Battery Storage
Your
In Hawaii, a battery isn’t a luxury, it’s a necessity. It powers your home at night under HECO’s Smart DER program and provides emergency backup power during outages. It provides safety, security, and unlocks true energy independence. But here’s what most companies won’t tell you:
The battery is the single most expensive part of your solar system. And if it’s sized incorrectly, or if it’s oversold, you could spend thousands more than you need to.
At Hawaii Solar Group, we help you avoid costly mistakes. We do not push a particular brand or convince you that “everyone needs two Powerwalls”. We’re here to design the right setup based on your home’s real energy patterns, your backup priorities, and your long-term goals.
Solar Battery Storage
Why Batteries Matter
Charge During the Day. Power Your Home at Night.
Almost all solar energy is produced midday, typically when your home usage is low. That solar production is diverted to your batteries which store the energy so you can use it later, at night, during peak rates, or when the sun isn’t shining.
Keep the Lights On When the Grid Goes Down.
Unfortunately, severe storms, wildfires, and utility blackouts happen. A battery ensures your refrigerator runs, your lights stay on, and you stay connected, even when the rest of your neighborhood goes dark.
Smart Cycling with HECO’s Grid
Under HECO’s Smart DER program, batteries charge and discharge daily, making proper sizing and design more important than ever. Oversizing wastes money, and undersizing leads to outages and frustration. We help you find the sweet spot to ensure you’re fully covered at the lowest expense possible.
Buying Battery Storage
We Help You Get This Right

We’re Not Tied to Any One Brand.
Whether it’s a Tesla Powerwall, a Franklin, an Enphase, or others, we compare batteries from all manufacturers to match your needs, not someone’s sales quota.
We Know What It Should Cost.
Because we review hundreds of battery quotes, we know when something is OVERPRICED or UNDERSIZED. We negotiate on your behalf to ensure you’re getting the best deal.
We Design Around Your Life, Not Just Your Roof.
Do you want full-home backup? Or just critical loads? Will you be charging an EV? Is your main goal savings or security? We build your system around the answers to those questions, not what’s easiest to sell.
No Sales Pitch. No Pressure. No Cost.
We don’t charge for our service and we don’t earn a commission. That’s why you can trust our advice. We get paid only when you choose the installer that’s right for you, and the referral fee comes from them, not you.
A Battery Is an Investment. Let’s Make Sure It’s the Right One.
Tap the Big Red Button to get a battery plan designed around your real usage, your home’s unique needs, and your peace of mind, not someone else’s bottom line.
