I think "where did my electrons come from" is a question that many environmentally conscious but not particularly technical people are asking. My parents got a

I think "where did my electrons come from" is a question that many environmentally conscious but not particularly technical people are asking. My parents got a letter from our power company about ESCOs and I wound up having to explain to my mother how a power grid works and how the generators put power in and we take power out, but not necessarily the same power that we purchased from them. (It seems a lot of people have trouble with the concept of fungible commodities in general, which is why the envelope budgeting method is so successful: it 'de-funges' the money and makes the budget a lot easier to think about.) It sounds like this company is taking advantage of this confusion to give their customers peace of mind about actually "knowing" where their electricity came from, instead of sending some money off to the power company and hoping they do what they said they would with it. To this they add some buzzwords like "blockchain" and "sharing economy" to make the company more interesting so it gets featured in news articles. There may be some actual technical merit in there, but it's very difficult to tell under the hype.