It's a new form of power that could become a valuable source of renewable energy. Thames Water is investing £250m in a plant that will process human waste.
There's no shortage of supply and, if it works, the plant in Oxford will generate enough electricty to supply 37,000 homes. Kate Bunkall takes up the story.
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Patchy rain tonight ahead of another cloudy and breezy day tomorrow. Rain and stronger winds arriving from the west tomorrow evening.
Staying cloudy with patchy rain tonight. Rain and stronger winds arriving from the west tomorrow evening.
Cloudy and breezy with rain arriving from the west later.