ited . ▁The ▁deal ▁was ▁designed ▁to ▁enable ▁growth ▁in ▁the ▁company ' s ▁energy ▁supply ▁business ▁and ▁increase ▁the ▁customer ▁base ▁for ▁its ▁product ▁and ▁services . ▁ ▁In ▁April ▁ 2 0 1 8 , ▁Flow group ▁pl c ▁announced ▁its ▁intention ▁to ▁sell ▁Flow ▁Energy ▁to ▁Co - op ▁Energy . ▁Flow group ▁had ▁previously ▁sold ▁its ▁bo iler ▁technology ▁business ▁to ▁focus ▁on ▁energy ▁supply . ▁The ▁sale ▁was ▁completed ▁in ▁May ▁ 2 0 1 8 ▁and ▁following ▁the ▁completion ▁of ▁the ▁sale ▁of ▁the ▁bo iler ▁and ▁the ▁Energy ▁business , ▁Flow group ▁de - list ed ▁form ▁the ▁UK ▁stock ▁market ▁and ▁subsequently ▁entered ▁administration ▁in ▁November ▁ 2 0 1 8 . ▁ ▁Bo iler ▁Ar ound ▁ 2 0 1 4 , ▁the ▁company ▁developed ▁a ▁household ▁bo iler ▁that ▁fed ▁back ▁electric ity ▁to ▁the ▁local ▁distribution ▁network . ▁The ▁bo iler , ▁which ▁was ▁available ▁to ▁customers , but ▁never ▁appeared ▁on ▁general ▁sale , ▁ ▁from ▁early ▁ 2 0 1 6 , ▁provided ▁he ating ▁and ▁hot ▁water ▁whilst ▁also ▁generating ▁low - car bon ▁electric ity ▁using ▁its ▁pat ented ▁Micro CH P ▁( Com b ined ▁He at ▁and ▁Power ) ▁technology , ▁in ▁which ▁waste ▁heat ▁ev apor ated ▁a ▁low - bo iling - point ▁liquid ▁to ▁run ▁an ▁inter lock ing ▁tw in ▁ 2 D ▁scroll - shape ▁tur bine ▁generator . ▁The ▁bo iler ▁was ▁not ▁econom ically ▁vi able ▁ ▁Question s