RECs Renewable Portfolio Standards Explained
Most states have Renewable Portfolio Standards (RPS), which mandate a specific percentage of the retail electricity sold be derived from a renewable energy source.These state mandates may also be satisfied through the purchase of Renewable Energy Certificates (RECs). One REC is equivalent to one megawatt-hour or 1000 kilowatt-hours of renewable energy. RECs are created when a renewable energy generator tied to the grid produces 1000 kWh (or 1mWh). These RECs can be bundled with the physical power or sold separately. On their own RECs represent the characteristics of renewable based generation. When RECs are separated from the physical energy, the owner or consumer of that physical energy can no longer claim the attributes associated with renewable energy.