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Data sources
The data used to create this interactive web application is from the following sources:
- Newfoundland
- New Brunswick
- Nova Scotia
- Prince Edward Island
- Prince Edward Island Electricity Data.Opens in a new window Load and Generation Archive
- Quebec
- Ontario
- Note: the IESO uses the "Hour Ending" naming convention for the hours in a day. For example, Hour 1 is from 12 am. to 1 am., Hour 2 is from 1 am. to 2 am. Hours 1-24 are the hours from midnight one day through midnight the next day. Eastern Standard Time is used year round.
- Independent Electricity System Operator (IESO). Data DirectoryOpens in a new window - Generator Output and Capability, Hourly Ontario Energy Price (HOEP), Intertie Flows, and Ontario and Market Demand
- Independent Electricity System Operator (IESO). Industrial Load By Sector ReportOpens in a new window
- Saskatchewan
- Alberta
- British Columbia
- BC Hydro. Balancing Authority Load DataOpens in a new window - Current Hourly
- BC Hydro. Actual Flow DataOpens in a new window - Real-Time Net Scheduled Interchange (RNSI)
- Yukon
Variable data dictionary
Newfoundland
- Demand (DEMAND)
- Demand is the requirement for electricity needed by consumers within a specific market or region over a certain period of time. Oftentimes expressed as a rate of total electric energy used, including energy to generate electricity, at a given instant or averaged over any designated interval of time.
Prince Edward Island
- Import cables (IMPORT_CABLES)
- Submarine or underground power cables used to import electricity from one region or country to another. In PEI, import cables are used to transmit electricity between provinces by four subsea cables under the Northumberland Strait.
- On-island load (ON_ISL_LOAD)
- The amount of electricity required to power lights, motors, appliances, and other uses of electric energy in PEI. Electric load encompasses the total power requirement for end-use devices or customers within an electric system. This includes the power needs of specific electrical components or portions of circuits that consume electricity. Electric load represents the electricity usage at a given moment.
- On-island wind generation (ON_ISL_WIND)
- Wind's kinetic energy turns the propeller-like blades of a turbine around a rotor which spins a generator to produce wind power. A wind farm refers to a collection of wind turbines interconnected to a common utility system of transformers, distribution lines, and a substation that injects energy into the electric grid.
- Total on-island fossil fuel generation (ON_ISL_FOSSIL)
- The amount of electricity being generated from fossil fuel fired equipment. Typically, this generation is only required when there is an interruption of supply from off Island. Electricity generation in which the prime mover is an internal combustion engine, or a turbine rotated by high-pressure steam produced in a boiler or by a hot exhaust gas produced from the burning of fossil fuels (coal, oil, and natural gas).
- Wind as a percent of total load (WIND_PERCENT)
- Wind power as a percent of total load. Electric load is the amount of power required for an electrical component or portion of a circuit that consumes electric power.
- Wind power exported off island (WIND_EXPORT)
- Portion of wind generation that is supplying contracts elsewhere. The actual electricity from this portion of wind generation may stay within PEI but is satisfying a contractual arrangement in another jurisdiction.
- Wind power used on island (WIND_LOCAL)
- Includes only that portion of the Total Wind Generated that is being used to meet purchase agreements of the province's two electrical utilities, Maritime Electric Company, Limited (MECL) and City of Summerside Electric Utility.
Nova Scotia
- Load (LOAD)
- Electric load encompasses the total power requirement for end-use devices or customers within an electric system. This includes the power needs of specific electrical components or portions of circuits that consume electricity. Electric load represents the demand for electricity at a given moment.
- Wind (WIND)
- Sum of the remotely measured output from wind power facilities belonging to both provincial and independent power producers. Wind’s kinetic energy turns the propeller-like blades of a wind turbine around a rotor which spins a generator to produce wind power. A wind farm refers to a collection of wind turbines interconnected to a common utility system of transformers, distribution lines, and a substation that injects energy into the electric grid.
New Brunswick
- 10-minute reserve margin (RM_10)
- The amount of extra generated electricity capacity available beyond what can be used to meet peak demand. A 10-minute reserve margin indicates the capacity of an electric power system to bring electricity online in 10 minutes.
- 10-minute spinning reserve margin (SRM_10)
- The backup electricity-generating capacity that can be activated within 10 minutes to the electric system ready to serve additional electricity demand or unexpected plant failures.
- 30-minute reserve margin (RM_30)
- The amount of extra generated electricity capacity available beyond what can be used to meet peak demand. A 30-minute reserve margin indicates the capacity of an electric power system to bring electricity online in 30 minutes.
- Demand (DEMAND)
- Demand is the requirement for electricity needed by consumers within a specific market or region over a certain period of time. Oftentimes expressed as a rate of total electric energy used, including energy to generate electricity, at a given instant or averaged over any designated interval of time. Demand can be used to calculate total load by subtracting the estimated transmission loses.
- Load (LOAD)
- The average total load in New Brunswick. This is calculated as the NB_DEMAND value minus estimated Transmission losses. Electric load encompasses the total power requirement for end-use devices or customers within an electric system. This includes the power needs of specific electrical components or portions of circuits that consume electricity. Electric load represents the electricity usage at a given moment.
- Net scheduled interchange (NSI)
- The algebraic sum of all interchange schedules between interconnected electrical systems or balancing authorities over a specified period. It represents the net balance, indicating whether there is a surplus (positive NSI) or deficit (negative NSI) in the exchange of electricity between regions or entities.
Quebec
- Demand (DEMAND)
- Demand is the requirement for electricity needed by consumers within a specific market or region over a certain period of time. Oftentimes expressed as a rate of total electric energy used, including energy to generate electricity, at a given instant or averaged over any designated interval of time.
- Hydro (HYDRO)
- Hydro electricity is a form of renewable energy that captures the kinetic energy in flowing or falling water to generate electricity. This encompasses both large-scale reservoir hydro and smaller run-of-river hydro systems, utilizing the natural movement of water to drive a turbine generator. In the context of Hydro-Québec, hydro electricity is measured as the sum of remotely measured output from all generating stations, including those under Hydro‑Québec's management and those from other electricity suppliers with supply contracts.
- Other (OTHER)
- Sum of the estimated output from facilities belonging to independent power producers using different sources (biomass, biogas, or hydropower), from whom Hydro‑Québec can purchase some or all of the output.
- Solar (SOLAR)
- Sum of the remotely measured output from Hydro‑Québec's solar power generating systems. Solar electricity is the conversion of sunlight into electrical energy either through photovoltaic (PV) panels or through mirrors that concentrate solar radiation. In Canadian context, solar power, by and large, refers to electricity generated by photovoltaics.
- Thermal (THERMAL)
- The remotely measured output from Bécancour Cogeneration Plant, fueled by natural gas. Thermal energy generation refers to the process of producing electricity by harnessing heat energy. Heat is generated to produce steam, which, in turn, drives turbines connected to generators, converting thermal energy into electricity. Various methods and fuels (fossil and/or renewable) can be used to generate heat for thermal energy production.
- Total production (TOTAL_PRODUCTION)
- Total hourly production of primary electricity by all electricity producing sources in Quebec.
- Wind (WIND)
- Sum of the remotely measured output from wind power facilities belonging to independent power producers from whom Hydro‑Québec purchases all output. Wind's kinetic energy turns the propeller-like blades of a wind turbine around a rotor which spins a generator to produce wind power. A wind farm refers to a collection of wind turbines interconnected to a common utility system of transformers, distribution lines, and a substation that injects energy into the electric grid.
Ontario
- Biofuel capability (BIOFUEL_CAPABILITY)
- Maximum potential output of biofuel under current conditions, which includes maximum unit derates and outages for that hour.
- Biofuel output (BIOFUEL_OUTPUT)
- Actual energy production of biofuel. The hourly output is the facility’s five-minute outputs averaged over an hour.
- Directly connected load (DIRECT_CONNECT)
- Represents market participant transmission-connected loads. Note that this variable is not a summation of all sector categories.
- Electric power generation, transmission and distribution w/o LDC (ELEC_POWER)
- This category includes load consumption by industries in sectors categorized under NAICS codes 22111 and 22112 and excludes LDCs. Code 22111 comprises establishments primarily engaged in the generation of bulk electric power, by hydraulic energy, fossil fuels, nuclear energy or other processes. Code 22112 comprises establishments primarily engaged in the transmission, distribution or control of electric power.
- Export (EXPORT)
- Total electricity exports scheduled at each of Ontario's 14 interconnections with neighbouring jurisdictions. The flows of energy are provided on a 5-minute basis, along with hourly averages. Data are provided on an hourly basis. At the end of every hour, an hourly summary is provided with the scheduled export.
- Flow (FLOW)
- Total flows of energy between the Independent Electricity Market Operator (IMO) controlled grid and each intertie zone. The flows of energy are provided on a 5-minute basis, along with hourly averages. The schedules of energy are provided on an hourly basis; At the end of every hour, an hourly summary is provided with the flow of energy for the hour and for each intertie zone.
- Gas capability (GAS_CAPABILITY)
- Maximum potential output of natural gas under current conditions, which includes maximum unit derates and outages for that hour.
- Gas output (GAS_OUTPUT)
- Actual energy production of natural gas. The hourly output is the facility’s five-minute outputs averaged over an hour.
- Hourly Ontario energy price (HOEP)
- In the IESO-administered market, the Hourly Ontario Energy Price (HOEP) is charged to local distribution companies (LDCs), other non-dispatchable loads and paid to self-scheduling generators. Businesses that use more than 250,000 kWh a year pay the hourly price. The HOEP is also the basis for regulated rates charged to residential and small business customers. The HOEP values are reported as $/MWh.
- Hydro capability (HYDRO_CAPABILITY)
- Maximum potential output of hydroelectricity under current conditions, which includes maximum unit derates and outages for that hour.
- Hydro output (HYDRO_OUTPUT)
- Actual energy production of hydroelectricity. The hourly output is the facility’s five-minute outputs averaged over an hour.
- Import (IMPORT)
- Total electricity imports scheduled at each of Ontario's 14 interconnections with neighbouring jurisdictions. The flows of energy are provided on a 5-minute basis, along with hourly averages. Data are provided on an hourly basis. At the end of every hour, an hourly summary is provided with the scheduled import.
- Iron and steel mills and ferro-alloy manufacturing (IRON_STEEL)
- Includes load consumption by industries categorized under NAICS code 3311 in the IESO-administered markets. This industry group comprises establishments primarily engaged in smelting iron ore and steel scrap to produce pig iron in molten or solid form; converting pig iron into steel by the removal, through combustion in furnaces, of the carbon in the iron.
- Local distribution companies (LDC)
- Includes load consumption by industries categorized under NAICS code 22112, defined as an LDC. Non-market participant LDCs are excluded from this variable. This industry comprises establishments primarily engaged in the transmission, distribution or control of electric power.
- Manufacturing (MANU_FACTR)
- This category includes load consumption by industries in the manufacturing sector and includes those categorized under NAICS codes 31XX through 33XX and excludes other manufacturing sectors itemized in this report (e.g., Iron and steel mills and ferro-alloy manufacturing; Motor vehicle manufacturing etc.).
- Market demand (MARKET_DEMAND)
- The requirement for electricity needed by consumers within a specific market or region over a certain period of time. Ontario market demand represents the total electricity consumption by residential, commercial, industrial, and institutional users within Ontario's borders. Oftentimes expressed as a rate of total electric energy used, including energy to generate electricity, at a given instant or averaged over any designated interval of time.
- Metal ore mining (METAL_ORE)
- Includes load consumption by industries categorized under code 2122 in the IESO-administered markets. This industry group comprises establishments primarily engaged in mining metallic minerals (ores). Also included are establishments engaged in ore dressing and beneficiating operations, whether performed at mills operated in conjunction with the mines served or at mills, such as custom mills, operated separately. These include mills that crush, grind, wash, dry, sinter, calcine or leach ore, or perform gravity separation or flotation operations.
- Motor vehicle manufacturing (MOTOR_VEHICLE)
- Includes load consumption by industries categorized under NAICS code 3361 in the IESO-administered markets. This industry group comprises establishments primarily engaged in manufacturing motor vehicles. Establishments that manufacture chassis and then assemble complete motor vehicles (including truck cab and chassis assemblies) and those that only manufacture motor vehicle chassis are both classified in this industry group.
- Nuclear capability (NUCLEAR_CAPABILITY)
- Maximum potential output of nuclear energy under current conditions, which includes maximum unit derates and outages for that hour.
- Nuclear output (NUCLEAR_OUTPUT)
- Actual energy production of nuclear energy. The hourly output is the facility’s five-minute outputs averaged over an hour.
- Ontario demand (ONTARIO_DEMAND)
- Total Ontario electricity demand = Total Energy + Total Generation Without Offers - Total Exports + Total Off Market +/- Over/Under Generation. The requirement for energy as an input to provide products and/or services. Oftentimes expressed as a rate of total electric energy used, including energy to generate electricity, at a given instant or averaged over any designated interval of time.
- Other industrial consumers (OTHER_INDSTR)
- Includes load consumption by industries categorized under various other NAICS sectors, and excludes the categories itemized here separately as part of other variables (e.g., Metal ore mining; Manufacturing; Electric power generation, Transmission and distribution without LDCs; LDCs etc.).
- Petroleum and coal products manufacturing (PETRO_COAL)
- Includes load consumption by industries categorized under NAICS code 3241 in the IESO-administered markets. This industry group comprises establishments primarily engaged in transforming crude petroleum and coal into intermediate and end products. The dominant process is petroleum refining, which separates crude petroleum into components or fractions through such techniques as cracking and distillation.
- Pulp, paper and paperboard mills (PULP_PAPER)
- Includes load consumption by industries categorized under NAICS code 3221 in the IESO-administered markets. This industry group comprises establishments primarily engaged in manufacturing pulp, paper or paperboard. Establishments that manufacture pulp, paper or paperboard, either alone or in combination with paper converting, are included.
- Solar available capacity (SOLAR_AVAILABLE_CAPACITY)
- Solar available capacity is the maximum potential output of the facility, minus derates and outages within the hour. This does not take into account the current availability of the sun (fuel) - which is reflected in the forecast.
- Solar forecast (SOLAR_FORECAST)
- Solar forecast represents the estimated output for the facility. It is derived from the maximum output of the facility (installed capacity), minus outages and derates, and takes into account the forecasted availability of sunlight. This value provides the best estimation of potential variable generation output. The forecast value is the five-minute supply forecasts averaged over the hour. If this hourly forecast value is unavailable, it will be replaced by the hourly forecast found in the Variable Generation Forecast Summary Report.
- Solar output (SOLAR_OUTPUT)
- Actual energy production of solar energy. The hourly output is the facility’s five-minute outputs averaged over an hour.
- Wind available capacity (SOLAR_AVAILABLE_CAPACITY)
- Wind available capacity is the maximum potential output of the facility, minus derates and outages within the hour. This does not take into account the current availability of wind (fuel) - which is reflected in the forecast.
- Wind forecast (WIND_FORECAST)
- Wind forecast represents the estimated output for the facility. It is derived from the maximum output of the facility (installed capacity), minus outages and derates, and takes into account the forecasted availability of wind. This value provides the best estimation of potential variable generation output. The forecast value is the five-minute supply forecasts averaged over the hour. If this hourly forecast value is unavailable, it will be replaced by the hourly forecast found in the Variable Generation Forecast Summary Report.
- Wind output (WIND_OUTPUT)
- Actual energy production of wind. The hourly output is the facility’s five-minute outputs averaged over an hour.
Saskatchewan
- Coal (COAL)
- Coal is a readily combustible sedimentary rock created by geological processes of carbonized plant matter. The coal electricity generation process involves burning coal to release heat which produces gas, coal tar, and steam. The generated steam then drives turbines connected to generators, converting mechanical energy into electricity.
- Hydro (HYDRO)
- Hydro electricity is a form of renewable energy that captures the kinetic energy in flowing or falling water to generate electricity. This encompasses both large-scale reservoir hydro and smaller run-of-river hydro systems, utilizing the natural movement of water to drive a turbine generator.
- Imports/Exports (IMPORTS_EXPORT)
- The power that is bought from or sold to neighbours, excluding power purchased through contracts.
- Natural gas (NATURAL_GAS)
- Natural gas is a naturally occurring hydrocarbon composed primarily of methane, though it may also contain varying amounts of natural gas liquids (ethane, propane, butane and pentane) and non-energy components. Natural gas is used extensively in residential, commercial, industrial and power generation applications.
- Other (OTHER)
- Saskatchewan electricity originating from sources not accounted for in other variables including heat recovery facilities, small independent power producers, power imported from Manitoba, and biomass.
- Power generated (POWER_GENERATED)
- The total amount of power generated, including power purchased through contracts.
- Solar (SOLAR)
- Sum of the remotely measured output from Saskatchewan's solar power generating systems. Solar electricity is the conversion of sunlight into electrical energy either through photovoltaic (PV) panels or through mirrors that concentrate solar radiation. In Canadian context, solar power, by and large, refers to electricity generated by photovoltaics.
- System demand (SYSTEM_DEMAND)
- Demand is the requirement for electricity needed by consumers within a specific market or region over a certain period of time. Oftentimes expressed as a rate of total electric energy used, including energy to generate electricity, at a given instant or averaged over any designated interval of time.
- Wind (WIND)
- Sum of the remotely measured output from wind power facilities belonging to both provincial and independent power producers. Wind’s kinetic energy turns the propeller-like blades of a wind turbine around a rotor which spins a generator to produce wind power. A wind farm refers to a collection of wind turbines interconnected to a common utility system of transformers, distribution lines, and a substation that injects energy into the electric grid.
Alberta
- Alberta pool price (POOL_PRICE)
- The hourly real-time market price of a megawatt hour of electricity in Alberta (i.e. the simple average of the system marginal price over the sixty minutes in a settlement interval).The Alberta Electric System Operator (AESO) establishes the pool price by monitoring and matching the supply offers and demand bids between generators and consumers. This price is then used to calculate payments to suppliers and charges to consumers.
- Coal (COAL) - discontinued Nov. 18, 2024
- Coal is a readily combustible sedimentary rock created by geological processes of carbonized plant matter. The coal electricity generation process involves burning coal to release heat which produces gas, coal tar, and steam. The generated steam then drives turbines connected to generators, converting mechanical energy into electricity.
- Cogeneration (COGENERATION)
- Electricity generated from natural gas plants that generate combined heat and power from a single fuel source. By making use of heat that would otherwise be wasted, cogeneration increases energy efficiency. This is one of four types of gas generation reported in Alberta (cogeneration, combined cycle, gas fired steam, and simple cycle).
- Combined cycle (COMBINED_CYCLE)
- Electricity generated from natural gas plants that combine a simple cycle gas plant with a second steam engine that uses the Rankine cycle. This is one of four types of gas generation reported in Alberta (cogeneration, combined cycle, gas fired steam, and simple cycle).
- Dual fuel (DUAL_FUEL) - discontinued Nov. 18, 2024
- A dual fuel generator is a type of power generator that can operate on two different types of fuel, such as gasoline and propane or natural gas. Composed of at least two separate fuel systems that inject each fuel simultaneously into the engine combustion chamber. This allows for flexibility based on fuel availability, cost, or specific needs.
- Gas (GAS) - discontinued Nov. 18, 2024
- Fossil fuels generate most of Alberta's electricity with various sources of gas generation, such as natural gas, refinery gas, synthetic gas, and other combustible gasses.
- Gas fired steam (GAS_FIRED_STEAM)
- Electricity generated from natural gas plants that use steam turbines. This is one of four types of gas generation reported in Alberta (cogeneration, combined cycle, gas fired steam, and simple cycle).
- Hydro (HYDRO)
- Hydro electricity is a form of renewable energy that captures the kinetic energy of flowing or falling water to generate electricity. This encompasses both large-scale reservoir hydro and smaller run-of-river hydro systems, utilizing the natural movement of water to drive a turbine generator.
- Internal load (INTERNAL_LOAD)
- Electric load encompasses the total power requirement for end-use devices or customers within an electric system. This includes the power needs of specific electrical components or portions of circuits that consume electricity. Electric load represents the electricity usage at a given moment.
- Net actual interchange (NET_ACTUAL_INTERCHANGE)
- The difference between the amount of electricity two physically adjacent Balancing Authority areas plan to import and export within the same interconnection. It reflects the net balance, signifying whether there is a surplus (positive net actual interchange) or a deficit (negative net actual interchange) in the actual flow of electric power over a specified period. It helps manage the flow of electricity between regions to keep the system stable and balanced.
- Net scheduled interchange (NSI)
- The algebraic sum of all interchange transactions, trades, and transfers between interconnected electrical systems or balancing authorities over a specified period. It represents the net balance, indicating whether there is a surplus (positive NSI) or deficit (negative NSI) in the exchange of electricity between regions or entities.
- Other (OTHER)
- Alberta electricity originating from sources not accounted for in other variables including biomass, fuel cells, geothermal heat, waste, and wood.
- Simple cycle (SIMPLE_CYCLE)
- Electricity generated from simple cycle natural gas plants, which operate by propelling hot gas through a turbine. Waste heat is not supplied to another external heat engine, so this type of generation is typically used to meet peaking power needs on the electrical grid. This is one of four types of gas generation reported in Alberta (cogeneration, combined cycle, gas fired steam, and simple cycle).
- Solar (SOLAR)
- Sum of the remotely measured output from Alberta's solar power generating systems. Solar electricity is the conversion of sunlight into electrical energy either through photovoltaic (PV) panels or through mirrors that concentrate solar radiation. In Canadian context, solar power, by and large, refers to electricity generated by photovoltaics.
- System marginal price (SYSTEM_MARGINAL_PRICE)
- System marginal price (SMP) represents the price of electric energy in each minute. During normal operating conditions, SMP is defined as the offer price of the most expensive offer block which would be dispatched to meet one additional MW of demand, excluding imports and exports, in each minute. The simple average of the system marginal price over the 60 minutes in a settlement interval is the Pool Price. A new SMP is only published when it changes. When supply shortfall conditions require system controllers to shed firm load during Energy Emergency Alert-3 events, SMP is set at $1000/MWh. For generation supply surplus events, price is set at $0/MWh. When the ISO declares a state of limited market operations, the system marginal price is determined based on dispatches from the most current and reasonably accurate merit orders available to the ISO.
- Total net generation (TOTAL_NET_GENERATION)
- The total process of producing electrical energy involves transforming various types of energy. This is calculated by the gross generation, which is the total amount of electricity generated, subtracting the energy consumed at the generating station(s) for station service, auxiliaries, or personal use.
- Wind (WIND)
- Sum of the remotely measured output from wind power facilities belonging to independent power producers. Wind's kinetic energy turns the propeller-like blades of a wind turbine around a rotor which spins a generator to produce wind power. A wind farm refers to a collection of wind turbines interconnected to a common utility system of transformers, distribution lines, and a substation that injects energy into the electric grid.
British Columbia
- Load (LOAD)
- Hourly control area load. Electric load encompasses the total power requirement for end-use devices or customers within an electric system. This includes the power needs of specific electrical components or portions of circuits that consume electricity. Electric load represents the electricity usage at a given moment.
- Net scheduled interchange (NSI)
- The algebraic sum of all interchange schedules between interconnected electrical systems or balancing authorities over a specified period. It represents the net balance, indicating whether there is a surplus (positive NSI) or deficit (negative NSI) in the exchange of electricity between regions or entities. The BC NSI includes the transfer of energy of each of the BC to US and BC to Alberta interties.
Yukon
- Hydro (HYDRO)
- Hydro electricity is a form of renewable energy that captures the kinetic energy in flowing or falling water to generate electricity. This encompasses both large-scale reservoir hydro and smaller run-of-river hydro systems, utilizing the natural movement of water to drive a turbine generator.
- Thermal (THERMAL)
- Thermal energy generation refers to the process of producing electricity by harnessing heat energy. Heat is generated to produce steam, which, in turn, drives turbines connected to generators, converting thermal energy into electricity. Various methods and fuels (fossil and/or renewable) can be used to generate heat for thermal energy production.
- Total load (TOTAL)
- Electric load encompasses the total power requirement for end-use devices or customers within an electric system. This includes the power needs of specific electrical components or portions of circuits that consume electricity. Electric load represents the electricity usage at a given moment.