This is not really a long leap. If your bottom line can be positively impacted by a decrease in energy usage, then it naturally follows that the reduction in energy consumption will benefit the environment. By reducing your store's energy consumption, you also reduce your carbon footprint, making both the ecosystem and the EPA happy.
The federal and some state governments continue to move apace toward more energy efficient lighting. We should expect that trend to continue. If we have learned anything about legislative history in general or environmental regulation in specific, it is to expect what is now relatively voluntary to eventually become mandatory.
At this point, there is little question that energy conservation legislation will expand the demand for LED lighting. It is the type of regulation that can actually help reduce your facility maintenance expenses while improving store setting.