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

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

September 9, 2025
Australia's National Electricity Market (NEM) broke records yesterday when renewables supplied 76.4% of total electricity demand, with solar power contributing nearly 60% of the record-breaking clean energy mix.
September 8, 2025
Georgia Power has certified five new solar power purchase agreements (PPAs) within its borders, for a combined capacity of just over 1GW.
September 3, 2025
India has added 2.8GW of rooftop solar in H1 2025, a 158% year-on-year surge from just 1.1GW in the same period last year.
Premium
September 2, 2025
In August 2025, the final month of Australia’s winter, utility-scale and rooftop solar PV generation in the National Electricity Market (NEM) saw a dramatic 22.5% month-on-month increase to 3,338GWh.
September 1, 2025
Australia’s National Electricity Market (NEM) hit a record high for the combined utility-scale solar PV and wind share in the electricity mix on 30 August.
August 26, 2025
India installed 14.3GW of new utility-scale solar capacity in the first half (H1) of 2025, marking a 49% increase year-on-year.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
September 16, 2025
Athens, Greece
Solar Media Events
September 30, 2025
Seattle, USA
Solar Media Events
October 1, 2025
London, UK
Solar Media Events
October 2, 2025
London,UK
Solar Media Events
October 7, 2025
Manila, Philippines