If you’ve been putting off going solar because you heard net metering ended, you’re not alone. It’s one of the first things homeowners ask us about, and it’s a fair concern. For years, net metering was the headline benefit of going solar in Hawaii. You sent power back to the grid, and HECO gave you a full retail credit in return. That program is no longer available to new customers.
But here’s what the headlines don’t always mention: 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 smartest financial moves a homeowner can make. With the right system design, the right battery storage, and the right incentives, the payback period on Oahu lands between five and eight years, and the lifetime savings can exceed $76,000.
At Independent Energy Hawaii, we’ve installed over 20,000 panels across 500-plus homes, and we’ve helped our customers save more than $10 million in utility costs. The rules changed. The math still works.
Oahu’s Solar Landscape After Net Metering: What Actually Changed
When net metering ended for new applicants, HECO introduced alternative billing programs to replace it. The two most common options you’ll hear about are CGS+ and Smart Export. Under these programs, any excess power your system sends back to the grid is compensated at a rate between $0.15 and $0.28 per kilowatt hour, depending on your program and the time of day.
That’s a meaningful drop from the old full retail credit of 40 cents. And yes, if your system produces more power than your home can use during the day and you’re not storing it, that excess is essentially leaving money on the table.
The shift to what’s now called self-supply solar billing changes the strategy. Instead of overbuilding your system to push excess power to the grid, the goal is to size your system to match your actual usage and pair it with battery storage to hold onto every kilowatt hour you produce.
The good news is that even under the new billing structure, homeowners are consistently seeing 60 to 90 percent reductions in their monthly utility bills. And with Hawaii’s electricity rates tied to imported fuel costs, which are volatile by nature, locking in your own energy production is a hedge against future rate hikes that you simply can’t get anywhere else.
When we assess your home, we look at your roof, your shading patterns, your usage data, and your goals. That’s how we design a system that performs in the real world, not just on paper.
Crunching the Numbers: What Solar ROI Looks Like on Oahu Today
Let’s talk about the actual numbers, because this is where the picture gets a lot clearer.
A typical residential solar system on Oahu runs around $25,000 before incentives. Payback lands at 5-8 years with 40¢ rates, matching what our customers see daily.
And there are significant incentives available right now. The federal Investment Tax Credit, commonly called the ITC, gives you a 30 percent credit on the cost of your solar system and your battery storage. Hawaii’s Renewable Energy Technologies Income Tax Credit adds another layer of savings, covering up to 35 percent of the system cost, capped at $5,000.
When you stack those credits against 40-cent electricity and factor in 25 years of production from a quality system, the lifetime savings number is not a stretch. It’s a realistic projection based on what we see with our own customers every day.
The process is straightforward. You start with a free quote, we design and install your system, and then you work with your tax advisor to claim your credits at filing time. We walk you through each step so nothing falls through the cracks.
Solar Batteries on Oahu: The Piece That Changes Everything
Under the old net metering model, a battery was optional. Under self-supply billing, it’s essentially the centerpiece of a well-designed system.
Here’s why. Your solar panels produce the most power in the middle of the day, when you’re probably at work and your home’s energy demand is at its lowest. Without a battery, that surplus power either gets exported to the grid at the lower CGS+ or Smart Export rate, or it goes unused entirely. Either way, you’re not getting full value from what your panels produce.
A solar battery changes that equation completely. It captures the excess power your home doesn’t use during the day and stores it for the evening hours when the sun goes down and grid electricity costs the most. Instead of buying back power from HECO at peak rates, you’re running on what your own system produced and saved.
There’s also the backup power piece, and in Hawaii, this matters more than most people expect. Storms, outages, and grid disruptions are a real part of island life. A battery-backed solar system keeps your lights on, your refrigerator running, and your family comfortable when the neighborhood goes dark. That kind of energy independence has a value that doesn’t show up in a payback calculation, but homeowners feel it the moment they need it.
Here’s a quick look at what battery storage brings to your system:
- Store daytime solar production and use it during evening peak hours instead of paying grid rates
- Keep critical loads running during outages and storm-related blackouts
- Qualify for the 30 percent federal ITC on battery storage costs
- Monitor your system’s performance and stored energy in real time through a smart home app
- Add storage to an existing panel system; you don’t have to start from scratch
We’ve paired battery storage with panels on over 1,000 systems, and the attachment rate among our Hawaii customers is among the highest in the country. Once homeowners understand how it works, it’s an easy decision.
Practical Tips to Get the Most Out of Solar on Oahu
A great system is only as good as how well it’s maintained and how smart you are about using it. A few simple habits make a real difference over time.
Start with a professional site assessment. We look at your specific roof, your shading throughout the day, and your monthly usage so your system is sized correctly from day one. Oversizing wastes money. Undersizing leaves savings behind.
Once your system is live, enroll in the right billing program for your situation. We help you navigate the self-supply options so you’re not leaving credits on the table.
Plan for an annual panel cleaning. Dust, salt air, and bird activity affect production more than most people expect. We offer cleaning as part of our ongoing service, and it’s one of the easiest ways to protect your system’s long-term output.
Finally, take advantage of our referral program. When you refer a friend or neighbor who installs a system, you earn a $1,000 credit. Your smart home monitoring app makes it easy to track your savings and share the story.
Solar on Oahu Without Net Metering Still Delivers. Here’s Your Next Step.
The program changed. The opportunity didn’t.
Oahu’s electricity rates, sunshine, and available incentives still make solar one of the highest-return home improvements a homeowner can make. With the right battery storage and a system designed around your actual usage, you’re not at the mercy of the grid or future rate increases.
Independent Energy Hawaii has been doing this work long enough to know what performs and what doesn’t. Whether you’re starting fresh or looking to add storage to an existing system, we’re ready to show you exactly what your home’s solar potential looks like.
Use our savings calculator to get a quick picture, then schedule your free estimate. The question isn’t really whether solar is worth it in Hawaii. With 40-cent electricity and 300 days of sun, the better question is how much longer you want to wait.