I had an inverter go bad from a company that is now out of business. I searched for quite a while for a company that would repair my inverter. Many said they couldn't because the old inverter was proprietary and they couldn't service it. I was finally pointed to G3 / Solar Butler and they came to my house to evaluate my situation. They were able to find a compatible inverter. I am once again in the Solar Power business. Thank you Solar Butler!