An Energy Attribute Certificate (EAC) is a unique electronic certificate, which acts as proof that renewable electricity has been produced. EAC markets were created because electricity cannot be tracked between producer and consumer as other products can. When you buy power, you’re not buying physical electricity but rather the right to remove a given amount from the grid. The only way to track it is through a book & claim accounting system. That is why EAC’s are used to certify that the bearer owns one MWh of electricity generated from a renewable energy resource. These renewable energy certificates are issued by governmental organisations to track, prove and disclose the production and use of renewable electricity and can be sold or used as a credit against power usage.