practical . we design and manufacture the most reliable cost effective and highest performing concentrating solar power csp systems in the world . practical solar heliostats can supply all of the heating and cooling needs of commercial buildings and are designed to pay for themselves in two to six years . a large reservoir of water brought to near boiling temperature can inexpensively store enough energy to supply all the hvac requirements of a commercial flat roofed building for weeks in new england in the dead of winter . practical energy storage overcomes the primary complaint leveled against solar energy . practical solar heliostat systems are also used for other applications including tests for nasa s solar probe mission . please read the technology page for more information and contact us to place an order or discuss ip licensing and project opportunities . 2015 practical solar inc. all rights reserved.about contact