An eye-opening tour of the Lennox plant in Eastern Ontario leads to starting calculations, too
Back in late May and just before the Ontario provincial election, I wrote a “what if” post titled; “If I were Ontario’s new Minister of Energy …” which was suggested how I would undertake to reduce the costs of electricity.
So far, a few of my recommendations have actually happened.
I won’t linger over the enacted or missed ones but I will focus instead on my suggestion that we close the “Lennox oil/gas plant in Napanee/Bath with a capacity of 2,200 MW that is never used.”
I received an invitation to tour the Lennox plant and I accepted! The tour was led by John Hefford, VP Regional Operations-Eastern Region, who has responsibility for not only Lennox but for all the hydro generating facilities located in the eastern part of Ontario, which (including Lennox), totals about 4,800 MW — that’s about 30% of OPG’s total capacity.
Driving toward the Lennox plant one can’t help but notice, in the distance, the industrial wind turbines (IWTs) recently built on Amherst Island (“owl capital” of North America). That project is considered one of the most divisive wind power projects ever awarded a contract by IESO under the McGuinty/Wynne governments.
The tour combined with a takeaway “Overview” of Lennox was truly enlightening. The most noteworthy bits of information picked up were related to the ability of each of the four 525-MW turbines to ramp up quickly from their minimum load point of only 28 MW or 5%. To put that into perspective, the other gas plants operating in Ontario are mainly CCGTs (Combined Cycle Gas Turbines) and they have to idle at minimum loads that are six to 14 times higher.
The ramping load point at Lennox logically translates to much lower emissions than the units added to Ontario’s grid(s) backing up industrial wind turbines (IWT) and solar under the FIT (feed-in-tariff) program.
The other significant difference between the CCGTs and single-cycle Combustion Turbines (CTs) is in respect to idling costs: for Lennox the cost is about $4,200 MW per month versus CCGT generators with costs of $10,000 MW per month to $20,000 MW per month, and CTs which average about $10,000 MW.
Another impressive piece of information picked up on the tour is the ability of the units to operate on either natural gas or residual oil (or both). That means, if a fuel cost spikes due to high demand (e.g., gas in the “Polar Vortex” winter of 2014) Lennox can switch to the other fuel. Lennox was also recently called on when a Pickering nuclear unit was shut down due to the 2018 Lake Ontario algae situation.
IESO forecasted shortfall It appears likely Lennox will be called on to provide the capacity during the shortfall that the IESO projects during the upcoming nuclear refurbishment years. From a ratepayer perspective, it makes sense.
Carbon tax calculations
Completing the tour and driving home led me to the questions of how much Ontario’s ratepayers might have saved if Lennox had been deemed the back-up for wind and solar power generation or had been used to generate electricity instead of handing out high priced 20-year contracts under the FIT program. The first question would take an inordinate amount of research, so I opted for the latter!
A report (IESO prepared?) titled the Ontario Energy Report has a chart showing emissions generated by the electricity sector and the report for year-end 2017 indicated emissions in Ontario were 14 mt* in 2009 and 3 mt in 2017, for a decline of 11 mt in 9 years. The decline was touted by the Wynne government as attributable to renewable energy in the form of wind and solar.
Looking only at the wind power generation and its associated cost in those nine years provides an indication of just how much Ontario’s ratepayers have paid on a per ton basis to achieve that 11 mt drop! According to the IESO, from 2009 to 2017, wind turbines generated 53.1 TWh (terawatt hours) and since we commenced paying for curtailed power (paid for but not used), ratepayers picked up those costs for about 6.9 TWh.
So, the approximate costs of the grid-accepted wind power generation was about $7.2 billion, and for the curtailed generation was another $800 million. That brings the overall costs of the 11 mt reduction to about $8 billion!
The cost of that reduction of 11 mt looking at IWT (generation and curtailed) only and without solar, works out to $655/ton!
Ontario’s ratepayers have obviously done their bit to reduce emissions and will continue to pay more until the wind turbines and those 20-year FIT contracts finally expire.
We don’t need a carbon tax.
P.S. The second in this two-part series about Lennox will follow shortly, covering off how much we might have saved without wind power
*mt denotes “megaton” equal to one million tons.