Recent changes in regulation have caused many solar installations to undergo grid voltage issues. After a tricky period during which we have had to go back to some installations a few times to fine-tune, network operators have been very pro-active in fixing the voltage issues that were causing the problems, and the worst is now comfortably behind us. High grid voltages make for inverter outages When you are producing more power than you are using, your inverter needs to send some power back to the grid. In order for a solar inverter to return power to the grid, it must put out a higher voltage