How much energy is used when working from home?

Despite many businesses now reopening after lockdown, many office-based businesses have discovered that their employees can work just as effectively from home. Facebook, for example, is considering retaining this mode of working even when the threat from coronavirus has fully subsided. Home-working saves money for businesses that no longer have to heat, light, and maintain large office premises. Employees are spared the daily commute, saving both money and time.