How big the roof needs to be to house solar panels enough to supply 50 families? Not everybody leaves in single-family housing in suburbs, some people live in d

How big the roof needs to be to house solar panels enough to supply 50 families? Not everybody leaves in single-family housing in suburbs, some people live in dense highrises. From what I can see, average EU consumption is 6000 kWh per capita per year, or 500 kWh per month. As far as I found, solar panels can provide about 200 W per square meter. According to https://climatebiz.com/average-peak-sun-hours-united-kingdom/ https://climatebiz.com/average-peak-sun-hours-united-kingdom..., this requires - in London - 28 square meters per person to cover their electricity needs. For a multi-family house housing 100 people that'd be 2800 square meters. That seems to be a bit too big to fit on a roof (and we haven't accounted for distribution losses, needing to space them out to be able to actually get to them and service them, etc). Now take houses like these: https://en.wikipedia.org/wiki/Apartment#/media/File:St_James_Town1.jpg https://en.wikipedia.org/wiki/Apartment#/media/File:St_James... and there would be likely more than 100 people per house...