Utility & Grid
Net metering is gone on Oahu. Here is why solar still makes sense
Net metering closed to new Oahu customers, but the math behind solar has not changed nearly as much as the headlines suggest. Here is what actually changed, what it means for your payback period, and why battery storage is now the centerpiece of a good system.
If you have put off going solar because you heard net metering ended, you are not alone. It is one of the first questions homeowners ask us, and it is a fair one. For years, net metering was the headline benefit of going solar in Hawaii: you sent power back to the grid, and Hawaiian Electric credited you at the full retail rate. That program is no longer available to new customers.
Here is what the headlines tend to leave out. Oahu still has some of the highest electricity rates in the country, averaging around 40 cents per kilowatt hour, and the sun shines here 240 to 300 days a year. That combination still makes solar one of the strongest financial moves a homeowner can make. With the right system design, the right battery storage, and the right incentives, payback on Oahu still lands between five and eight years, with lifetime savings that can exceed $76,000.
Independent Energy Hawaii has installed over 20,000 panels across 500-plus homes and helped customers save more than $10 million in utility costs since net metering closed. The rules changed. The math still works.
What actually changed after net metering
When net metering closed to new applicants, Hawaiian Electric introduced alternative billing programs, most commonly CGS+ and Smart Export. Under these programs, excess power your system sends back to the grid is compensated between roughly $0.15 and $0.28 per kilowatt hour, depending on the program and time of day, a meaningful drop from the old 40 cent retail credit.
That shift changes the strategy. Instead of overbuilding a system to push excess power onto the grid, the goal now is to size your system to match your actual usage and pair it with battery storage so you keep more of what you produce.
Even under the new billing structure, homeowners are consistently seeing 60 to 90 percent reductions in their monthly utility bills. And because Hawaii’s electricity rates are tied to volatile imported fuel costs, locking in your own production is a hedge against future rate hikes you cannot get any other way.
What solar ROI looks like on Oahu today
A typical residential system on Oahu runs around $25,000 before incentives, with payback landing at 5 to 8 years given today’s roughly 40 cent rates.
Two incentives still meaningfully change that math. The federal Investment Tax Credit gives a 30 percent credit on solar and battery storage costs. Hawaii’s Renewable Energy Technologies Income Tax Credit adds up to another 35 percent of system cost, capped at $5,000. Stack those against 40 cent electricity and 25 years of production, and the lifetime savings figure is not a stretch, it is what we see in customer accounts every day.
Why batteries are now the centerpiece, not the add-on
Under old net metering, a battery was optional. Under self-supply billing, it is the piece that makes the rest of the system work as intended.
Solar panels produce the most power in the middle of the day, when most homes are empty and demand is lowest. Without a battery, that surplus either exports at the lower CGS+ or Smart Export rate or goes unused. A solar battery captures that midday surplus and holds it for the evening, when grid rates are highest, instead of buying it back from Hawaiian Electric at peak pricing.
There is also the backup power piece. Storms, outages, and grid disruptions are a real part of island life, and a battery-backed system keeps your home running when the neighborhood goes dark. See our guide to Hawaii power outages for what that looks like in practice.
What battery storage brings to a modern Oahu system:
- Stores daytime solar production for use during expensive evening peak hours
- Keeps critical loads running during outages and storm-related blackouts
- Qualifies for the 30 percent federal ITC on storage costs
- Lets you monitor production and stored energy through a smart home app
- Can be added to an existing panel system without starting over
Getting the most out of solar after net metering
| Step | Why it matters |
|---|---|
| Professional site assessment | Sizes your system to actual usage instead of guesswork |
| Enroll in the right billing program | Avoids leaving export credits on the table |
| Annual panel cleaning | Salt air and dust can meaningfully reduce output over time |
| Add storage if you started with panels only | Captures midday surplus instead of exporting it cheaply |
A great system is only as good as how it is maintained. Our SolarServe maintenance program and panel cleaning service cover the upkeep side so your system keeps performing the way it was designed to.
Solar without net metering still delivers
The program changed. The opportunity did not. Oahu’s electricity rates, sunshine, and available incentives still make solar one of the highest-return home improvements available. With the right battery storage and a system designed around your actual usage, you are no longer at the mercy of the grid or the next rate increase.
Whether you are starting fresh or adding storage to an existing system, get a free estimate or contact us to see exactly what your home’s solar potential looks like today.
Frequently Asked Questions
Is net metering completely gone on Oahu?
Is solar still worth it without net metering?
Do I need a battery if I am installing solar after net metering ended?
Can I add a battery to a system I installed years ago under net metering?
How much can I save on my electric bill after switching to self-supply billing?
Keep reading
Batteries & Backup
The solar battery revolution in Hawaii
Hawaii has one of the highest rates of solar-plus-battery adoption in the country, and it is not primarily about outages. It is about the economics of exporting power without full retail net metering.
Read articleBatteries & Backup
Can solar and battery systems protect your Oahu home during power outages?
Standard grid-tied solar shuts off the moment the grid drops. A properly designed solar-plus-battery system can keep your Oahu home running through the outages that HECO customers face every year.
Read articleIncentives & Financing
What solar incentives are still available in Hawaii in 2026
The 30% federal credit is gone, but Hawaii homeowners still have the 35% state tax credit, a 25-year Honolulu property tax exemption and low-interest GEMS financing. Here is what each one is worth and how the payback math looks in 2026.
Read article