In a recent interview, Walmart’s Vice President of Energy told reporters, “Walmart has reduced energy expenses by more than a million dollars through our solar program, allowing us to pass these savings on to our customers in the form of every day low prices.” Walmart plans to switch to 100% renewable energy by 2020, up from about 20% today. But Walmart isn’t the only corporation that has seen the benefits of solar power systems. Costco, Apple, FedEx, Google, and Kohl’s are among the companies that have made investments in solar power and seen tangible benefits to their bottom line.

For an impact on a smaller scale, at a local company, take a look at Steve Mancinelli’s Auto Repair Shop in Denver, Colorado. We installed 64 solar power panels on the roof of Mancinelli’s Auto Repair at the end of 2010. In a recent interview with the Denver Business Journal, Mancinelli said he’s very happy with his decision to install a solar PV system, as well as the small size of his electricity bill. Mancinelli believes his system will pay for itself in less than seven years.

If you have explored a solar PV (photovoltaic) system for your business in the past, it may be time to get another quote. Solar PV system prices have decreased significantly in the past five years, while the cost of electricity from utility companies, and, subsequently dirty sources of energy, has been steadily rising.