Our Fuel Mix

100% Green Progress
Where our electricity comes from

This is where we publish our fuel mix – to show where our electricity comes from.

We update this table each year as the figures come in. It presents a good perspective on our progress – as we turn our energy supply from brown to green.

The latest year we have figures for is the year ended March 2014 and we've added those to the table below. In that year 86.5 per cent of the electricity we supplied came from green sources and over 40 per cent of that electricity was generated by our own wind and sun parks, all built using money from our customers’ bills.

We actually only supply 100 per cent green electricity, and have done since August 2013, but because this change took place part way through the ‘fuel mix accounting year’, the figure for that year is less than 100 per cent green.

Fuel mix history in detail

Below is our fuel mix for the last six years with the UK National Average figures in the end column for comparison. As you'll see, we're making great progress turning brown energy to green.

Fuel Supply Ecotricity National
  Apr 08 - Mar 09 Apr 09 - Mar 10 Apr 10 - Mar 11 Apr 11 - Mar 12 Apr 12 - Mar 13 Apr 13 - Mar 14 UK average
Natural Gas 19.1% 32.3% 24.0% 19.7% 10.9% 4.1% 25.6%
Coal 17.1% 20.2% 17.5% 12.1% 18.5% 7.2% 34%
Nuclear 16.0% 4.3% 2.6% 2.3% 1.7% 1.3% 21.6%
Other 2.2% 2.2% 1.8% 1.6% 1.4% 0.9% 2.1%
All Brown 54.4% 59.0% 45.9% 35.7% 32.5% 13.5% 83.3%
Renewable 45.6% 41.0% 54.1% 64.3% 67.5% 86.5% 16.7%
Environmental Impact
232.5 308.7 266.6 195.5 219.2 88.6 428
0.00160 0.00043 0.00026 0.00021 0.00015 0.00010 0.00173

* CO2 emissions are in g/kWh.

** Radioactive waste relates to high level waste in g/kWh.

Renewable supply figures include a loss factor for transmission and distribution losses of 1.11 for the April 2013 to March 2014 disclosure period. Fuel mix Disclosure table relates to electricity supplied through the Renewable Energy Company Ltd.

People Power

All of this progress is down to people like you – the best thing you can do and the most change you can bring with your electricity bill is simply by being with us.

Over the past decade we’ve spent an average of £252 per customer each year on building new sources of green electricity. You can switch here, or find out more.

Al Gore

As more and more people understand what's at stake, they become a part of the solution, and share both in the challenges and opportunities presented by the climate crises.

Al Gore