Going Solar

Going Solar

Learn more about our solar energy programs.


Have questions about our programs for customer generated clean energy? Please call (808) 969-0358, or view our FAQs >

Customer Renewable Programs

Traditionally, generation of electricity takes place at power plants. This is referred to as centralized generation. Distributed energy resources refer to smaller generators located throughout the energy grid, such as private rooftop solar systems mounted on homes and businesses.

Hawaii is leading the country when it comes to distributed energy resources and we have several programs available to customers who want to offset their energy bill by generating their own power.

By participating in these programs, you'll also help reduce our carbon footprint and become eligible to receive a Project Footprint reward*, a portable solar-powered charger with a built-in flashlight. Please provide your email address through our Online Customer Service Center so we can contact you with instructions on how to receive your free gift.

* Project Footprint rewards are available only while supplies last. Hawaiian Electric may end the program or issuance of rewards at any time. Rewards will only be sent to addresses within our service territories and are limited to one (1) per address for each eligible action. Individuals must be 18 or older and must provide a valid email address. Rewards may not be available for individuals who have previously asked not to be contacted by Hawaiian Electric or who have unsubscribed from or opted out of our marketing emails. If you do not receive an email confirming your reward eligibility within two (2) weeks, please email us at footprint@hawaiianelectric.com.

Our Customer Renewable Programs

  • Customer Grid-Supply Plus (CGS Plus) systems must include grid support technology to manage grid reliability and allow the utility to remotely monitor system performance, technical compliance and, if necessary, control for grid stability.
  • Smart Export customers with a renewable system and battery energy storage system have the option to export energy to the grid from 4 p.m. – 9 a.m. Systems must include grid support technology to manage grid reliability and system performance.
  • Customer Self-Supply (CSS) is intended only for private rooftop solar installations that are designed to not export any electricity to the grid. Customers are not compensated for any export of energy.
  • Customer Grid-Supply (CGS) participants receive a PUC-approved credit for electricity sent to the grid and are billed at the retail rate for electricity they use from the grid. The program remains open until the installed capacity has been reached.
  • Net Energy Metering (NEM) is closed to new applicants.
  • Net Energy Metering Plus (NEM Plus) allows current NEM customers with a signed agreement to add additional non-export capacity to their system.
  • Standard Interconnection Agreement (SIA) is designed for larger customers who wish to offset their electricity bill with on-site generation.
  • Community-Based Renewable Energy (Community Solar) provides a way for participating subscribers without privately-owned rooftop solar to benefit from electricity generated by a renewable energy facility in their utility service territory.

Programs at a Glance

Wondering what program may be right for you? It really depends on your individual situation and your short- and long-term goals. If you’re trying to decide between available programs for private rooftop solar or other renewables, here are a few questions to help determine the best fit.

How do you currently use energy? How might that change in the future? What do you want to achieve through participating in one of our programs? Here's a quick comparison of the available programs.

This chart provides an example of a hypothetical total bill for each available program using the same amount of energy delivered and received. As with all examples, your result will vary depending your energy use. Please review the details for each program for additional information that will help you determine the program that’s right for you.

Export AllowedYesYesNoYes
Export RestrictionsNoNoN/ASolar Day
Minimum Bill$25$25$25$25
Credit rate (c/kWh)***$0.15$0.10N/A$0.11
Program Cap9.91 MW7 MWN/A5 MW
Inverter RequirementsAdvanced with Volt Var and Frequency Watt activated; Fixed Power Factor deactivated.*Advanced with Volt Var and Frequency Watt activated; Fixed Power Factor deactivated.Advanced with Volt Var and Frequency Watt activated; Fixed Power Factor deactivated.Advanced with Volt Var and Frequency Watt activated; Fixed Power Factor deactivated.
ControlsN/AYes: Utility or AggregatorCustomerYes: Economic
Hypothetical Bill Comparison:**$119.20$142.29$195.36$140.03

*Prior to 3/10/2018 CGS Customers were required to program their advanced inverters to include TROV-2, Full ride-through and Fixed Power Factor. They must now be re-programmed to current requirements as noted in Rule 14H.

**Assumes a residential bill with Delivered (DEL) energy of 503 kWh, Received (REC) energy of 907 kWh, with a NET of 404 kWh and the application of the monthly bill credit for Hawaii Island. Does not reflect any benefit from accrued credits. Calculation is based on rates effective October 2018. Some rates vary monthly. Non-residential customers subject to different rate schedules and higher minimum bill.

***Credit rate shown is rounded to the nearest whole value. Standard retail rates applied for energy delivered/used when rooftop solar or other renewable system is not in use or exporting to the grid. Customers on rates other than retail should contact us to verify whether those options will apply in coordination with these programs.

Customer Grid-Supply remains open until installed capacity is reached. New applications are placed into queue for processing when space in the program becomes available. There is no guarantee that space will become available. New applications may be submitted via mail and are not supported in the Customer Interconnection Tool.

NEM and NEM Plus are not shown in this table. The NEM program is closed and NEM Plus is only available to customers already enrolled in the NEM program.

Advanced Inverters

The safe, reliable operation of the electric grid is important to everyone. The combination of utility system upgrades and leading-edge, customer-facing technology is providing new opportunities to connect more private rooftop solar systems in less time with greater efficiency. All new rooftop solar systems in Hawaii are now required to use advanced inverters that help maintain a stable and reliable grid. Click here for more information on how advanced inverters work and what it means for your system.

Apply Online, Change of Ownership and Forms

You may access the Customer Interconnection Tool to apply online. Please see our How To Guide, Training Video, and Frequently Asked Questions for more information.

Apply Online Today

Planning to sell or purchase a property with a rooftop solar system already installed, or one with a pending agreement in place? Click here for information on what you need to do to keep your rooftop solar program agreement in good standing.

Additional Forms

Frequently Asked Questions

Click here for frequently asked questions regarding our Customer Grid-Supply and Customer Self-Supply programs.