$5 – $7 / watt.  Today, in most regions of California it is quite common to see commercial solar systems installed and saving businesses money.

It depends on the size of system that is installed and the other finances; generally speaking, the annual cost of a system is always less than the amount saved in utility costs. So, the answer is less than the money saved in electricity.

All PV solar panels that we sell and install come with a manufacturer’s performance warranty to 25 years. These solar panels are expected to last up to 30 years and beyond.

Typical PV solar power systems are incredibly reliable and have very little routine maintenance requirements.  A semi-annual panel cleaning with water is generally sufficient to ensure efficient panel and system operation.