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.
What is a PPA?
A Power Purchase Agreement (PPA) is a bilateral contract between an electricity producer and a buyer — typically a data center, industrial site or tech company — fixing price, volume and supply duration over 5 to 25 years.
The PPA has become the central instrument of the energy transition: it secures the producer's investment while locking in a stable, often decarbonised cost for the buyer.
The three main PPA families
- Physical PPA: electricity is physically delivered via the grid (RTE, TenneT, Amprion…).
- Virtual PPA (vPPA): a financial swap with no physical delivery, ideal for multi-site buyers.
- Sleeved PPA: an intermediary (utility) handles balancing and invoicing.
Pricing structure
Three mechanisms coexist: fixed price (most common for data centers), spot-indexed with floor/cap, or hybrid. In 2026 the average European solar PPA settles around €55–75/MWh, versus €70–95/MWh for onshore wind.
Why data centers care
Hyperscalers (AWS, Microsoft, Google, Meta) have signed more than 30 GW of cumulative PPAs since 2020. Three reasons: carbon neutrality, budget predictability against a volatile gas/nuclear mix, and ESG requirements from end customers.
How Voltarione streamlines matching
The platform maps available surpluses across Europe, computes in real time how a data center's load curve matches a production profile, and generates a pre-negotiated PPA term-sheet in days instead of months.
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