837W all day long is 20kWh, almost exactly so I guess that's the figure used. That's roughly double my usage in the UK, and I work from home. It's ~7300kWh/yea

837W all day long is 20kWh, almost exactly so I guess that's the figure used. That's roughly double my usage in the UK, and I work from home. It's ~7300kWh/year, which is a bit lower than the US average of almost 11000kWh (https://www.eia.gov/tools/faqs/faq.cfm?id=97&t=3 https://www.eia.gov/tools/faqs/faq.cfm?id=97&t=3). In the UK it's an overestimate as we average closer to 4000kWh (chart 3: https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/449134/ECUK_Chapter_3_-_Domestic_factsheet.pdf https://www.gov.uk/government/uploads/system/uploads/attachm...)