Passive solar design means utilising the sun’s energy to power a home. This can be achieved with adequate shading, insulation, thermal mass, skylights, the correct positioning of windows, choice of roofing and much more. Chosen materials may emit, reflect or absorb the sun’s rays in order to either heat or cool your home. This design practice keeps the interior temperature even and helps to lower your monthly utility payments. Using less energy for heat and cooling also means making less of an impact on the environment.