Hawaii’s HECO to add 2,800 more rooftop solar systems to oversubscribed programme

April 14, 2017
Facebook
Twitter
LinkedIn
Reddit
Email
stimates show at least 20MW of CGS capacity is available for HECO customers. Source: Flickr/Jon Callas

Hawaiian Electric Companies (HECO) has capacity to add up to 2,800 rooftop solar systems to a previously oversubscribed solar programme.

The Customer Grid Supply (CGS) scheme allows customers to earn credits at the retail rate (US$0.154/kWh for Hawaii, US$0.151/kWh for Oahu and US$0.172/kWh for Maui), as a replacement for net metering which ended in October 2015.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

It also proved extremely popular, reaching its 25MW cap in HECO’s Oahu territory and 5MW caps in Maui and Hawaii Island respectively, several months ahead of schedule. This caused industry stakeholders such as SunPower and The Alliance for Solar Choice (TASC) to advance to the Public Utilities Commission (PUC) for a request to adjust the cap, but to no avail.

However, the utilities are now adding extra capacity to the programme due to a recent PUC decision to create space in the programme by transferring it from private rooftop solar systems that were approved in the past several years but never completed.

Estimates show at least 20MW of CGS capacity is available for HECO customers, representing about 2,800 private rooftop solar systems. More than half of that capacity is on Oahu.

Hundreds of CGS applications are already in line for processing. Those applications will be processed in the order received and only as capacity becomes available through 21 October 2017.

Read Next

March 2, 2026
The final months of 2025 saw a surge in US residential solar installations as homeowners sought to take advantage of the end of the federal tax credit for purchased systems, according to the solar marketplace EnergySage.
Premium
March 2, 2026
Feb 2026 NEM solar generation fell 19.7% from January while pricing volatility hit extremes, with rooftop solar spiking to AU$457.91/MWh.
February 18, 2026
Testing and Certification company UL Solutions has launched a new cybersecurity certification programme for distributed energy resources (DER) and inverters.
Premium
January 12, 2026
December 2025 saw record solar generation in Australia's NEM, with rooftop and utility-scale solar surging, but pricing volatility persisted.
December 17, 2025
Germany has revised down the price ceiling for roof-mounted solar PV systems to €0.1/kWh (US$0.117/kWh) for tenders to be held in 2026.
Premium
December 9, 2025
Rooftop solar PV generated nearly twice the output of utility-scale solar throughout November 2025, maintaining a 1.9:1 ratio in Australia.

Upcoming Events

Solar Media Events
March 24, 2026
Dallas, Texas
Solar Media Events
April 15, 2026
Milan, Italy
Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain