Mention "solar" and most people think of photovoltaics -- solar panels that generate electricity. But there is also solar hot water, or solar thermal, a system that preheats the water used for showering, washing dishes, etc.
Boston Building Resources staff member Deb Beatty Mel had solar thermal installed at her home in December 2012. Because she has a slate roof, the installation is a bit unusual, with panels on the side of the house.
To see a slideshow of the installation, click on the image.