Flex›Power Purchase Agreement

Power Purchase Agreement

A Power Purchase Agreement (PPA) is a bilateral long-term electricity supply contract between a renewable energy producer and a buyer (offtaker), establishing the price, quantity, duration, and risk allocation for electricity sales outside the standard short-term spot market.

Regulation (EU) 2024/1747, Art. 2(77) defines a PPA as:

“A contract under which a natural or legal person agrees to purchase electricity from an electricity producer on a market basis.”

This is the first EU-level legal definition of PPA, introduced as part of the Electricity Market Design Reform 2024. It is deliberately broad — covering corporate PPAs, merchant PPAs, physical and virtual structures.

Why PPAs exist

PPAs serve different interests for each party:

For generators: renewable projects have high capital costs (CAPEX) and negligible operating costs (OPEX). Revenue is entirely dependent on electricity prices — which are volatile. A long-term PPA provides revenue certainty that:

  • Enables debt financing (banks typically require a PPA from a creditworthy offtaker as a project financing condition)
  • Allows economic operation after subsidy schemes expire (post-subsidy merchant risk)
  • Transfers some price risk to the offtaker

For buyers: large consumers (industries, data centers) use PPAs to:

  • Hedge against electricity price volatility — 12–42% bill reduction possible with flexible retail contracts (AEAP, COM/2025/79)
  • Demonstrate renewable electricity procurement for sustainability commitments
  • Secure competitive electricity prices for industrial processes

PPA typology

By buyer

TypeDescriptionNotes
Corporate PPAGenerator → large consumer directlyPrice certainty for both parties; Guarantees of Origin typically transferred
Merchant PPAGenerator → electricity traderTrader may resell on exchange or to end consumers

By delivery mechanism

TypePhysical deliveryGrid involvementKey characteristics
On-site PPADirect, behind meterNoneProducer on customer premises; avoids grid costs; always Corporate; plant sized to customer profile
Off-site PPAVia public gridBalance group settlementFixed price; plant can be geographically remote; Guarantees of Origin transferred
Sleeved PPAOff-site with intermediaryYesIntermediary (e.g., Next Kraftwerke) handles balancing, portfolio, and risk management; more accessible for smaller parties
Virtual/synthetic PPAFinancial only — no physical deliveryElectricity sold separately at marketUses a CfD structure: both parties settle at market price and a Contract for Difference adjusts to the agreed strike price

Virtual PPA mechanism in detail

The synthetic PPA decouples electricity flow from the financial agreement:

  1. Generator’s energy service provider sells electricity at market (spot) price (e.g., EPEX)
  2. Consumer’s supplier buys a matching profile at market price
  3. A Contract for Difference between the PPA parties pays/receives the difference between spot and the agreed strike price

Result: both parties effectively achieve the agreed PPA strike price regardless of spot price movements. Simpler administratively than physical off-site PPAs — suitable when neither party wants to manage balance group connections.

Note: this CfD structure in corporate PPAs is distinct from the two-way CfDs under Art. 19d of Regulation 2024/1747, which are public-support instruments for new renewable investment.

Advantages and disadvantages

AspectAdvantagesDisadvantages
Risk managementRemoves energy price volatility for both partiesLong-term lock-in (10–15 years) — adverse if prices move significantly
FinancingEnables project debt financing; lenders accept creditworthy PPA as securityComplex contracts — primarily accessible to large companies
SustainabilityPhysical PPAs with Guarantees of Origin enable verified green procurementVolume/profile risk: variable renewable output may not match contracted profile
FlexibilityHighly customizable contract structuresRequires skilled legal and commercial counterparties

EU policy framework (Electricity Market Design Reform 2024)

Art. 19a — Obligation to promote PPAs

Member states must:

  • Remove unjustified barriers to PPA uptake
  • Ensure instruments are available to reduce buyer-default financial risk (e.g., state-backed guarantee schemes at market prices) and are accessible to customers facing PPA entry barriers
  • Allow support schemes for renewables to reserve a share of output for PPAs (i.e., allowing subsidised projects to also enter PPAs)

Art. 19b — PPA templates

ACER must assess (by 17 October 2024) whether voluntary PPA templates would facilitate market development, and develop them if appropriate. This reduces transaction costs, particularly for smaller buyers.

ACER annual assessment

ACER must publish an annual PPA market assessment covering: uptake, barriers, prices, and cross-border dimensions.

Art. 18a (Directive 2024/1711) — Supplier hedging

Regulatory authorities must ensure suppliers have appropriate hedging strategies when offering fixed-price contracts. These strategies may include PPAs. Where PPA markets are sufficiently developed, member states may require suppliers to cover a share of their fixed-price exposure through renewable PPAs.

PPA market context

Corporate PPAs are growing internationally, particularly for technology companies seeking to power data centers with renewable energy. Well-known examples include Google/Apple renewable contracts and Google-Engie offshore wind PPA in Belgium. Growth is driven by:

  • Corporate net-zero commitments requiring verified renewable electricity
  • End of subsidy regimes for early renewable projects (post-2010 wind/solar now post-subsidy)
  • Art. 19a EU mandate requiring member states to actively remove barriers

Key barriers remain:

  • Creditworthiness requirements: sellers prefer large, creditworthy buyers — SMEs and municipalities face barriers (addressed by Art. 19a guarantee scheme requirement)
  • Long-duration risk: 10–15 year PPAs require buyers with stable long-term operations
  • Legal/commercial complexity: negotiation costs make PPAs primarily accessible to larger organisations

Swedish and Nordic context

PPAs are commercially established in the Nordics, particularly for offshore wind projects. The Nordic electricity market’s existing price structures (SE1–SE4 bidding zones, Nord Pool spot) provide the market price reference against which PPA strike prices are set. Nordic PPAs are predominantly physical off-site or sleeved structures due to the developed balance market infrastructure.

Sweden has not yet implemented the Art. 19a guarantee scheme requirement; this is expected as part of the Directive 2024/1711 transposition process (general deadline 17 January 2025; implementation monitoring ongoing).

Relationship to two-way CfDs

The EU’s mandatory two-way CfDs for new public support (Art. 19d, Regulation 2024/1747) share the CfD financial structure with virtual/synthetic PPAs but are distinct instruments:

  • Two-way CfDs are public support instruments — the counterpart is typically a government entity
  • Private PPAs are market-based bilateral contracts — no public support involved
  • A project can receive public support via a two-way CfD and separately enter a PPA for a portion of its output

As connection condition in anvisningssystem

Svenska kraftnät‘s April 2026 government assignment report (Dnr 2025/5008) proposes that PPAs — or binding agreements with equivalent content — may serve as verification instruments within the proposed Anvisningssystem connection allocation mechanism. (Source - Svk Anslutningsprocessen Rapport (2026))

The context: Svk is investigating whether new large-scale electricity users (particularly data centers and similar fast-establishing, price-insensitive industries) should be required to arrange supply of new fossil-free production as a condition of receiving transmission grid connection. The concern is that these customer categories can establish in months while fossil-free generation typically takes years to permit and build — creating a structural energy deficit risk.

If such requirements are introduced, a PPA (or equivalent agreement) would provide the binding evidence that the connection condition is met. The relevant PPA content for this purpose would need to demonstrate:

  • Additionality: the production is genuinely new, not already committed regardless of the PPA
  • Geographic proximity: production is located close enough to the consumption connection point to reduce transmission expansion needs
  • Temporal matching: production profile aligns with the consumption profile, particularly during high-load periods
  • Balancing: the matched production reduces the system’s net need for frequency balancing resources

Svk notes that the requirement to demonstrate such commitments would not in itself create a significant additional burden — parties would need these commercial agreements in any case to operate their facilities. However, business confidentiality aspects of how commitments are documented and verified are unresolved.

This is a structural novelty: PPAs used not primarily for revenue stability or renewable certification (their conventional purposes) but as a grid access condition embedded in the connection allocation process. The legal and economic feasibility of this requirement is still under analysis.

BESS-backed profile risk management — next-gen PPAs

Traditional PPAs fall into two problematic categories: baseload PPAs (seller guarantees a flat profile, bears ramp and curtailment cost) and pay-as-produced PPAs (buyer takes all profile risk — intermittent delivery, no value when prices are negative). Both limit scalability.

Flower (energy tech company) has proposed a third structure: the aggregator-as-offtaker uses a large BESS portfolio and AI optimization to manage the profile risk itself, transforming variable renewable output into a stable, predictable supply product. In April 2025, Flower signed a physical pay-as-produced PPA with Locus Energy (SEB Nordic Energy portfolio company) for 180 GWh/year from 11 onshore wind farms across SE2/SE3/SE4, then uses its BESS to smooth the output. The framing: “next-generation PPAs” where the offtaker bears profile risk — enabling longer contract durations and more bankable cash flows for wind developers than traditional structures allow. (Source - Flower Website (2024-2026))

This structure is commercially novel in Sweden and, if it scales, could provide a new financing pathway for wind development that bypasses the limitations of both baseload and pay-as-produced PPAs. Verification of the claim that BESS can genuinely de-risk renewable intermittency at portfolio scale (rather than just shifting it in time) is open.