Hawaii’s HECO to offer time-of-use rates

Facebook
Twitter
LinkedIn
Reddit
Email
Source: Flickr/Ricardo Mangual

Hawaii regulators have approved a tariff for Hawaiian Electric Companies (HECO) to establish interim time-of-use (TOU) rates in the utility’s biggest base rate increase in almost six years.

Pursuant to an order issued by the Public Utilities Commission (PUC) on Friday directing HECO to submit tariffs for an interim programme, customers will now be able to manage their energy consumption to reduce payments and also maximise the use of the grid.

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

TOU rates are based on the time of day electricity is used and the cost of supplying electricity to a consumer at that time. If electricity is used during off-peak hours, the rate will be lower than the standard flat rate. Likewise, on-peak hours will cost more than the standard rate.

Under the programme, the on-peak time, coinciding with the highest volume of residential customer demand, will result in higher prices than the standard flat rate. Meanwhile, the off-peak period, usually aroud mid-day, will have lower prices than the standard rate during the day to encourage the use of solar and other renewables.

The interim programme is available for two years on an optional basis for all HECO customers, with a non-punitive opt out option.

According to local Island report, the new programme could result in a US$9.31 monthly increase on a typical 500kWh energy bill due to higher rates during the evening period. However, overall, due to lower fuel prices, bills charged under the new TOU rates will still be lower than standard rates administered a year ago.

The PUC has instructed HECO to file a tariff for the programme within thirty days of its initial order, after which time the programme will be open for enrolment. 

Read Next

July 15, 2026
PureSky Energy, ClearGen Holdings and Aligned Climate Capital have advanced distributed solar projects in the US this week.
July 15, 2026
The chief executive of fledgling US module and cell producer T1 Energy has highlighted his company’s efforts to forge local component manufacturing partnerships and tap homegrown engineering talent.
Premium
July 15, 2026
US module and soon-to-be cell manufacturer T1 Energy is looking beyond wafers and cells to catalyse domestic production of ancillary components such as glass, frames and even pallets—while tapping semiconductor industry talent to staff its expanding operations.
July 15, 2026
Global Infrastructure Partners (GIP), a subsidiary of global asset owner giant BlackRock, has agreed to acquire a majority and controlling interest in commercial solar PV developer Summit Ridge Energy.
July 15, 2026
Avantus has signed a 20-year PPA with the Clean Power Alliance (CPA) in California for the output of a 200MW solar-plus-storage project.
July 13, 2026
Renewables are the lowest-cost source of new energy generation in the US, despite increasing costs, according to Lazard.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
April 20, 2027
Istanbul, Türkiye