Maui Business

MECO Offers Rooftop Solar Options

June 22, 2016, 11:20 AM HST
* Updated June 22, 3:33 PM
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Maui Now stock photo. June 2016.

Maui Now stock photo. June 2016.

The capacity limit for rooftop solar systems that send excess power to Maui Electric’s grid has been reached, but customers who want solar still have options.

While the Customer Grid Supply program is now at the capacity limit set by the state Public Utilities Commission, customers can buy rooftop systems that don’t export to the grid, but that will still offset a substantial part of their electric bills.

Customers may still consider the self supply program, which enables them to install PV systems that provide power to the home but do not export electricity to the grid. These systems can include energy storage devices, such as batteries.

Under the grid-supply program, an increasing number of customers were installing oversized rooftop systems. These systems, sometimes consisting of dozens of panels, can export significantly more electricity to the grid than the household actually uses. As these large systems were installed, there was less room on the grid for additional systems.

As of this week, approved systems and applications reached the 5 MW capacity limit that regulators set for Maui Electric’s service territory, which includes Maui, Lānaʻi and Moloka‘i.


“Adding more rooftop solar power is an important part our effort to reach 100 percent renewable energy,”said Sharon Suzuki, Maui Electric president. “We will continue to work with the PUC to develop more options for customers that support our state’s renewable energy goals.”


Solar providers are developing a variety of self-supply systems that meet the technical specifications set by the PUC. This will ensure safe, reliable interconnection and provide opportunities for more customers to enjoy the benefits of solar energy.

For more information, go online.

Customers on O‘ahu and Hawai‘i Island may continue to apply for the CustomerGrid Supply program.


Customers should choose a system that’s the right size for their household; the system should match their actual energy use.

Buying a system that is larger than necessary will cost more upfront and will not necessarily save more money than an appropriately sized system.

In addition, customers who install appropriately sized systems help leave room on the grid for more rooftop solar customers.

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