Summary
Ameresco designed, built, owns, operates and maintains (DBOOM) the largest wastewater treatment biogas-to-renewable natural gas (RNG) facility of its kind in the United States. The wastewater treatment plant (WWTP) is owned by the sub-regional operating group (SROG) member cities: Phoenix, Glendale, Mesa, Scottsdale and Tempe and is operated by the City of Phoenix.
“This innovative partnership allows us to turn waste into resource by converting biogas, a byproduct of wastewater treatment, into renewable energy. This not only benefits our regional economy, but also reduces greenhouse gas emissions. Phoenix has set ambitious sustainability and renewable energy goals, and this kind of public-private partnership will help us get there.”
– Kate Gallego
Mayor, City of Phoenix
20
Year Contract
3 Mile
RNG Pipeline
3,250
Standard Cubic Feet Per Minute Raw Biogas Processing
693,500
Dekatherms Annual RNG Production
Customer Benefits
Through a public-private partnership, Ameresco’s processing plant utilizes a previously untapped energy resource by “cleaning” raw biogas generated at the WWTP into RNG, a carbon-neutral renewable energy commodity.
- Royalty Payments from raw biogas sale
- WWTP operational and maintenance savings
- SROG is expected to reduce the equivalent of 44,671 metric tons of CO2 per year. The green benefit from this carbon reduction is roughly equal to 70,452 cars taken off the road annually.
Services Provided
Using innovative energy solution technology, Ameresco processes raw biogas generated at the WWTP into RNG suitable for injection into the nation’s high-pressure natural gas pipeline. The RNG is sold on the open market as vehicle fuel under the EPA’s Renewable Fuel Standard Program.
- Biogas purchase and site lease agreement
- Design, build, own, operate, maintain wastewater treatment plant
- 3-mile renewable natural gas pipeline
- Interstate pipeline connection
