Interestingly, this is an emergent property of bitcoin, if energy producers begin mining bitcoin (or selling to miners) to maintain base load and recoup losses

Interestingly, this is an emergent property of bitcoin, if energy producers begin mining bitcoin (or selling to miners) to maintain base load and recoup losses on otherwise wasted energy. After that, if a purchaser pays less than the profit from mining then energy producers will opt to mine instead. Once that happens, energy producers will de facto be pricing their energy in bitcoin, and from there it's a tiny hop to them trading energy with each other using it.