Work lights strung up along railings illuminate a dank cavern where workers are preparing to transform a former oil depot into a hot water "thermos" to heat a Swedish town.
Work lights strung up along railings illuminate a dank cavern where workers are preparing to transform a former oil depot into a hot water "thermos" to heat a Swedish town."We are now converting it into a giant thermos to store hot water in," explained project manager Rickard Svensson at power and district heating company Malarenergi in the city of Vasteras.