Solar PV Electric | Solar Water Pumping | Renewable Energy Systems.If you would like a free subscription to our catalog please visit our website and click on the "order catalog" link. Our catalog has been running since 1981 and is filled with easy to use design guides, pre-packaged systems, and info about our upcoming workshops, and all of the consious products that Sierra Solar Systems has to offer! Sierra Solar Systems in a division of EnPower Systems Inc.Sierra Solar is here to provide solar and renewable energy to conscious consumers. We have been doing so for 30 years and we are still here to answer any questions you may have about solar power design or installation. We also provide a number of other renewable energy items such as, tankless H2O heaters, wind turbines, and hydro-electric turbines. If you are interested in the conservation of our natural recourses, or you would like to "Go Green" to save some green, feel free to call us with any questions you may have.