HECO export credits are low and rates have climbed past 42¢/kWh. Here's why nearly every new Hawai'i solar home is now built with a battery — and how BYOD Plus can pay you up to $4,000 per battery.
Here's a scenario that surprises a lot of Hawai'i homeowners: you install solar, your daytime bill drops to almost nothing — and then the sun goes down, the grid takes over, and you're back to paying one of the highest electricity rates in the country. If your panels aren't paired with a battery in 2026, you're handing your cheapest power back to HECO and buying it again at night for full price. Let's talk about why that's changing how every smart solar home in Hawai'i is built.
Hawai'i ended traditional net metering back in 2015. New rooftop solar customers today connect through the Customer Grid-Supply Plus (CGS+) program, which credits you for the excess energy your panels send to the grid — but only at roughly 10¢ to 18¢ per kWh, depending on your island and the time of day.
Compare that to what you pay to buy power back: the average Hawai'i residential rate now sits around 42¢ per kWh, the highest in the United States and more than double the national average of about 18¢. Exporting your midday surplus for 15¢ and rebuying it at 42¢ after dark is a losing trade. A battery flips that math — you store your own cheap solar power during the day and use it at night, capturing the full retail value of every kilowatt your roof produces.
The good news is that HECO will pay you to add storage. The popular Battery Bonus program — which once paid $850 per committed kW — has closed and been replaced by Bring Your Own Device Plus (BYOD Plus). The new program offers an upfront incentive of up to $2,000 per battery, and for households that qualify as Low-to-Moderate Income (LMI), that incentive doubles to $4,000 per battery.
On top of the upfront check, BYOD Plus participants earn monthly export credits for the energy they share back during a chosen daily two-hour window — at their current retail billing rate, not the reduced grid-supply rate. The trade-off is a five-year commitment and an advanced (smart) meter, but for most Oahu and Maui homeowners the combination of the upfront incentive plus ongoing credits makes storage pencil out faster than ever.
Every household is different, but here's a realistic snapshot of how a battery changes the picture for a typical Hawai'i solar home in 2026:
That last number is the one to sit with: roughly 95 to 98% of all new solar installed in Hawai'i now includes a battery — a rate the industry describes as orders of magnitude higher than anywhere else in the country. Hawai'i homeowners have already done this math, and storage won.
Dollars aside, a battery is peace of mind. When a storm knocks out power on your street, a solar-only system shuts off for safety — but a home with storage keeps the lights, the fridge, and the wifi running. After the events of recent years, more Maui and Oahu families are treating backup power as essential, not optional.
It also matters for the bigger picture. HECO is investing heavily in grid hardening and wildfire mitigation — costs that are driving the utility's first major rate increase in over five years, expected to land by the end of 2026. Every battery on a Hawai'i roof reduces strain on that grid during peak evening hours, which is exactly why the utility is willing to pay you to install one.
Today's home batteries are a world apart from a few years ago. Systems like the Tesla Powerwall 3 and the Enphase IQ Battery integrate seamlessly with new or existing solar, manage your storage automatically, and let you watch your energy flow from an app. Sizing is the key decision: enough capacity to cover your evening usage and your BYOD Plus export window, without paying for more than your home needs.
This is where going local pays off. Hawai'i's interconnection rules, HECO's advanced-meter requirements, and the BYOD Plus enrollment process are unlike anywhere on the mainland. At Oceanic Home Solar, we live here and install here — handling the program paperwork, Honolulu permitting, and HECO interconnection for homeowners across Oahu and Maui every week. We'll make sure your battery is sized right, enrolled correctly, and earning every credit it qualifies for.
With net metering gone, export credits low, and retail rates climbing past 42¢, a solar system without storage leaves real money on the table in 2026. BYOD Plus puts up to $4,000 back per battery, you keep the full value of your own power, and you gain backup security when the grid falters. It's no wonder nearly every new Hawai'i solar home is built with a battery.
Whether you already have panels and want to add storage, or you're planning a fresh install, the smartest solar setup in Hawai'i today is solar plus a battery. Let's find out what that looks like for your 'ohana.
BYOD Plus incentives, full retail value for your power, and backup when the grid goes down — from your Hawai'i neighbors.
