With one of the energy companies participating (Octopus Energy) the reward was for every KW you used less than your average [1], and the average saved looks lik

With one of the energy companies participating (Octopus Energy) the reward was for every KW you used less than your average [1], and the average saved looks like it was about half a kilowatt (108MW saved by 200K homes - 400K homes signed up but presumably half of them used the same or more power than normal and half used less and were eligible for a reward). So presumably this was people not using ovens, kettles, and washing machines for an hour, rather than sitting in the dark and unplugging phone chargers. [1] https://octopus.energy/saving-sessions/ https://octopus.energy/saving-sessions/ [2] https://octopus.energy/press/believe-it-or-watt-octopus-energy-customers-provide-108mw-of-grid-flexibility-in-first-saving-session-equivalent-of-a-gas-power-station/ https://octopus.energy/press/believe-it-or-watt-octopus-ener...