From the description of your setup, we infer that you are already a Rate DT customer. Rate DT has two prices that apply depending on the outdoor temperature.
In order to maximize your savings under Rate DT with a system that uses electricity as its main source and natural gas as an auxiliary source, it is important to adjust the heating energy source according to the outdoor temperature and the price billed. Considering current natural gas prices, you will get a better deal if your dual-energy heating system runs on electricity when the outdoor temperature is -12°C or warmer, or -15°C or warmer, depending on the region. However, during periods of extreme cold, natural gas heating remains profitable as long as the overall price of natural gas is Under $2,11/m3.
- Equivalence based on Rate DT electricity prices on April 1, 2015, and on a dual-energy system efficiency rate of 75%. If you have a more efficient dual-energy system, the equivalent natural gas price would be higher.
**Given an estimated total cost of natural gas, in February, of $0,53/m3, which includes Rate D1 Gaz Métro delivery charges, as well as supply and C&T ($0,13/m3). In addition, during cold snaps, we recommend reducing your consumption of hot water and your usage of non-essential electrical devices in order to avoid, as much as possible, being billed at the higher Rate DT price.