Solar Energy Products | Vermont
RES-TEC offers a range of solar energy products to clients throughout Vermont and the surrounding region, including photovoltaic solar systems, wind energy systems, micro-hydro turbines, generators and solar thermal systems.
Photovoltaic or solar electricity is the most common source of renewable power. PV modules are relatively easy to site, have long usable lifetimes, and require little maintenance. Proper site analysis and orientation is critical.
To perform well they need to be mounted (typically ground/pole or rooftop) so that they face within a few degrees of true south at an angle approximately equal to your site latitude.
If you have the right site, wind power can be a fantastic way to generate renewable power. Relatively constant, good speed wind is required for an efficient blade type (horizontal axis wind turbines or HAWTs) wind power installation. Newer vertical axis wind turbines (VAWTs) are not as efficient as HAWTs in good, stable wind environments, but they operate very efficiently in the more turbulent, gusty wind conditions of rural home and small business sites. Vertical axis wind turbines are cheaper, safer and more environmentally friendly than horizontal axis wind turbines. Either way, monitoring and analyzing site-specific wind conditions is critical.
If you have the necessary conditions for hydro power (decent, year-round running water, reasonable vertical drop (or head), hydro power is the most reliable way to generate continuous renewable power. Installation costs can be significantly higher, depending on site conditions, but once installed, electricity generation is continuous, with little down time.
Generators are typically used as a backup energy source to charge your battery bank when your renewable charging sources are not keeping up with your watt hour consumption or when the grid goes down (power failure, rolling blackouts). They are a necessary evil for most independent power producers (off-grid systems) and as a low cost backup for grid-tied systems during power failures. Additionally, generators can be a relatively inexpensive way to limit the size and cost of your main power-producing source (solar, wind, hydro, battery storage size) during the inevitable periods of cloudy days, windless days or drought periods. Generators are typically powered by gasoline, diesel, or natural gas/propane, depending on size and customer requirements. Generator systems can be fully automated or fully manual, to energize and provide power during low-solar or grid failure conditions.
The use of solar energy to heat domestic hot water and space is soaring, along with the cost of fossil fuels. New, more efficient heating technology makes solar even more desirable, cost effective and environmentally friendly, especially under extreme, variable weather conditions. In many areas of the country, the typical homeowner spends over 60% of domestic energy use on heat and hot water.
RES-TEC recommends that all homeowners with a reasonable solar exposure examine the possibility of supplementing their hot water and heating needs with solar thermal energy, reducing costs and dependence on fossil fuels.
Geothermal heat systems are the most energy efficient, environmentally clean and cost effective space conditioning systems available today declared the EPA in the 1970’s. And it’s still true. Conventional residential and light commercial heating and cooling systems are generally fossil fuel and electricity based. As energy prices fluctuate the demand for Geothermal systems is on the rise. Ground Source Heat Pumps (GSHPs) are the most efficient types of geothermal systems and are becoming more common as the costs of energy and equipment maintenance rise. When properly designed and installed they not only reduce energy use but lower maintenance costs and extend equipment life since they have no exposed outdoor equipment.
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