Fountaingrove Athletic Club (Santa Rosa) has installed a 135,000 gallon solar pool heating system that keeps the temperature at a comfortable 80 degrees while saving an estimated $25,000 annually on costs of natural gas.  At today's rates, it is estimated the system should pay for itself in about 3 years. Solar energy will provide 90 to 100% of heating May through September. An automatic temperature control system ensures that the natural gas-powered heater is in use only when needed to maintain the pool temperature. The system employs 75 high efficiency FAFCO Revolution solar panels. 3,600 square-feet of solar heat exchangers connect to the existing pool filtration. This new pool heating system conserves over 2 million cubic feet of natural gas and reduces emissions of 124 tons of greenhouse gases annually. Over the estimated 20-year life of the system emissions reduced by the use of solar heating amounts to taking 385 vehicles off of the road.