Halifax, NS – Nova Scotia Power will begin start-up and testing activities next week as part of the Waste Heat Recovery project at the Tufts Cove Generating Station. During the initial testing period, residents living around Halifax Harbour may notice large steam clouds rising from Dartmouth’s Tufts Cove plant.
Starting next week and continuing during daylight hours for approximately two weeks, project staff will perform tests that involve cycling steam through the new equipment. As a result of this testing, steam releases may be visible at the plant several times per day and may create additional noise near the plant. The project is expected to begin supplying electricity to the provincial grid by late summer.
The Waste Heat Recovery project adds a combined cycle generator to the three thermal generation units and two combustion turbines currently producing electricity at the plant. All five units burn natural gas, which creates 30% less carbon dioxide compared to petroleum. The new generator will recover waste heat from the two natural gas combustion turbines to generate an additional 25 megawatts (MW) of electricity with no additional fuel or emissions. Another 25 MW will be generated through a process known as duct firing that injects gas directly into the waste heat stream from the turbines to increase energy output. The project will produce enough energy to power up to 35,000 homes.
“This is a very exciting project for us because we are always looking for ways to produce cleaner and more efficient energy,” said Dave Pickles, Senior Plant Manager at Tufts Cove. “Waste heat recovery allows us to take cleaner burning natural gas and squeeze more electricity out of it, with minimal additional air emissions.”
“The Waste Heat Recovery project brings great value to our customers by saving on fuel costs, while at the same time advancing our priority of cleaner and more efficient electricity generation,” said Mark Sidebottom, General Manager, Power Production at Nova Scotia Power. “It’s part of our commitment to continued environmental improvement, and we know that’s important to our customers.”
The technology being installed at Tufts Cove is a proven technology used around the world in facilities where heat is produced that would otherwise be wasted. The project is expected to reduce greenhouse gas emissions by roughly 200,000 tonnes per year.
In 2010, natural gas generation at Tufts Cove accounted for 19 percent of the electricity Nova Scotians used, compared to 1 percent in 2004.