Usually it's fundamentally worth less, but not a specific amount less, the way Jamaican dollars and lead are. And, if you're using resistive heating, they're worth exactly the same amount.
You can convert electricty to heat at 1:1 in the absolute worst case. The opposite is not possible even in the absolute best case, and in practice you are looking at about a 60% exchange rate for 'high-grade' heat.
You can convert electricty to heat at 1:1 in the absolute worst case. The opposite is not possible even in the absolute best case, and in practice you are looking at about a 60% exchange rate for 'high-grade' heat.