The GkW / MRSWA Project is a 2010 LMOP Project of the Year Award Winner!
- Location: Christiansburg, Virginia
- End User(s): Appalachian Power Company
- Sector(s): Utility
- Landfill(s): Montgomery Regional Solid Waste Authority Landfill
- Landfill Size: 1.3 million tons waste-in-place (2010)
- Project Type: Reciprocating Engine
- Project Size: 340 kilowatts (kW)
- Environmental Benefits: Carbon sequestered annually by nearly 3,100 acres of pine or fir forests, annual greenhouse gas emissions from more than 2,700 passenger vehicles, or carbon dioxide emissions from 33,600 barrels of oil consumed. Annual energy savings equate to powering 200 homes. Estimated emissions reductions of 0.004 million metric tons of carbon equivalents.
- LMOP Partners Involved: Curtis Engine & Equipment, Inc., Green kW Energy, Inc., Joyce Engineering, Inc.
Though the Montgomery Regional Solid Waste Authority (MRSWA) Landfill is closed, it still provides a service to the community. In partnership with Green kW Energy, MRSWA has completed a project to capture the gas generated by the 1.3 million tons of waste in the landfill and convert it into renewable energy.
Green kW Energy specializes in harvesting renewable energy from landfills and wastewater treatment plants, allowing commercial and municipal customers to purchase green energy at rates comparable to conventional power sources. Green kW designed, built, and now operates the landfill gas (LFG) energy facility, which includes one 265-kilowatt generator and one 75-kilowatt generator.
The project team took novel steps to reduce project costs. For example, it obtained new equipment (gas compressor, solenoid gas valves, pressure regulators, high amperage circuit breakers, and heat exchanger) on eBay at costs significantly lower than the manufacturer recommended prices. The team kept processes as simple as possible, enabling it to locally obtain many of the skills and materials required to build, operate, and maintain the project. In addition, by maintaining a versatile and efficient project team and focusing on project functionality and aesthetics, the team built and operates a financially viable LFG energy project at a smaller site.
The 53-acre landfill will generate an estimated 160,000 kilowatt-hours of green electricity per month, some of which will power MRSWA’s administrative offices and a recycling center. Excess power will be sold to Appalachian Power Company. Part of the revenue from the sale of the energy will go to MRSWA, generating between $10,000 and $15,000 for green education programs. Further revenue will be derived from the sale of carbon credits and renewable energy credits.
The closed landfill is now a community asset contributing to cleaner air and generating renewable energy. —Alan Cummins, Executive Director, Montgomery Regional Solid Waste Authority