2018-11-01  Energy is a large subject, I am presently working with solar energy to power the house and the electric car.  The size of the solar collector system is 13 Kw with 45 solar panels.  It should produce about 12 000 Kwh per year.  The house presently use about 6 000 Kwh of electricity per year.  There should be enough power left for the car.  The house is heated with a wood boiler and/or a pellet boiler that are in in the workshop.  A 3 ton heat pump was installed in 2019 to use the surplus electrical energy produced by the solar collector, otherwise the surplus would be wasted.