I think he's mistaken is saying that it'll only come from PV; it's for all forms of 'sustainable' energy (I myself wouldn't count PV under that, but the popular

I think he's mistaken is saying that it'll only come from PV; it's for all forms of 'sustainable' energy (I myself wouldn't count PV under that, but the popular opinion does so I'm including it here). So it's including geothermal, air heat pumps, zero energy use for residential heating (high insulation and heat recuperation in ventilation systems), etc.