Solar Energy is a Chicagoland business dedicated to providing an affordable alternative to rising electricity costs. Since 1982, Solar Energy has helped thousands of homeowners lower their monthly electric bills by installing photovoltaic solar energy systems on their homes. However, that's not all. Solar Energy also offers solar hot water heaters and pool heaters. The philosophy of Solar Energy is simple: provide high quality, affordable, energy efficient solar power products for your home and business.
At Solar Energy of Illinois, we want to educate consumers how the use of fossil fuels affects the earth. We know that clean, reliable solar energy is an alternative to these fossil fuels and the toxins emitted when they are converted to energy. We offer a full range of solar energy products that are better for our planet and will help future generations. Our commitment to our customers is paramount to our success. We will continue to offer the very best solar energy products, couple with outstanding customer service before, during, and after the sale.
Our highly trained technicians install our solar products with the greatest of care, as if it was their own property. Our sales staff is available to answer any questions or concerns you may have and they can assist you in determining which solar energy products will work best for your needs and your budget. Our repair personnel will quickly and efficiently take care of any issues you may have with solar energy products.

One of the easiest ways to lower your monthly electric bill by up to 30% is to install a solar hot water system. It is undoubtedly one of the easiest ways to save money and it provides hot water through a clean, renewable energy source that is safe for the environment. Many homeowners are turning to solar hot water systems to save money, as well as the planet's valuable natural resources.
How it works?
There are two basic types of solar hot water systems. One is an active system and the other is a passive system. Both types require well insulated storage tanks and solar collectors. The main difference between the two systems is that the active system has circulating pumps and controls, while the passive system does not.
Some solar hot water systems have two tanks. One is used to heat the water and then transfer it to a conventional water heater. However, there is also a single tank system that heats the water and stores it all in one tank. You may find that one will suit your family needs better than another and we can help you decide.
A drainback system uses water as the heat transfer fluid in the collector loop. A pump pushes the water through the collectors. Gravity then takes control and pulls the water into the storage tank and heat exchanger located below the collectors.
There are two basic types of solar hot water systems. One is an active system and the other is a passive system. Both types require well insulated storage tanks and solar collectors. The main difference between the two systems is that the active system has circulating pumps and controls, while the passive system does not.
Some solar hot water systems have two tanks. One is used to heat the water and then transfer it to a conventional water heater. However, there is also a single tank system that heats the water and stores it all in one tank. You may find that one will suit your family needs better than another and we can help you decide.
A drainback system uses water as the heat transfer fluid in the collector loop. A pump pushes the water through the collectors. Gravity then takes control and pulls the water into the storage tank and heat exchanger located below the collectors.
One of the benefits of this system is that when the pumps are shut down, the water empties out of the collectors. This eliminates the chance of freezing. It also allows the storage tank to shut off, should it become too hot.
At Solar Energy of Illinois, we can install a drainback system with your choice of an 80 or 120 gallon storage tank. There is a backup electric element if it is needed, as well as a programmable controller.
This ensures that your water is heated to the temperature best suited for your family. The collectors are available in a roof intergrated design or as a simple roof top design. However, the roof intergrated systems are specifically for re-roofing projects or new construction.
At Solar Energy of Illinois, we can install a drainback system with your choice of an 80 or 120 gallon storage tank. There is a backup electric element if it is needed, as well as a programmable controller.
This ensures that your water is heated to the temperature best suited for your family. The collectors are available in a roof intergrated design or as a simple roof top design. However, the roof intergrated systems are specifically for re-roofing projects or new construction.
![]() GE's solar electric power products and systems offer reliable, high quality power solutions for industrial, commercial, and residential applications. The sun can supply local power with no noise or air pollution and it works with both on-and-off grid systems. GE has been around since 1901 and now powers parts of over 100 different countries around the world. Their integrated rooftop solar photovoltaic systems are helping millions of homeowners reduce their monthly electric bills and preserve the natural resources. As they continue to develop new solar products, it's clear this company is concerned about the future of the planet. ![]() BP Solar is a key division of BP's Alternative Energy business. With over 2200 employees, this global company is focused on using the sun's energy to create solar power for electricity. They are focusing on cleaner, newer technology sources to help conserve the natural resources of the earth. With manufacturing facilities in China, the United State, India, and Spain, BP Solar has become one of the largest solar companies in the world. They design, develop, manufacture, and market many different solar electric systems for governments, businesses, and homeowners. They strive to build only the very best solar products available today. |
SE-21 3x7 22,900 BTU per day max Our thermal collectors feature Black Crystal selective coatings with an absorptivity rating up to 0.96 providing one of the highest efficiens in the industry. Rugged, powder-coated, extruded aluminum construction gives decades of trouble-free service, while our low-profile and simple mounting system make an attractive installation on your roof. FEATURES • Active indirect water heating with Drain-back technology • Eliminates both freezing and overheating concerns • Same narrow footprint as a standard 80 or 120 gallon water heater • Electric element for back-up heat if needed • Includes a dual-use flow meter and sight-glass • Includes programmable electronic controller with direct-read tank • Uses Solar Energy, Inc. glazed thermal collectors • Certified by the Florida Solar Energy Center and Solar Ratings SE-32 4x8 33,100 BTU per day max Our thermal collectors feature Black Crystal selective coatings with an absorptivity rating up to 0.96 providing one of the highest efficiens in the industry. Rugged, powder-coated, extruded aluminum construction gives decades of trouble-free service, while our low-profile and simple mounting system make an attractive installation on your roof. FEATURES • Active indirect water heating with Drain-back technology • Eliminates both freezing and overheating concerns • Same narrow footprint as a standard 80 or 120 gallon water heater • Electric element for back-up heat if needed • Includes a dual-use flow meter and sight-glass • Includes programmable electronic controller with direct-read tank • Uses Solar Energy, Inc. glazed thermal collectors • Certified by the Florida Solar Energy Center and Solar Ratings SE-40 4x10 41,100 BTU per day max Our thermal collectors feature Black Crystal selective coatings with an absorptivity rating up to 0.96 providing one of the highest efficiens in the industry. Rugged, powder-coated, extruded aluminum construction gives decades of trouble-free service, while our low-profile and simple mounting system make an attractive installation on your roof. FEATURES • Active indirect water heating with Drain-back technology • Eliminates both freezing and overheating concerns • Same narrow footprint as a standard 80 or 120 gallon water heater • Electric element for back-up heat if needed • Includes a dual-use flow meter and sight-glass • Includes programmable electronic controller with direct-read tank • Uses Solar Energy, Inc. glazed thermal collectors • Certified by the Florida Solar Energy Center and Solar Ratings |
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