The Solar Energy Industries Association (SEIA) does not currently have a list of solar loans that are tax deductible. But, it's worth noting that the federal government offers a variety of incentives for homeowners who install solar panels, including a 30% tax credit off the cost of the system. There may be state and local incentives available as well, so it's worth checking with your local government or utility to see what programs are available in your area. And, always consult with a tax professional to see if you're eligible for any deductions or credits related to your solar installation.