7 Common Solar Scams to Avoid (From a 15-Year Installer)
May 9, 2026The Battery-First Method That Cuts Solar Payback in Half
May 9, 2026This is the most controversial thing Jon says: for most NJ homeowners on a standard utility plan with net metering, a battery doesn’t improve your financial return. It’s not a bad product — it’s just the wrong tool for the wrong problem. Here’s the honest breakdown.
Why Batteries Don’t Help the ROI (Usually)
If your utility offers net metering, your excess solar goes to the grid at a credit equal to the retail rate. That’s essentially free storage. A battery costs $10,000–$18,000 installed. You’d need to discharge it hundreds of times per year for years to recoup that in electricity cost savings. Most homeowners don’t run the numbers that carefully.
Here’s the actual math. A 13.5 kWh Tesla Powerwall 3 runs $12,000–$14,000 installed in NJ. At $0.20/kWh, each full discharge saves you $2.70 in electricity. One discharge per day is $985 per year. That’s a 12–14 year payback — and only if you’re consistently filling and emptying the battery every single day, which most households don’t do. Real-world battery payback for a standard NJ net metering customer is typically 15–20+ years. Compare that to the 7–8 year payback on the solar panels themselves.
When a Battery Actually Makes Sense
Backup power during outages. That’s the honest answer for most residential batteries. It’s not a financial investment — it’s insurance. And like insurance, it has real value for the people who need it.
Shore and coastal NJ homeowners — Ocean County, Monmouth County coastal, Cape May — see more frequent extended outages from nor’easters and tropical weather. If you’ve had two or three multi-day outages in the past five years, a battery that covers 24 hours of critical loads has clear and measurable value that doesn’t depend on electricity arbitrage math.
Medical equipment users are in a different category entirely. A CPAP machine, home oxygen concentrator, or at-home dialysis setup makes the power-outage question a safety question. At that point you’re not doing a financial return calculation — you’re making a decision about risk.
Full-time remote workers who bill by the hour should look at the math: if a day-long outage costs $1,500 in lost billable work, a battery that prevents five of those over its lifetime pays for itself on outage prevention alone.
Time-of-Use Rates Change the Equation
If your utility charges peak and off-peak rates, a battery lets you store cheap daytime solar and discharge during expensive evening peak hours. This can meaningfully improve the financial case — but only if you’re actually on a TOU rate plan. In NJ right now, PSE&G, JCP&L, and ACE offer optional TOU plans but don’t require them. If you’ve voluntarily enrolled in TOU pricing, run the numbers on evening peak charges versus midday charging. For some households it pencils out. For most on a flat-rate plan, it doesn’t.
The Best Battery Choices Right Now in NJ
Enphase IQ Battery 5P (5.0 kWh usable) works seamlessly with Enphase microinverter systems — same app, same monitoring, DC-coupled for efficiency. Stack two for 10 kWh, three for 15 kWh. Strong choice for any Enphase system.
Franklin aPower2 offers 13.6 kWh usable, a 12-year warranty, and competitive pricing in NJ right now. Works with multiple inverter brands, making it a flexible option if you’re not on a pure Enphase system.
Tesla Powerwall 3 at 13.5 kWh usable is well-known and works well, but NJ lead times have been 3–6 months at certain points. The integrated inverter design simplifies installation but ties you to the Tesla ecosystem. A good choice if you’re patient and want a single brand.
The Bottom Line
Get solar first. Add a battery later if outage resilience matters to you or if your utility moves to TOU pricing. Don’t let a salesperson sell you a battery as a financial investment without showing you the actual charge/discharge math. Jon recommends batteries to about 30% of NJ clients — those where the backup value is genuinely clear. For the other 70%, the honest answer is that the extra money is better spent on a larger solar array or keeping it in your pocket.
How to Evaluate a Battery Proposal
When an installer proposes a battery as part of your solar package, here’s what to ask before agreeing. First: what is the battery being sized for? Backup power for specific critical loads? Whole-home backup? Daily cycling for bill reduction? The answer should determine the battery size — not the other way around.
Second: what is the round-trip efficiency? A 90% round-trip efficient battery means that if you put 10 kWh in, you get 9 kWh out. At $0.20/kWh, each kWh of round-trip loss costs you $0.02 in charging inefficiency. Over thousands of cycles, this matters. Third: what is the warranty cycle count? Most residential batteries are warranted for 4,000–6,000 full charge cycles. At one cycle per day, that’s 11–16 years. At the guaranteed end of warranty, the battery should retain at least 70–80% of original capacity. Ask to see these specs in writing, not just the headline battery size.
Shore Area NJ — The Case Where Battery Math Changes
For homeowners in Ocean County, Monmouth County coastal communities, and Cape May County, the outage picture is different from the rest of NJ. Nor’easters in January and February, and occasional coastal flooding events, routinely cause extended multi-day outages in these areas. If you’ve been without power for more than 48 hours twice in the past five years, the financial case for battery backup changes significantly.
Think about what a 2-day outage actually costs: spoiled food ($400–$600), generator rental or fuel for a portable generator ($200–$300), hotel if the home is unusable ($300–$600), and the disruption cost to your life or work. A single significant outage can easily run $1,000–$1,500 in direct and indirect costs. A battery that prevents five of those events over its 12-year warranty life — $5,000–$7,500 in avoided costs — has a strong value case independent of electricity arbitrage math. For NJ shore residents, battery storage is a much easier financial decision than it is for a homeowner in Morris County who loses power for two hours twice a year.
How to Run the Battery ROI Math Yourself
You don’t need a spreadsheet to get a quick read on whether battery storage makes financial sense for your NJ home. Take the installed cost of the battery (get this from a quote). Divide it by the annual electricity value of what the battery would realistically cycle. For a 13.5 kWh battery at one cycle per day at $0.20/kWh: 13.5 × 0.90 round-trip efficiency × $0.20 × 365 days = $885/year in electricity value. Divide $13,000 installed cost by $885 = 14.7 year payback. That’s the financial case in isolation. If your utility offers TOU pricing and you can time your cycling to avoid peak rates, the per-kWh value increases and the payback shortens. If your backup power needs have a dollar value attached — medical equipment, remote work, etc. — add that value to the annual benefit side. The math either works or it doesn’t, and it doesn’t take long to find out.
The Right Way to Add Storage Later
A lot of NJ homeowners go solar first and decide to add battery storage a few years later — after they’ve seen their system perform, after a significant storm, or after getting an EV. If that’s your plan, tell your installer now. A future-battery-ready system design routes conduit and reserves physical space for a battery at the time of original installation — a minor change that costs $200–$400 extra at install time and saves $1,000–$2,000 when you add the battery later. The alternative is having your installer come back and retrofit the conduit routing after the fact, which is more disruptive and more expensive. If there’s any chance you’ll want storage in the next 5 years, prep for it now.
One more point worth making: the homeowners Jon hears from years later who regret going solar almost all signed for leases or got talked into batteries they didn’t need. The ones who are genuinely happy almost universally own their system, have it sized correctly for their load, and got SREC registration done on day one. The battery question rarely comes up in those calls — because the economics were solid without it.
The last word on batteries: there’s no shame in deciding you don’t want one. Solar without storage still eliminates most or all of your electric bill, still generates SREC income, and still builds equity in your home. The battery decision can be revisited anytime — and the technology keeps getting cheaper. Deciding now based on your current situation, with the option to add later, is a perfectly sound approach that Jon recommends to the majority of NJ homeowners he works with.
Find Out What Solar Saves You in Your Home
Every home is different — roof angle, usage, utility rate, and local incentives all affect your numbers. Enter your monthly electric bill below for a free savings estimate. Jon reviews every submission personally and follows up within 2 hours.
Does a Battery Make Sense for Your NJ Home?
The answer depends on your utility, how often you lose power, and your specific usage pattern. Jon gives an honest recommendation — including cases where a battery genuinely doesn’t improve your return. Book a free call to get a straight answer for your home.
