Walker’s upgrade to the Trail Road Landfill gas collection system saves the City of Ottawa from unnecessary expenditures while reaching environmental goals.
The Trail Road Landfill Gas to Energy Facility, owned through an Ontario-based partnership between Walker, Comcor Environmental and Energy Ottawa Inc., is located at the City of Ottawa’s Trail Road Landfill site that enabled the city to tap into revenues from its existing source of landfill gas while saving on capital costs.
The existing landfill gas collection system at the Trail Road Landfill had routine operating and maintenance costs of $200,000 per year and was anticipating a capital investment of $2 million in upgrades and repairs to keep the system collecting optimal levels of gas. However, by implementing an upgraded landfill gas collection system that added new wells and related collection piping, Walker and its partners helped the city save on these expenditures while also achieving significant environmental benefits.
By collecting and using the landfill gas for renewable energy generation rather than flaring the surplus capacity, the site managed to reduce its greenhouse gas emissions by up to 180,000 tonnes (relative to 1990 levels). In doing so, the facility could generate up to 5 MW of renewable energy and divert the production of 40,000 tonnes of carbon dioxide from fossil fuel derived electricity.
Savings of $200,000 per year
in operating and maintenance costs
5 MW of renewable energy
generated from landfill gas
Reduction of 180,000 tonnes
in greenhouse gas emissions
Until 2007 the Trail Road Landfill collected landfill gas, which is made up primarily of methane (50%) and carbon dioxide (50%), from the existing landfill gas collection system and combusted it in a Ministry of the Environment approved enclosed flare. The flare is now used as a standby unit.
The Trail Road Landfill Gas to Energy Facility takes landfill gas that has been flared and directs it to five (5) Jenbacher JGC320 internal combustion reciprocating engines.
The East Landfill Gas to Energy Facility at Walker’s Niagara Falls landfill site has produced enough green energy from landfill gas to power 1,000 homes per year since 2007.
The landfill gas collection and utilization system at the BraeBen Golf Course—formerly the Britannia Landfill site—has a total generating capacity of 5.5 MW, meaning more green energy for the grid without disrupting the greens.
Walker’s landfill gas supplied as renewable fuel to a neighbouring GM Propulsion Plant makes GM’s St. Catharines facility its greenest propulsion plant globally.
Poo. Power. Profits. Walker helps ZooShare Biogas Plant produce clean, renewable energy from zoo animal waste and food waste.