Certified renewable sources are electricity supplies that can be traced to approved renewable generation through a recognized certification system, such as renewable energy certificates or guarantees of origin. The certificate is the proof, not just the marketing claim: it links a unit of consumed power to a documented renewable production event. This matters because energy labels are only trustworthy if the tracking records are accurate and not duplicated.
In cyber security, the certification chain depends on the integrity of metering data, registry databases, and supplier systems. Attackers may try to tamper with records, forge certificates, or exploit weak access controls to create false green claims or hide fraudulent energy attribution. Defenders protect these systems with strong authentication, logging, segregation of duties, and reconciliation between generation, registry, and billing data. For organizations, certified renewable sourcing is also part of supply-chain trust, where digital evidence must match the physical flow of power.