Solar Cement

• Cement takes 5 MJ/kg - [1]
• A 200kW panel produces 4300 MJ per day. [2]
• (1 kHwr = 3.6 MJ)
• Solar array can produce 860 kG of cement per day. That is 43kg. 20 sacks of portland cement per day. That is $10 per bag - or $200/day
• The value of electricity only is $120 - so that is value added electricity right there.