Homes and businesses heated by biomass boilers face skyrocketing costs as supplies of wood pellets are disrupted by Russia’s invasion of Ukraine.  Russia is a major exporter of burned wood pellets for heating, but UK importers are now scrambling to find alternative supplies.  Thousands of homes and businesses have switched to wood pellet heating systems in recent years, encouraged by government support.   Prices in the UK are thought to have risen by between 25pc and 40pc to as much as £385 (EUR 456) a tonne, in line with costs across Europe.  ...