Power is pooled. If I buy from a supplier or group of suppliers that (1) procures only from renewable resources (2) isn’t reselling power from non renewable sources, (3) hasn’t sold the power more than once, and (4) is capable of providing my energy demands at any given time, then I am buying green power from the pool. It doesn’t matter if the actual electrons come from Ng or coal because I bought enough for the pool (the electrons I added to the pool will be used by someone else if I am using ng electrons).
Not 100% sure this is how Caltrain works but the fact that everyone is physically using the same pool does not imply that you cannot be 100% renewable if you buy from suppliers to the pool with the above properties.
Not 100% sure this is how Caltrain works but the fact that everyone is physically using the same pool does not imply that you cannot be 100% renewable if you buy from suppliers to the pool with the above properties.