T he owners of one of Britain’s top spa hotels are set to slash their bills by £8,000 a year after installing an iVolt unit as part of a drive to tackle rising energy prices. As well as the financial savings, bosses at Surrey’s five star Alexander House will see their annual carbon emissions drop by around 70 metric tonnes – the equivalent of taking 14 family cars off the road each year. With an award-winning spa and pool complex, two res

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