Renewable Energy

Solar Photovoltaic

Solar photovoltaic (PV) systems can be a great option for businesses and government entities to use clean electricity to power your facilities. Offering attractive returns on investment, this technology is also supported by a variety of rebates and incentives, depending on the location and type of facility.

Nexamp's experienced solar PV project managers are adept at working with both private and public entities: we have a deep understanding of solar PV design and construction, financial modeling, and public procurement processes.

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Geothermal

For business and government, geothermal heating & cooling systems offer a great opportunity to harness the constant moderate temperature of the earth to cost-effectively and cleanly heat and cool your facilities. Nexamp's trained and certified geothermal system integrators make the process simple for new or existing buildings.

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Solar Thermal

Solar thermal systems are the most efficient and cost-effective technology for heating hot water with solar energy. Many businesses and municipal buildings -- hotels, restaurants, gymnasiums, aquatic centers, and schools -- use extensive amounts of hot water for their operations. Nexamp’s solar thermal solutions pre-heat hot water for operations, thereby offsetting the amount of fuel that must be purchased from the utility. These systems have been successfully used for decades to heat domestic hot water and swimming pools, as well as for other specialty applications. Solar thermal systems can be integrated in northern and southern latitudes for year-round use, even in below-freezing conditions.

A solar thermal system consists of dozens of solar collectors, a glycol loop with a pump, and a heat exchanger.  Each collector measures approximately four feet by eight feet in size and is protected by an aluminum frame and tempered safety glass. The collectors are designed to withstand extremely harsh weather conditions, including high winds and hail. The glycol loop contains propylene glycol, a non-toxic heat transfer fluid, which cycles between the collectors and a heat exchanger within the building. A controller monitors solar resources, pumping the fluid only when the system is generating heat. The heat in the fluid is transferred to the hot water via a heat exchanger. That exchanger is often part of a solar storage tank that acts as a “battery” for holding solar heat until it is ready to be used by the building.

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Wind Power

Facilities located in windy areas, especially near the coast or in mountainous regions, may benefit from wind power. Wind turbine generators harvest wind energy day and night, offsetting the amount of power that must be purchased from a utility. Adequate wind resources and zoning restrictions are critical considerations when siting wind turbines.

Wind turbines vary in size, from light applications that generate enough power for a typical home or farm to large-scale generators that provide power for a commercial building or community. Smaller-scale systems typically have blades 15 to 25 feet in diameter set atop a 100-foot tower. Larger systems can have rotors with blades 200+ in diameter and stand over 400 feet above ground. Much like photovoltaic systems , onsite wind turbines interconnect directly with the building’s main electrical system and may be net metered.

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Small Hydro

Hydro generators can be used by facilities adjacent to a steadily flowing water source. These generators require a pressure head, often supplied by a dam, to power generators.  Small hydro systems, much like wind systems, work both day and night. Small hydro systems have been used for over a century to produce electricity. Modern generators are efficiently sized to integrate into flood management systems, and either connect to a facility’s electrical distribution system, or act as stand-alone power sources in emergencies.

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Biomass Combined Heat and Power

Biomass combined heat and power systems (also known as cogeneration) generate electricity and/or thermal energy from a single integrated system using a range of biomass fuels from solid feedstock to biomass derived gases.  The thermal energy can be used for heating or cooling. Because biomass CHP systems can use close loop biomass and reuse the heat that would otherwise be wasted by decentralized power plants, CHP can be very cost-effective, efficient, and result in a much lower carbon footprint than non-CHP and non biomass CHP systems.

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