Changes include:
In addition, effective immediately, the Prescriptive Solar PV Distributed Energy Resources worksheet and measure have been updated for savings accuracy. The worksheet remains mandatory; applicants will now complete new fields (tilt, orientation and location) and enter outputs from the completed worksheet into the measure in the Retrofit portal when applying.
Compared to the Prescriptive stream, the Custom stream accommodates a wider range of project types and captures electricity savings based on actual operating conditions. Non-lighting measures will receive an increased incentive rate of $1,800/kW or $0.20/kWh, whichever is greater. Incentives continue to be capped at 50 percent of eligible project costs.
All measures except for horticultural lighting, horticultural lighting controls, network lighting controls, solar PV distributed energy resources and industrial energy management information system measures will be eligible for Custom rates. Note that as of June 30, Custom incentives for specialty lighting, horticultural lighting, horticultural lighting controls, and network lighting controls will no longer be offered.
Due to this rate increase, a measurement and verification plan will be required for those Custom projects with an estimated incentive of at least $120,000 (an increase from the current $80,000 incentive requirement). Additionally, additional engineering calculations will be required for those Custom projects with an estimated incentive of at least $15,000 (an increase from the current $10,000 incentive requirement).
Note that any applications that have been pre-approved before June 30, 2025 will retain the pre-approved incentive rates. Participants with a pre-approved application cannot cancel and reapply for the new incentives.
Retrofit regional adders are designed to encourage further adoption of energy-efficiency upgrades through the program to assist in reducing demand for transmission assets in constrained areas.
Retrofit regional adders, which currently offer double the standard incentive for Prescriptive measures, will be expanded to Custom measures. The Custom adders will enable applicants to receive double the new standard incentive rates of $0.20/kWh and $1,800/kW, up to 50 percent of the eligible costs, for projects implemented in areas with capacity constraints.
In addition, the areas qualifying for regional adders will be updated to reflect the latest areas with forecasted electricity constraints conducted by the IESO.
Most measures in these areas will be eligible for double the incentive, except for: Solar PV distributed energy resources, horticultural lighting, horticultural lighting controls, and the industrial energy management information system (EMIS) measures, which are not eligible for regional adders.
Update | Areas |
---|---|
New areas qualifying for regional adders |
Greater Windsor Area: N0P, N0R, N85, N8H, N8L, N8M, N8N, N8P, N8R, N8S, N8T, N8V, N8W, N8X, N8Y, N9A, N9B, N9C, N9E, N9G, N9H, N9J, N9K, N9V, N9Y Brant: N3L, N3P, N3R, N3S, N3T, N3V Caledonia-Norfolk: L9G, N0A, N0E, N3W, N3Y, N4B Woodstock: N0J, N4S, N4T, N4V, N5C Ramore: P0K, P0M, P0N Ottawa: K2K, K2L, K2M, K2S, K2T, K2V, K2W Niagara: L0R (coverage for all postal codes in L0R) |
Removal of existing area qualifying for regional adder; need no longer forecasted |
Southern Huron Perth: N0L, N0M, N4X, N0K Applications submitted before June 30, 2025 remain eligible for the Prescriptive adder. |
The following new Prescriptive measures for data centre/computer rooms will be offered on June 30th to add to the Prescriptive Computer Room Air Conditioning (CRAC) measure that became available in January 2025. The new ENERGY STAR®-certified computer servers, computer server virtualization, ENERGY STAR®-certified uninterruptible power supply measures will be eligible for existing buildings that upgrade their existing equipment.
Prescriptive Measure | Description | Incentive |
---|---|---|
Computer Server (ENERGY STAR® Certified) |
Replace an existing server with an ENERGY STAR®-certified server |
$200 per ENERGY STAR®-certified server |
Computer Server Virtualization |
Virtualization divides a single physical server into multiple unique virtual servers. This consolidation allows for the removal of excess, underutilized physical servers. |
$200 per server removed |
Uninterruptible Power Supply (ENERGY STAR® Certified) |
Replace an existing UPS with an ENERGY STAR®-certified UPS |
Up to $30 per ENERGY STAR®-certified UPS |
The Prescriptive greenhouse lighting and advanced greenhouse lighting control measures will be updated to align more closely with the energy and demand savings achieved.
The incentive rates for the Prescriptive vegetable greenhouse LED grow lights and horticultural inter-lighting for vertical farming measures for new construction will be updated to reflect the expected electricity savings for these measures. The incentives for other greenhouse measures will remain the same. Worksheets will be updated to reflect new savings and rates.
Applicants of the Prescriptive vegetable greenhouse LED grow lights will be required to complete and submit a new mandatory worksheet containing new fields (wattage and photosynthetic photon efficacy of the efficient case) and enter the outputs from the completed worksheet into the measure in the Retrofit portal when applying.
Prescriptive Measure | Measure Updates |
---|---|
Vegetable Greenhouse LED Grow Lights |
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Horticulture Interlighting |
This measure will be split into two categories: inter-lighting excluding vertical farming, and inter-lighting for vertical farming; the assumed base case will be updated for each category. Inter-lighting excluding vertical farming:
Inter-lighting for vertical farming:
|
The savings assumptions for the Prescriptive network lighting controls (NLC) measure will be updated for improved accuracy. The worksheet will be updated to reflect new savings.
In addition, the NLC measure will be categorized as either of the following two types to improve ease of application, with the incentives for both types remaining at the current $0.35/kWh rate:
The Prescriptive DCV for interior conditioned spaces measure currently provides an incentive based on the square footage of the interior space served by a DCV system.
To make it easier to apply for this measure, the incentive will be updated to be $27 per ton of cooling provided by the rooftop units being controlled, using an approach that links the incentive to the cooling equipment rather than the number of DCV systems and square footage of conditioned space.
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