We have

gas.  We use propane gas to run our central heating and hot water system. We have about 500 litres delivered every January, that lasts a year.  Roy rang CEPSA yesterday, we had a phone call last night, gas would be delivered today between 3.30pm and 3.45pm, guess what.... it arrived at 3.30pm, very good for the Spanish.  The tank took 550 litres, which will see us through until next February.  House now toasty warm.