I called these people in the evening when all the lights in my house dimmed to about half of normal. The gentleman asked me a few questions and narrowed the cause down to 1. A problem with my main circuit (costly repair) or 2) a problem with SDG&E. He recommended I rule out SDG&E first. Turns out it was their issue! So he saved me an expensive service call. I would definitely use this honest and helpful company again.