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Latest Pictures of the Huckabay Ridge Facility (updated December 2007):
A model for future biogas facilities,
Huckabay Ridge provides renewable natural
gas directly to the pipeline
Environmental Power’s Huckabay Ridge
is the largest renewable natural gas
plant in North America, if not the world.
Huckabay Ridge generates methane-rich biogas
from manure and other agricultural waste,
conditions it to natural gas standards and
distributes it through a commercial pipeline.
The purified biogas, called RNG®, is generated
by Environmental Power’s subsidiary, Microgy,
and is a branded, renewable, pipeline quality
methane product.
The gas produced by Huckabay will be
shipped via the Enterprise natural gas pipeline
to the Lower Colorado River Authority, which
has agreed to purchase the RNG® output of up
to 2,000 mmbtu per day through September
2008, pursuant to a purchase agreement.
Beginning October 2008, the plant output will be sold to Pacific Gas & Electric under a 10 year
agreement.
Huckabay Ridge consists of eight anaerobic digesters that extract methane-rich biogas from waste
to produce energy that is cost-effective, clean, reliable and domestic—and it also helps farms and
businesses responsibly manage the wastes they generate.
Biogas is produced by bacteria in manure that consume organic material in the absence of oxygen.
By adding substrate—such as waste grease or food processing by-products—bacteria become more
active and Environmental Power substantially boosts gas production. The captured biogas is a
versatile energy source that can be used to produce heat, power generators, or produce RNG®.
Anaerobic digestion changes the composition of manure, creating fertilizer and other useful
products. This processed manure helps farmers comply with nutrient management plans and reduces
odor and water quality issues.