hello! I find alot of information about the energy of sunlight per square meter in the UK region. (https://photonenergy.co.uk/new-build-solar-pv/solar-map-of-the-uk) However, these kWh/m2 must be in the form of light energy or perhaps electricity (after adjusting with an efficiency coefficient). What I would like to know if the heat energy we can harvest from a m2 in the UK or on Earth. The heating capability of sunlight, I assume is partly due to the infrared part of its radiation as well as ...?? I am not sure. In other words, does anyone know, how much heat energy I can harvest from sunlight per m2? thanks!