Five companies are buying renewable energy certificates (RECs) from a Texas solar farm to help toward their clean energy goals.
The companies have signed a 16-year, aggregated virtual power purchase agreement (VPPA) with Canadian Solar subsidiary Recurrent Energy for the full output from the 100MW Liberty Solar project being built about 50 miles from Houston.
The project will begin supplying power to the grid overseen by the Midcontinent Independent System Operator (MISO) in 2024, at which point it will generate enough electricity for about 15,000 households, according to Recurrent.
The buyers include California-based software company Autodesk; US biotechnology company Biogen; EMD Electronics, a subsidiary of German pharmaceutical firm Merck; and Boston-based internet retailer Wayfair. The last signatory is an undisclosed "large healthcare company."
Merck will receive the largest share, 40MW, which will contribute to the company's aspirations to match 80pc of its global electricity purchases with renewable energy by 2030. When combined with a previous agreement with developer Enel for a 68MW share of the 350MW Azure Sky wind and storage project, Merck will be able to source 90pc of its US electricity consumption from renewables.
Biogen, Wayfair and Autodesk will receive 20MW, 15MW and 10MW shares of the Liberty solar farm, respectively. The health care company purchased the remaining 15MW.
VPPAs establish a predetermined price for the electricity from a project while allotting the associated RECs to the buyer. The project owner sells the electricity into the market separately from the RECs. If the price for the electricity exceeds the contract's predetermined price, the buyer receives the difference. Conversely, the buyer must cover the difference when the price for electricity falls below the predetermined level.
None of the identified companies immediately answered enquiries about how they plan to handle the RECs associated with their shares. Companies with sustainability goals typically retire the credits, taking them out of circulation, as doing so is the only way to claim the use of carbon-free electricity from a bookkeeping standpoint.