snowcrustracer wrote:
I'm pretty sure the Power companies hate having to pay customers for excess solar. I know around where I live Eversource is fighting tooth and nail to change the laws so they will not have to.
One of the issues is that some of these systems have been causing is the voltage monitors that only allow power to go back onto the grid if it is 5 volts over the system voltage. So if you put a volt meter line to line at your meter you normally see 120/240 volts. Your solar converter would have to raise the voltage to 122/245 volts to push back into the grid. As more and more people get panels the voltages go higher and higher to push back onto the grid. So power companies are seeing unpredictable grid voltages in some neighborhoods causing the solar customers to loose $$$. It is not uncommon to see 250 volts line to neutral on some sunny days. The power companies complain it is causing damage to the grid...and costing to much to place voltage regulators in every neighborhood to control the higher voltages caused by the solar customers. This will be the justification these companies use to end the payback program.
My 2 cents.
I would like to see a reference to this. If a home solar can affect grid voltage a full 5 volts there is something wrong with the grid in this area.
