• Increasing the utilization of solar energy for space heating through seasonal storage for both community-scale and single family home applications

• Radiation data for solar water heating and space heating systems are usually represented in British thermal units per square foot (Btu/ft2).

• Shallow geothermal energy is obtained at depths of up to 400 metres. Because the Earth maintains a far more even temperature than air or water does, it is an optimal energy source for cooling and heating buildings.