What is Renewable basis?

The renewable basis is the method an energy supplier uses to back its green electricity claim, and the two main approaches work differently. With a power purchase agreement, the supplier buys power from a specific generator for a defined period. With certificates, the supplier buys guarantees of origin or similar instruments to offset the energy it sells. 100Green states ppa, which points to a direct agreement with a generator. Alperia, Aras Energy, Budget Energie and Budget Thuis Internet each state certificates. Neither approach is automatically stronger, so read the basis alongside the renewable share when you compare plans.