Cheap it may be. But is your electricity supplier clean or downright dirty? The argument over coal-fired power - often rated as the filthiest - is now white hot.
When we revealed a fortnight ago how to find the cheapest gas and electricity suppliers, E.ON emerged as one of our best buys. Readers then told us that, instead of saving money with E.ON, they wanted to switch away from the firm to protest against its involvement with new coal capacity at Kingsnorth, site of the Camp for Climate Action this summer.
Electricity has to come from somewhere - and most generation involves CO2 emissions or nuclear waste.
Only Good Energy is 100% sourced from renewables such as wind and waterpower. All companies have been set a government target of 9.1% of electricity from renewables by next March, rising to 15.4% by 2016.
Top of the coal burners is Scottish Power, where 55% of its generation comes from coal, substantially greater than its rivals. Not surprisingly, it also heads the carbon emission table.
EDF is the next biggest coal user at 47% followed by npower at 44% and E.ON at 42%. E.ON’s percentage is likely to rise should Kingsnorth get off the ground.
By contrast, British Gas (Centrica) takes just 18% of its needs from the fuel. It uses its own gas for electricity generation. But for those whose main worry is nuclear energy, Scottish Power’s supplies to its five million customers comes out well at only 1%.
Ecotricity, which figures prominently on green lists, mixes coal, nuclear, renewables and gas in almost equal amounts. The firm concedes it does not have a 100% green fuel mix although it does offer a 100% green supply for those who want it. “We are working towards more renewables. Our most popular tariff is made up of around 70% brown energy. Buying existing green energy, which is what most 100% tariffs contain, does nothing at all to reduce CO2 emissions or increase UK green energy capacity - you simply take something that already exists and have it for yourself.
“Robbing Peter to supply Paul is how we like to describe it. Most 100% green tariffs are a con, because they tell you you’ll reduce your carbon footprint etc, but don’t tell you someone else’s will go up as a direct result. Nothing really changes - it’s just a redistribution of existing green sources.”
Scottish Power says its high coal dependency is due to inheriting coal-fired stations - it owns Longannet station in Fife, one of the biggest in the UK. It is investigating “carbon capture” techniques. These cut down on emissions but are controversial on cost and energy grounds.
It says: “We will spend around £1bn on new renewable projects in the next two years including Europe’s biggest windfarm, Whitelee near Glasgow. Our renewable portfolio will be 10% of our capacity by 2010.”
But those who want pure green energy have to pay for it. A typical 3,300kilowatt electricity consumption costs £484 with Good Energy or £436 with Ecotricity New Energy Plus.
Scottish Power’s Green Energy H2O (it comes from hydropower) costs £354 (the same as its non-green supply) while the cheapest for non-green tariff (British Gas Click 5) costs £295.
Meanwhile Friends of the Earth says the best way to cut carbon is to turn off lights and power.
Source - The Guardian
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