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

September 22, 2016
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. 

16 June 2026
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 16-17 June 2026, will be our fifth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2027 and beyond.

Read Next

November 24, 2025
US solar module manufacturer First Solar has inaugurated its 3.5GW vertically integrated manufacturing facility in the state of Louisiana, the company’s fifth factory in the US.
November 21, 2025
CPS Energy has issued a request for proposals (RFP) to acquire 600MW of new solar capacity through power purchase agreements (PPA).
November 20, 2025
US independent power producer (IPP) Arevon Energy has begun construction on a 124MW solar PV project in Illinois, its first utility-scale project in the state.
November 19, 2025
The US Department of Energy (DOE) will need to invest US$25 billion by 2030 to maintain its position as a leader in the global energy sector.
Premium
November 18, 2025
PV Talk: George Touloupas of Intertek CEA explains how the regulatory environment is ratcheting up for the solar supply chain.
November 17, 2025
US solar module manufacturer First Solar will build a new production facility in the state of South Carolina, which will bring its US nameplate manufacturing capacity to 17.7GW by 2027.

Upcoming Events

Solar Media Events
November 25, 2025
Warsaw, Poland
Solar Media Events
December 2, 2025
Málaga, Spain
Upcoming Webinars
December 4, 2025
2pm GMT / 3pm CET
Solar Media Events
February 3, 2026
London, UK
Solar Media Events
March 24, 2026
Lisbon, Portugal