, WUE, CFE score, % renewable PPA: the full ranking of Europe's 25 biggest operators — and who really owns the top 5.
28 May 2026 8 min - ColocationPricing
Colocation data center: per-kW prices across Europe in 2026
Frankfurt, London, Amsterdam, Paris, Madrid: what does 1 kW of premium colocation really cost in 2026? Full benchmark.
20 May 2026 7 min - ReventeSurplus
Reselling electricity: producer guide to monetising surplus in 2026
Feed-in tariff, spot price, direct PPA: how a solar or wind producer chooses where to sell surplus in 2026.
15 May 2026 6 min - PPA solairePricing
Solar PPA: European price evolution and 2030 outlook
Spain €45/MWh, France €62/MWh, Germany €71/MWh: why gaps widen and where to sign in 2026 to optimise 15 years of TCO.
10 May 2026 7 min - AIData centers
AI Data Center Energy Consumption and Grid Impact in 2026
A GPT-5 cluster draws as much as a city of 80,000 people. Hard data on AI demand (IEA, EPRI) and why sourcing renewable surplus is the only sustainable answer to grid saturation.
5 June 2026 11 min