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Anaerobic Digestion

How does anaerobic digestion work?

Anaerobic digestion is a biological process by which microorganisms convert organic material (such as livestock manure) into biogas, containing methane and carbon dioxide. Biogas produced by this process can be utilized to generate electricity or can be cleaned up and supplied to natural gas lines.
What are the different types of anaerobic digesters?

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Are there financial incentives for anaerobic digestion?

No financial incentives are available at the current time.
Source: Database of State Incentives for Renewables & Efficiency

Is anaerobic digestion right for me?

Anaerobic digestion may be right for you if:

  • Your livestock manure is mixed with a water source such as wastewater
  • Your livestock manure is low in inorganic content such as rocks and soil
  • Your manure feedstock is relatively consistent in content and volume throughout the year
  • The energy source you’ll be replacing (i.e. natural gas or electricity) is expensive
  • You have other needs related to waste management such as odor control

Anaerobic Digestion Decision Tool for Colorado Cattle Operations

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Woody Biomass

What are the different types of wood burning appliances?

There are several different types of wood burning appliances, including stoves, boilers, masonry heaters, and fireplace inserts. There are a variety of EPA-certified wood stoves available with efficiencies up to 83%. Pellet combustion appliances, including stoves, furnaces and boilers, can burn pellets made of wood or other biomass for fuel. Pellet appliances require electricity, whereas wood stoves do not. Outdoor wood boilers are another option, although they are often run inefficiently and emit high quantities of air pollutants. Hydronic pellet boilers burn wood pellets and can be installed either indoors or outdoors. These units generally have a thermal efficiency of 80% or higher. Wood chip boilers are another alternative available for medium to large greenhouses, schools, or businesses.

Masonry heaters include a firebox, a large masonry mass (such as bricks), and long twisting smoke channels that run through the masonry mass. They can reach very high efficiencies and release little air pollution, but they cannot provide heat quickly from a cold start. Traditional, open fireplaces are more for ambiance and should not be considered a heating appliance. High efficiency fireplace inserts, however, can function almost as efficiently as wood stoves.

Source: U.S. Department of Energy

Are there financial incentives for wood energy?

No financial incentives are available at the current time.
Federal Tax Credits for Home Energy

Is wood energy right for me?

Wood energy may be right for you if:

  • You want a heating source that is generally more cost-effective than electricity or propane
  • You have access to a consistent feedstock – this is especially important if considering a pellet stove
  • You are familiar with local building codes and ordinances that may restrict your use of wood heat on certain days
  • You are prepared to pay for a professional installation
  • You are prepared to regularly operate and maintain your wood-burning appliance
  • You have appropriate indoor or outdoor space for storing your wood/pellet feedstock

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Last updated: May 3, 2017 at 10:23 am