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In 2014 BC had the largest volume of electricity imports in Canada (9700 Mwh), from the Western Interconnection in the US which is 60% fossil fueled. [57] [58] BC Hydro typically imports power during off-peak hours when thermal plants in the US and Alberta have excess power for sale, then exports hydropower during peak hours when prices are higher.
While the average wholesale pool price on-peak times was approximately CA$70/MWh since 2000, and CA$31/MWh during off peak times, [6] the average price on August 12, 2021, was CA$142/MWh with an average of CA$103.51 for 2021 to date, representing the highest price in 20 years, according to AESO data. [4]
The highest load recorded in Ontario occurred on 1 August 2006, when peak demand for electricity reached 27,005 MW. The highest winter peak demand occurred 13 February 2007, when peak demand was 25,868 MW. Peak demand also varies by the time of day. The daily peak period refers to the time of the day when demand is at its high.
Loch Mhor is used to generate hydro-electric energy at peak demand or in an emergency. Peak demand on an electrical grid is the highest electrical power demand that has occurred over a specified time period (Gönen 2008). Peak demand is typically characterized as annual, daily or seasonal and has the unit of power. [1]
Peak demand management does not necessarily decrease total energy consumption, but could be expected to reduce the need for investments in networks and/or power plants for meeting peak demands. An example is the use of energy storage units to store energy during off-peak hours and discharge them during peak hours. [4]
Ontario’s electricity distribution consists of multiple local distribution companies (LDCs). Hydro One , a publicly-traded company owned in part by the provincial government, is the largest LDC in the province and services approximately 26 percent of all electricity customers in Ontario.
However, as greater penetration from renewable energy sources, like solar, are on a grid the lower cost, electricity is shifted to midday when solar generates the most energy. Time of use (TOU) tariffs can shift electricity consumption out of peak periods, thus helping the grid cope with variable renewable energy. [8] [9]
The unit's lithium-ion batteries charge during off-peak hours and then discharge energy to Toronto Hydro's grid during peak hours. In 2017, Toronto Hydro launched PowerLens®, an online platform allowing customers to view how their homes use electricity so that they can take steps towards conservation and saving.