Renewable Energy Construction

Total Energy Solutions

At Acterra, we know that renewable energy will be an integral part of the world energy mix throughout the 21st century. Our commitment is to help our partners and customers design and implement energy solutions for their unique energy needs.  Acterra works in the following areas of renewable technology:

Wind Energy - Acterra provides wind energy development and construction services.

For over a century, our world has been powered primarily by carbon based fuel. Recently,  concern about global warming and the harmful effects of fuel emissions has created new demand for clean energy, such as wind. As more and more consumers choose who produces their power, the market for renewable resources is forecast to expand at an even greater pace. With a cost of wind energy declining, wind is a low-cost renewable energy source that is less expensive than coal, oil, nuclear and most natural gas-fired generation, and is becoming attractive to utilities and electric cooperatives. 

Solar Energy - Acterra provides solar energy development and construction services.

Photovoltaics - The photovoltaic effect involves the creation of a voltage (or a corresponding electric current) in a material upon exposure to electro-magnetic radiation.  A solar cell is a device that converts the energy of sunlight directly into electricity by the photovoltaic effect.  Photovoltaic technology makes use of the abundant energy in the sun, and it has little impact on our environment. Photovoltaics can be used in a wide range of products, from small consumer items to large commercial solar electric systems.

Solar thermal energy (STE) is a technology for harnessing solar energy for thermal energy (heat). Solar thermal collectors are defined by the USA Energy Information Administration as low-, medium-, or high-temperature collectors. Low temperature collectors are flat plates generally used to heat swimming pools. Medium-temperature collectors are also usually flat plates but are used for creating hot water for residential and commercial use. High temperature collectors concentrate sunlight using mirrors or lenses and are generally used for electric power production.

Biomass Energy & Waste to Energy - Acterra provides biomass energy development and construction services.

Biomass is a renewable energy source because the energy it contains comes from the sun. Through the process of photosynthesis, chlorophyll in plants captures the sun's energy by converting carbon dioxide from the air and water from the ground into carbohydrates, complex compounds composed of carbon, hydrogen, and oxygen.  When these carbohydrates are burned, they turn back into carbon dioxide and water and release the sun's energy they contain. In this way, biomass functions as a sort of natural battery for storing solar energy.

Biogas through Anaerobic Digestion - Biogas production using anaerobic (oxygen free) digestion is a biological treatment process to reduce odor, produce energy and improve the storage and handling characteristics of manure. A biogas production system must be specially designed and requires regular attention by someone familiar with the needs and operation of the digester. Associated manure handling equipment and gas utilization components are also required. The digester does not remove significant nutrients and requires an environmentally responsible manure storage and handling system.

Biomass Gasification - Gasification takes biomass material and heats it to a very high temperature creating synthesis gas or  syngas which can be used as fuel.  The advantage of gasification is that using the syngas is potentially more efficient than direct combustion of the original fuel because it can be combusted at higher temperatures. Syngas may be burned directly in internal combustion engines, used to produce methanol and hydrogen, or converted via the Fischer-Tropsch process into synthetic fuel. Gasification can also begin with materials that are not otherwise useful fuels, such as biomass or organic waste. In addition, the high-temperature combustion refines out corrosive ash elements such as chloride and potassium, allowing clean gas production from otherwise problematic fuels.  

Landfill Gas - Acterra provides LFG development and construction services.

Landfill gas is about 40-60% methane, with the remainder being mostly carbon dioxide (CO2). Landfill gas also contains varying amounts of nitrogen, oxygen, water vapor, sulfur and a hundreds of other contaminants.  Inorganic contaminants like mercury are also known to be present in landfill gas.  LFG can be utilized for power, steam, or used to create other advanced fuels.

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