Most businesses, strip malls, and big-box stores and office buildings sit in direct sunlight all day, every day of the week.
These buildings could have solar panels installed to put energy into their own buildings, and put the excess energy back into the grid. This will help reduce our dependence on fossil fuels while saving (or even earning) the business money every day of the week.
In order to make it a profitable endeavor for businesses, the federal government can use tax incentives to encourage owners and/or CEOs of big box stores, malls, and office / government buildings to install solar panels, thus reducing their own tax burden, save money on their own energy bills, and create revenue for the business by putting excess energy created back into the grid.