Despite claims from a certain Republican vice-presidential candidate that the failure of Solyndra was a sign of a “make-believe market” for solar power, and grumblings from Republican congressmen and Mitt Romney about the merits of investment in solar power technology, a new report today indicates that many of the country’s biggest companies are still committed to bringing more sunlight into their energy portfolios.

Walmart uses more solar power than any other US company, according to the Solar Energy Industries Association. All told, the twenty companies on the list had 279,122 kilowatts of solar installed by mid-2012, accounting for roughly twelve percent of America’s total solar capacity.

That Walmart would top the list isn’t a huge surprise, given that it’s the biggest company on Earth, but still, encouraging, right? Now if it could just clean up that pesky supply chain…