Retrofit Program: Custom Stream
A tailored path to energy savings with incentives based on the operating conditions of your business.
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Incentive rates of
$1,800/kW or $0.20/kWh
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Get up to
50% of eligible project costs covered
Get your project started by contacting us, or go to the Retrofit portal to log in or sign up.
About the Custom Stream
The Custom Stream helps businesses fund energy-efficient retrofits that are more complex or may not fit in the Prescriptive Stream.
Incentives
Get up to 50% of eligible project costs covered for larger, more complex energy-efficiency retrofits. For non-lighting measures, the Custom Stream incentive is the greater of $1,800/kW of peak demand savings or $0.20/kWh of energy savings for your project based on actual operating conditions.
Case Study: Compressed Air Project
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Existing case
2 x 100 HP fixed speed compressor
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Efficient case
1 x 75 HP variable speed and 1 x 100 HP fixed speed compressor
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Estimated savings
246,164 kWh and 29.75 kW
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Total project cost
$72,201
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Estimated incentive
$36,101 (50% of project cost)
Need a refresher?
Head back to the main Retrofit Program page for how it works, program eligibility and case studies.
Take me thereKey documents
All projects
Program Requirements Version 1.2 – Effective June 30, 2025 | pdf
Participant Agreement Version 1.2 – Effective June 30, 2025 | pdf
Participant Confirmation Form: Equipment Disposal and Decommissioning Version 1.1 – Effective April 8, 2021 | docx
Custom Project Worksheet Version 2.0 – Effective June 30, 2025 | xlsx
Optional worksheets
Compressed Air Version 2.0 – Effective June 30, 2025 | xlsx
Unitary Air Conditioning (AC) Version 2.0 – Effective June 30, 2025 | xlsx
Variable Speed Drive (VSD) Compressed Air Version 2.0 – Effective June 30, 2025 | xlsx
Variable Speed Drive (VSD) Fan Version 2.0 – Effective June 30, 2025 | xlsx
Variable Speed Drive (VSD) Pump Version 2.0 – Effective June 30, 2025 | xlsx
Looking for a document from a previous program offering? Visit the document archive page.
Guides for Custom Stream
Technical User Guide for Engineered Worksheets
Technical User Guide Appendix A – Example of completed engineered worksheets
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Legal Disclaimer for Retrofit Application Portal
Attention to Program Participants (Including Applicants and Applicant Representatives): This system is owned and operated by the IESO. As a registered Program Participant, you have a unique and confidential User Account and Password to access this system and you agree to maintain their confidentiality. You specifically agree that you are exclusively responsible for all access to and any activity on this system that occurs through the use of your User Account and Password. If you become aware of any unauthorized use of your User Account or Password, you agree to immediately notify the IESO. The IESO is not liable for any loss or damage arising from any unauthorized access or use of your User Account and Password. As a registered Program Participant you must use this system in accordance with the Program Requirements and the Participant Agreement. If you do not agree with these terms and conditions, immediately advise the IESO and do not login to this system. The IESO reserves the right to restrict or remove access to this system at its sole discretion.