The last fixed-price government contracts offered for offshore wind energy in Britain – hardly the cheapest of renewables – were under 5p per kilowatt hour (kWh). That’s less than a quarter of the typical domestic tariff (what most people pay for electricity at home) that consumers are set to face in 2022. Households are paying for their electricity several times what it now costs to generate and transmit it from the cleanest energy sources at scale.