In fact, many homeowners and renters now use indoor solar lighting for backup, ambiance, and energy savings. If you're wondering how to make it work inside your home, this guide will help you understand what's possible, what to expect, and how to set it up the right way. First, How Do Solar Lights. . We've all seen the solar lights that are usually used outside to light up pathways, patios, and lawns. Those lights are really awesome. They help us reduce our carbon footprint on the planet and save a lot of cash in the long run. They reduce electricity bills, 3. Installation is easy and cost-effective, 4. In contrast to outdoor spaces where sunlight is plentiful, the limitations of indoor settings—like windows, surrounding walls, and furniture—can significantly reduce. .