What is a virtual PPA and how do corporates use it?
A virtual PPA is a contract-for-differences that lets a company buy clean energy and RECs at scale without hosting an array. Credit, basis, and additionality decide whether it works.
Virtual power purchase agreements (VPPAs)—also called synthetic or financial PPAs—are a widely used structure for corporates buying clean energy at scale without hosting solar on their own facilities. For developers and investors, VPPAs open access to creditworthy offtakers; for buyers, they deliver additionality and sustainability reporting with geographic flexibility.
How does a virtual PPA work?
In a VPPA, a corporate buyer contracts for the output of an offsite solar project at a fixed or indexed price. The project sells power into the wholesale market; the buyer and seller settle the difference between the market price and the contract price. The buyer typically retains renewable energy certificates (RECs) or other environmental attributes, depending on structure.
The EPA treats RECs as the instrument that substantiates renewable electricity use claims on a shared grid—one certificate per megawatt-hour of renewable generation.
Key features:
- No on-site installation required at the buyer's facilities
- Additionality: new generation built because of the contract
- Geographic flexibility: buyer and project need not be in the same utility territory
Why do corporates buy clean energy with VPPAs?
Large enterprises with nationwide or multi-site footprints often cannot deploy enough rooftop solar to meet clean energy goals. VPPAs let them:
- Meet Scope 2 emissions reduction targets with verifiable REC retirement under the GHG Protocol Scope 2 Guidance
- Lock in long-term price visibility against volatile grid rates
- Signal additionality to stakeholders and rating agencies
The Scope 2 Guidance standardizes how companies account for purchased electricity and sets quality criteria for contractual instruments—including RECs—used in the market-based method.
Learn how commercial and industrial solar complements VPPAs for facilities that can host on-site generation.
What makes a virtual PPA bankable?
Bankable VPPAs require the same rigor as physical PPAs:
- Creditworthiness of the corporate offtaker
- Settlement mechanics and collateral for mark-to-market exposure
- REC ownership and retirement protocols
- Tenor and volume aligned with project size and production profile
Developers must ensure the VPPA supports the full capital stack—tax equity, debt, and sponsor equity.
What are the risks of a virtual PPA for buyers and sellers?
Buyers face market-price exposure in the settlement leg; sellers face offtaker credit and curtailment risk. Experienced advisors structure collars, caps, and credit support to balance these exposures.
How Sunlight helps
Sunlight Energy Investments structures and negotiates PPAs—including virtual structures—for corporates, developers, and asset owners. Our PPA advisory team brings owner-operator experience to every engagement.
To discuss a corporate procurement strategy or offtake for a development project, book a consultation or contact our advisory team.
