A Power Purchase Agreement (PPA) is a contractual arrangement in which one party generates electricity and sells it to another party at a negotiated price for a specified period. PPAs are fundamental instruments in renewable energy procurement, used by utilities, corporations, and property owners to secure power supply at predictable costs.
Contract Structure
PPAs define electricity pricing, delivery terms, duration (typically 10 to 30 years), and performance standards. Commercial PPAs often include capacity guarantees, with penalties for underperformance. Terms specify who handles maintenance, insurance, and equipment replacement responsibilities.
Renewable Energy Applications
Corporations use PPAs to meet sustainability goals while locking in electricity rates below market projections. Utilities employ PPAs to diversify energy portfolios and reduce carbon emissions. Community solar programs use PPAs to distribute renewable energy benefits among multiple participants.
Economic Impact
PPAs provide price certainty in volatile energy markets, typically offering 2 to 5 percent annual escalation compared to 3 to 4 percent for conventional grid electricity. They eliminate fuel price volatility and allow organizations to budget energy costs accurately. PPAs have become critical mechanisms for accelerating renewable energy adoption across residential, commercial, and utility-scale sectors.