Renewable Energy Certificates (RECs) are created from every megawatt hour of electricity produced by a solar generator. A 10 kW system produces about 12 RECs a year. RECs are sold separately from electricity and are created regardless whether the electricity is used on site or sold elsewhere.
Electricity suppliers must buy RECs to meet the New Hampshire RPS requirement. There is no ceiling or floor to the pricing of the RECs, it is a demand and supply market where the demand is set by the State and the price is set by the market.
Since individual solar owners do not produce enough RECs to sell directly to buyers, an intermediary must exist. A broker is the link that connects buyer and sellers. The broker is paid a commission of the sale of the REC(s) which i is predicated on the size of your system. Aggregate pools of smaller producers create visibility for them at auction.
Most HAREI members have signed up with Knollwood Energy to register and sell their RECs.