We're all aware, painfully, how much the cost heating oil has increased but are we all aware that it is now more than electric. Current price is near 60p/l (ex VAT) where as cheapest E7 night time is 5.2p. Heating oil is 10.35 kWhr/l which means you need a condensing boiler (93% efficiency) and oil at 50p/l to beat that.