By Saskia Koopman Excess heat from London’s Underground will power iconic buildings in a new £1bn net zero scheme. This low-carbon network will soon channel excess heat from the Underground to power several sites in central London, namely Downing Street and the National Gallery. This comes followinglast week’s Budget, in which chancellor Rachel Reeves announced significant investments in green energy, including a £2bn pour into UK’s hydrogen schemes. The initiative was recently launched by Hemiko and Vital Energi, who have partnered to transform Westminster’s heating infrastructure, marking a …