1 kWh generated by the customer has the exact same value as 1 kWh consumed by the customer. (gracelinks.org)
Net metering credits each kWh of unused solar generation at same value as another kWh drawn from the grid at a later time. (solar-estimate.org)
The idea that resource extraction doesn't «add value» is just silly: no one thinks that a cubic metre of bitumen buried under several hundred metres of rock has the same value as a cubic metre of bitumen that has been brought above ground. (canadianbusiness.com)