The Ontario Energy Board allows for three alternative rate-setting methods by electricity distributors: Price Cap Incentive Rate-setting (Price Cap IR), Custom Incentive Rate-setting (Custom IR), and Annual Incentive Rate-setting Index (Annual IR Index).  Grimsby Power Inc. uses the Price Cap Incentive Rate-setting method to apply for rate approval.  This method allows for rate rebasing every five years.  In the rate rebasing year Grimsby Power submits a full Cost of Service application.  In between Cost of Service applications Grimsby Power will apply for a mechanistic increase to distribution rates (an IRM Application).  

IRM Applicaiton 2024

Rate Application - Rate Effective January 1, 2024


IRM Application 2023

Rate Application - Rates Effective January 1, 2023

Tariff of Rates and Charges Effective January 1, 2023

Cost of Service Application January 1, 2022

Grimsby Power has submitted a full Cost of Service application to the Ontario Energy Board with proposed rates effective January 1, 2022.

To view the application and excel models that support the application click here to go to the full application posted on the OEB's website.

Grimsby Power Rates and Charges Effective January 1, 2022


IRM Application 2021 

Rate Application - Rates Effective January 1, 2021

Tariff of Rates and Charges Effective January 1, 2021 


IRM Applicaiton 2020 

Rate Application - Rates Effective January 1, 2020

Tariff of Rates and Charges Effective January 1, 2020




Recent news

You could get a monthly, on-bill credit of $35 or more. The OESP credit amount depends on how many people live in the home and the combined annual household after tax income. Effective March 1, 2024 income eligibility thresholds change making more homes eligible for the credit. Beware of energy scams: Home energy assessments, audits, inspections and home visits are not required to apply for the OESP.  Apply now or learn more at

Check it out! You might qualify for the Ontario Electricity Support Program (OESP)
on Feb 28, 2024

You could get a monthly, on-bill credit of $35 or more ...

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Having Trouble Paying Your Electricity Bill?
on Oct 28, 2022

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Scam Alert
on Jan 27, 2023

Grimsby Power has been notified that individuals representing themselves as a utility responsible for providing power a ...

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2022 Supply Mix
on Apr 11, 2023

The Ministry of Energy is responsible for providing Ontario’s electricity supply mix data for electricity suppliers ...

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Grimsby Power Rates Effective January 1, 2024
on Jan 11, 2024

On August 17, 2023, Grimsby Power filed an IRM application with the Ontario Energy Board (OEB) to change rates effective ...

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New Time of Use, Tiered and Ultra-Low Overnight Prices Effective November 1, 2023
on Jan 8, 2024

The following rates apply to the Electricity line on your bill: Winter Time-of-Use TOU On-Peak 18 ...

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New E-Billing Customer Account Portal
on Jan 5, 2022

Grimsby Power is introducing a new customer account portal ...

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