Serving the community is of utmost importance, however, due to the financial effects caused by COVID-19, we are unable to process unsolicited requests for funding at this time. In addition, the Local Entity grant application process is currently closed.

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Custom Energy Solutions Program

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Add value to your business through energy efficiency

March 24, 2020 - As the coronavirus pandemic continues to evolve, IID remains committed to the health and safety of its customers and employees. We will continue to process rebate requests; however, there may be potential delays due to changing circumstances that may arise as this situation unfolds. We would like to assure you that service remains our priority and the staff of IID recognizes the importance of your rebates and will work to get them to you as quickly as possible.

About CESPcesp

The goal with all energy-saving measures is to improve the efficiency of the customer’s business facilities, but the added benefit is increasing value to your business. IID’s 2020 Custom Energy Solutions Program is designed to promote energy efficiency by offering financial incentives to commercial customers who install energy efficient equipment and/or integrate energy efficiency design into their facilities. Encompassing major renovation and new construction projects, the CESP is now more robust than ever.

Efficiency Requirements

Qualifying measures must retrofit, replace or upgrade old equipment with new, energy efficient technologies that exceed the applicable Title 24 energy efficiency requirements as established by the California Energy Commission or current industry standards using IID-approved project baselines (if Title 24 standards are not applicable).

Financial Incentives

IID’s Custom Energy Solutions Program offers two overarching strategies for integrating energy efficiency into your business: Custom Energy Solutions offers incentives for the amount of energy saved for process improvements and the New Construction alternative provides energy efficiency design assistance and enables a whole building or systems approach in acquiring efficiency incentives. Both alternatives provide the technical expertise to help you with your energy decisions.

Financial incentives for the CESP approach are based on annual energy savings and are intended for the customer’s use in the purchase and installation of qualifying lighting, refrigeration, air conditioning, food service, agricultural and/or control equipment:

Exterior Lighting: Off-site, Public Spaces, Parking Lots, Landscaping, etc. $0.03/kWh
Interior Lighting: Office Space, Production Line, etc. $0.11/kWh
Process Loads $0.18/kWh
HVAC/Refrigeration $0.25/kWh

The New Construction Energy Efficiency Approach offers calculated or derived incentives based on the expected performance of a system or group of measures for which the energy savings are gained based on current and proposed building energy use simulations.

NCEE Approach incentive rate Maximum ANNUAL incentive

Whole Building Approach

Must Exceed Title 24 Standards by 10%

$0.08 / kWh $150,000

Systems Approach

Lighting, Process and/or HVAC Systems

CESP Guidelines Apply $50,000

*CESP will not pay incentives for the installation of incandescent, halogen, mercury vapor, probe-start metal halide, T-12 linear fluorescent or other outdated technologies when more efficient options are available. All products installed in exterior locations must be approved for outdoor use by the manufacturer. Existing fixtures must be operational in order to qualify for replacement incentives.


This highly effective energy efficiency program is available to commercial customers located within IID’s service area. Qualifying customers should apply for a preliminary energy analysis to determine eligibility. For more information regarding the program, including incentives, please refer to the program guidelines.

2020 Program Forms

Program Contact

For additional information about the program, please contact IID at:

Funding Availability

All incentives are offered on a first-come, first-served basis. Rebate funding is limited and remains in effect until program funding is exhausted or program is discontinued.

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