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Using green hydrogen instead of diesel twinset generators at all sites during one live episode of Winterwatch avoided 3.3 tonnes of carbon emissions.

The BBC explain: The hydrogen generator is located at Winterwatch’s outside broadcasting hub at BBC Bristol and is helping to replace the use of a diesel powered generator. Diesel generators are traditionally used in live outdoor productions, as filming often uses too much power to draw energy from the grid.

Across the show’s presenter locations, the production team used batteries powered by intelligent hybrid generator systems which use spare energy to charge batteries, significantly minimising the use of diesel fuel and CO2 emissions.

Provided by Siemens Energy and Geopura, the hydrogen generator uses hydrogen gas made by splitting water into hydrogen and oxygen using electricity generated by solar and wind power. When used the hydrogen turns back into pure and drinkable water, meaning that the ‘exhaust’ is emissions and waste free and the process is entirely circular.

The hydrogen generator will remain at BBC Bristol’s outside broadcasting hub for the duration of the Winterwatch series, with plans already in place to bring back the use of green hydrogen for future series.

Julian Hector, Head of BBC Studios Natural History Unit, said: “Everyone at Winterwatch and the BBC Studios Natural History Unit is punching the air at the prospect of finding a way to make our productions more sustainable. This is a superb development for us and the environment, and exactly the kind of thing we want to do more of.”

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