Category: ⚡ Markets & Operations
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Electricity settlements translate electricity market activity into financial transactions between market participants.
After electricity is produced, dispatched, and consumed, the settlement system calculates the financial obligations of generators, consumers, and other market participants.
The Independent Electricity System Operator (IESO) administers the settlement process, ensuring that all market transactions are accurately calculated and that payments are properly distributed.
Settlements are a critical component of electricity markets because they ensure that market participants are compensated according to market outcomes and system operations.
Market Settlement
The financial process used to calculate charges and payments associated with electricity produced, consumed, or traded in the wholesale electricity market.
Settlement systems reconcile physical electricity flows with market transactions.
⚡ Electricity settlements convert system operations into financial outcomes.
Every megawatt-hour of electricity produced or consumed must be accounted for financially through the settlement system.
Settlement systems calculate financial transactions using data from multiple sources, including:
These calculations determine how much each participant must pay or receive for electricity market activity.
Each market participant maintains a settlement account with the system operator.
These accounts track financial transactions related to:
Settlement statements summarize these transactions for each participant.
Settlement statements provide detailed financial reports that summarize market transactions over a specific period.
These statements typically include:
Market participants review settlement statements to verify the accuracy of financial transactions.
Electricity markets sometimes require uplift payments or adjustments to ensure that certain reliability costs are recovered.
Examples include:
These adjustments ensure that all system costs are appropriately allocated among market participants.
Electricity market settlements are typically performed through a series of settlement cycles.
For example:
These processes ensure that financial calculations remain accurate even as additional system data becomes available.
The settlement system also performs financial clearing functions.
These processes ensure that:
Financial reconciliation helps maintain trust and transparency in the electricity market.
Consider a generator that produces electricity during a high-demand period.
This process ensures that the generator is compensated according to its market participation.
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Ontario Energy Board (OEB)
This topic explains the role of Ontario’s electricity regulator and how it oversees utilities and electricity market participants.
Last Updated: 2026-03-27