There is an over supply of gas around the world. Wholesale prices are almost rock bottom. And yet British Gas has hiked its electricity prices by a searing 12.5 %. Faced with a barrage of outrage, it states that this is the first rise in 4 years, and blames government energy subsidies and the rising price of power transmission. Bottom line? The move will affect over 3 million customers and add around £76 to the average dual fuel bill.