Ontario’s Save on Energy programs pay part of the cost of energy upgrades at wastewater plants, up to half of eligible costs under the Retrofit program. The application has to go in before the owner commits to buy.
For a pump or blower that runs most of the year, energy and maintenance usually cost more than the equipment. Ontario’s asset management regulation now requires municipalities to plan ten years of lifecycle costs.
A council can find capital for a treatment plant. Keeping it legally staffed, every shift, for the life of the plant, is the harder problem, and Ontario’s licensing rules set the limits.
Aeration is 45 to 75 percent of what a treatment plant spends on power. The efficiency you were quoted is a clean-water number, and the gap between that and your tank is where the money goes.
Five acronyms, two questions. Where the biology lives, and how the solids get separated. Get the second one wrong and you are comparing a complete plant against half of one.
Canada’s federal effluent standards come down to four numbers and one fish test. They never name a technology, and that omission is the most commercially useful thing about them.
Canada reopened transitional authorizations in June 2024 and removed the deadline to apply. Communities that missed the 2014 window now have a route back, and continuous systems under 2,500 m³/day gain real monitoring relief.