This week we spoke to Ryan Law, founder and MD of Geothermal Engineering Limited (GEL) – the company currently developing the UK’s first geothermal power plant at United Downs in Cornwall. In our past articles about the recent resurgence of interest in geothermal power, we’ve portrayed the new Enhanced Geothermal Systems (EGS) or “hot dry rock” approaches as categorically different from older forms of geothermal – with kilometers of drilling instead of hundreds of meters, and with injected water instead of pre-existing water deposits. Law says such categories are misleading – “It’d be like splitting the oil industry into deep and shallow”, with real-world projects straddling and combining the different approaches. Reinjecting water, for example, began all the way back…