If you meant "buying" as an investment, common strategies include:
: Buy certificates from online sellers or brokers; each REC represents 1 megawatt-hour (MWh) of green energy added to the grid. buy renewable energy
: Sign up with your local utility to source all or part of your power from renewable sources like wind or solar. If you meant "buying" as an investment, common
: Sign long-term contracts directly with renewable energy developers to purchase physical power. buy renewable energy