Avolta Completes Two Renewable Natural Gas Projects

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Avolta says it has completed two dairy manure to renewable natural gas (RNG) projects at the Butterfield and Milky Way dairies in Arizona. The projects have begun injecting RNG into the Southwest Gas pipeline for distribution. 

Avolta has also partnered with U.S. Gain to distribute the RNG as an ultra-low-carbon transportation fuel in California and other LCFS states, generating both RINs (under the Renewable Fuel Portfolio) and LCFS credits (under the California Air Resources Board).

Using anaerobic digestion, dairy manure is converted into biogas, which is composed mainly of methane and carbon dioxide, and then upgraded to pipeline-quality natural gas using Nacelle Solutions’ biogas upgrading equipment.

In addition to creating hundreds of construction jobs within the community, these two RNG projects have provided the dairies with optimized waste management solutions, new revenue streams and significant carbon emission reductions.

“The dairy industry has seen a lot of change since our family started in the 1620s in Holland,” says farm owner Tommy de Jong.

In running the dairy, de Jong and his sons have focused on sustainability by growing their own crops and minimizing the use of chemical fertilizers through using the manure nutrient management to reduce their overall carbon footprint.

The Butterfield and Milky Way projects are RNG facilities that qualify for investment tax credits (ITC) under the Inflation Reduction Act. By reducing upfront costs for RNG projects to make them cost competitive through an ITC, the projects support the goal of the IRA to accelerate the reduction of carbon emissions in the U.S. by 40% by 2030 and promote a cleaner, more sustainable energy system.

With these RNG projects operational, the dairy farms can achieve measurable results, including:

  • Capturing 99% of the methane produced by 60,000 cows.
  • Delivering over 675,000 MMBTU per year of negative carbon fuel into the California transportation market.
  • Improving flush water quality.
  • Reducing carbon emissions equivalent to removing 8,000 cars from the road annually.
  • Producing enough RNG to power 6,500 homes annually.

“We’re committed to helping Butterfield and Milky Way achieve the lowest carbon footprint possible,” says Avolta co-founder Patrick Graney. “Renewable natural gas and recycled water are just the beginning. We’re also in the process of installing solar to offset power usage as the next step in the journey of delivering complex projects that will have a lasting impact.”

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