Customer Renewable Programs

Battery Bonus

Cash Incentive to Add Energy Storage to an Existing or New Rooftop Solar System

Hawaiian Electric will pay a cash incentive and provide bill credits for customers on Oahu to add energy storage (a battery) to an existing or new rooftop solar system. These perks will help move Hawaii toward its goal of 100% clean energy by 2045 and add more renewable resources to the grid in the short-term when the AES coal-fired plant is retired in September 2022.

The Public Utilities Commission has capped the program at a total 50 megawatts (MW) supplied from storage.

  • Customers accepted in the program for the first 15 MW of committed capacity will receive $850 per kilowatt (kW). (For example, 5 kW would yield a $4,250 payment.) Customer must fulfill the obligation discussed below to receive the full amount.
  • Customers who sign up for the next 15 MW of committed capacity will receive $750 per kW.
  • Customers who sign up for the last 20 MW of committed capacity will receive $500 per kW.

Hawaiian Electric worked with the solar industry to add incentives and make other improvements to the program. Regulators approved the following amendments effective June 1.

  • Customers not in the company's Net Energy Metering Program will receive a fixed monthly bill credit for energy exported to the grid for three years. The credit is an amount equivalent to the respective retail rate for electricity exported during the two-hour period.
  • Customers will receive a $5 per kW monthly peak capacity payment for the 10-year duration of the program. The payment is offered as a bill credit.

Committed capacity is the amount of kW discharged from battery for two hours during the window of 6 – 8:30 p.m. The committed capacity determines the incentive. For example, a 15 kilowatt-hour (kWh) battery can commit 5 kW or 10 kWh over two hours, therefore, the incentive would be $850 x 5 kW= $4,250, if submitted within the first 15 MW group. If weather does not allow for sufficient battery charging there will be no penalty to the customer as long as the battery storage is paired with PV generation with a ratio of at least 1 kW of generation for every 2 kWh of committed capacity.

Customers who wish to participate with an existing solar system and are presently enrolled in a customer energy program (such as Net Energy Metering, Customer Grid Supply, or others) will continue to receive full benefits from these programs. A customer must install a battery of any size and may add new panels as long as the additional PV capacity is not more than twice the battery size. Existing customers are customers that have received Permission to Operate before 7/1/2021.

The owner of the solar-plus-storage system will receive the incentive. That can be the residential or commercial customer owning the system or a company that leases the system to the homeowner or business.

This incentive payment is considered income. Hawaiian Electric will provide participants with tax forms and report information to the IRS and Hawaii Department of Taxation. Hawaiian Electric cannot offer tax advice. Consult a tax preparer with concerns about individual circumstances. In some cases, federal tax credits may be available.

Tesla Power Wall Battery


Customers who participate must use and/or export electricity stored in the battery at the committed amount on a firm two-hour schedule specified by Hawaiian Electric between 6 p.m. to 8:30 p.m. (for example, 6:15 p.m. to 8:15 p.m.) daily including weekends and holidays. Customers will be on the program for 10 years (start date is on agreement). After Dec. 31, 2023, customers will have the option to transition to the program’s next phase to be defined by the PUC for the rest of the 10-year term.

Once the battery is installed and operational, seven consecutive days of operational performance data will be collected to show how much the battery is exporting during the peak period, verifying the incentive amount.

Tesla Power Batteries

Customers must work with a solar contractor to add storage to an existing solar system or install a new solar-plus-storage system. Hawaiian Electric cannot recommend a contractor or equipment. If customers do not have a contractor, Hawaiian Electric recommends comparing bids from at least three contractors.

The contractor will help fill out forms and submit them through Hawaiian Electric's on-line Customer Interconnection Tool. Contractors may also take advantage of Quick Connect, a "pre-approval" program that allows customers who meet certain requirements to install and energize their systems first and send Hawaiian Electric information on their system later. Securing a building permit with the City & County Department of Planning and Permitting or proof of permit application is required as part of the application, and will determine the incentive amount.

Application Checklist:

  • Enrollment in approved Hawaiian Electric renewable energy rate program on island of Oahu: NEM/+, CGS/+, SE, CSS,SIA, FIT
    • Must install new battery
    • Must use battery two hours each day between 6 - 8:30 p.m. We provide exact start time.
  • Proof of permit application with City & County Dept. of Planning & Permitting
  • Submission of a Battery Bonus amendment in the Customer Interconnection Tool
  • Seven days of operational data, as required
    • See Handbook for instructions on delivery of Verification data, and use this excel file to submit data.
  • Signed W9 (Owner Operator of battery, see amendment page 1. Must be one person on W9) mailed to: Hawaiian Electric, P. O. Box 2750, Honolulu, HI 96840, Attn: AT10-SG

As of 5/17/2022

Incentive Rate = $850/kW
If you send your amendment and permit to to lock in your incentive rate, you will be locked in at $850/kW. This rate will be updated when rate changes. We are currently at 6.1MW. The incentive rate will change to $750/kW after 15MW.

SDP Event Start Time = 6:03pm HST
QuickConnect participation only: Please use the start time for the two-hour schedule noted above. If your system is not capable of using the start time above, please contact us at for an alternative window within the capabilities of your system.

Application Period

Applications will be accepted through June 20, 2023, or until the 50MW cap is reached. If the storage system's contracted capacity or export amount changes, it must be corrected within 30 days from notification or a $100 per month charge will appear on the customer's bill.

Failure to Perform

The Company is looking for large variations in meter data, like greatly reduced export or increased consumption, changes that MAY indicate a change in the discharge of the battery due to broken equipment or willful modification of the scheduled dispatch. To do this, the Company is comparing a baseline (or rolling multi-day average) to the current meter data but only alerting on changes that are at least 125% of the baseline. For example, if the baseline is 4, then the current data would need to be at least 5 before it would even be brought to the attention of a reviewer. Using a baseline ensures that short duration deviations like reduced output due to UL1741 SA Advanced Inverter functions or short term weather patterns will not result in review.

If the Company determines the need to conduct a performance audit it will provide 7-days' notice to the system owner (i.e. participant). The Company may request data to verify the discharge of the battery is compliant with the participant's SDP agreement. Data will be requested in the same format as was required for the 7 days Operational Data to verify operation for program enrollment. If the data indicates that battery discharge is no longer compliant with SDP agreement, the Company will issue a Failure to Perform notice to the participant. The participant will have 30 days to cure Failure to Perform. After 30 days if not cured, in accordance with the PUC's order, the Company will assess a $100 per month penalty on the participant. The participant can cure the Failure to Perform at any time by submitting data that verifies participant's Committed Capacity, Schedule Discharge, and 7 days Operational Data (the same as was required for enrollment).


Customers may end participation before the 10-year commitment with a 60-day written notice to Hawaiian Electric and must repay a prorated portion of the incentive. Please fill out the Notice of Termination form and submit to to terminate contract.