‘Next Generation Data (NGD) claims it is the first data center operator in the world to guarantee clients a perfect power usage effectiveness (PUE) ratio, thanks to a rooftop solar farm which powers its passive cooling systems. Analysts have criticised the claim as greenwash.

NGD claims it can contractually commit to offering customers a PUE of 1.0 at its Newport (Wales) facility, through a combination of sustainably sourced mains power and free cooling systems run on solar power. Working with utility npower, it has installed a rooftop solar panel farm at the ts 750,000 square foot facility in South Wales, capable of generating one million kilowatt hours (KWh) of ‘green’ electricity per year (that’s an average power of about 100kW, or enough total energy for 240 homes).’

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