How Net Metering Works (NJ, NY & PA — Plain English)
Net metering is the mechanism that turns your roof into a two-way electricity meter. Here's exactly how 1:1 credits, true-ups, and excess generation work in NJ, NY, and PA — and what to watch for.
If solar saves you money on your utility bill, the mechanism doing the actual saving is called net metering. It’s the rule that turns your utility meter into a two-way device: pull power from the grid when your panels aren’t producing enough, push power back when they’re producing more than you need, and at the end of the billing cycle the utility only charges you for the net consumption.
It sounds simple. It mostly is. Here’s how it actually works in the three states Reliant operates in most — and the small print that matters.
The basic mechanic
Picture your utility meter as a scoreboard. With no solar, every kWh the meter records is a kWh you owe the utility for. Add solar, and now two things happen:
- When your roof is producing more than your house is consuming, the excess flows out to the grid. The meter runs backwards (or, on a smart meter, accumulates a credit on a separate register).
- When your roof isn’t producing enough — overnight, in winter, when it’s cloudy — you pull from the grid the way you always did. The meter records that pull.
At the end of the billing period, the utility subtracts the kWh you sent out from the kWh you pulled in. You pay for the net. If you sent more than you pulled, you bank a credit that rolls forward to the next month.
That 1:1 ratio — one kWh out earns the right to pull one kWh back at no charge — is the headline feature of net metering. Not every state offers it. New Jersey, New York, and Pennsylvania all do, with state-specific rules below.
New Jersey net metering
New Jersey’s net-metering rule is one of the most homeowner- and business-friendly in the country.
- 1:1 credit for residential systems under 5 MW (which covers every home and most commercial installs).
- No monthly service fee specifically for being a net-metered customer (you still pay your normal connection fee).
- Annual true-up in the customer’s anniversary month. Excess credits banked over the year are paid out at the utility’s avoided-cost rate — typically lower than the retail rate, so the practical strategy is to size the system so you produce ~95–100% of consumption rather than significantly over.
- No interconnection fee for systems under 10 kW. Larger systems may require a study.
The two main NJ utilities (PSE&G and JCP&L) administer net metering through their existing residential and small-commercial tariffs. Atlantic City Electric and Rockland Electric handle it the same way.
New York net metering
NY transitioned to VDER (Value of Distributed Energy Resources) compensation for new systems above a certain size, but standard 1:1 net metering still applies to:
- Residential systems
- Non-residential systems under 750 kW (with some carve-outs)
For larger commercial projects, the utility credits exported energy at a stack of values (LBMP wholesale rate + locational value + environmental value + capacity value) rather than the flat retail rate. The number can be very competitive, but it requires more analysis up front — Reliant’s commercial proposals for NY projects model both the retail-rate and VDER scenarios.
Pennsylvania net metering
PA’s net-metering rules are utility-by-utility. The major investor-owned utilities (PECO, PPL, Duquesne, Penelec, Met-Ed, West Penn Power) all offer 1:1 net metering through their rate tariffs, but with one important caveat:
- Anniversary-month true-up at the avoided-cost rate (similar to NJ).
- Some utilities require a separate net-meter installation if you have an older non-smart meter. This is usually free but can add a few weeks to project commissioning.
PA’s net metering is less generous than NJ for sizing-up scenarios, so we typically size PA residential systems closer to actual annual consumption rather than max roof capacity.
What happens with excess generation
This is the question every prospective solar buyer asks: “What if my system produces more than I use?”
Three things can happen, depending on the state and the billing cycle:
- In-month banking: If you generate more in a month than you consume, the kWh credit rolls forward to the next month at the retail rate. You can use it any time in the next 12 months.
- End-of-year true-up: At your annual anniversary, any remaining credit is paid out (in NJ and PA) at the utility’s avoided cost — the wholesale rate the utility would have paid to generate that energy, typically $0.03–$0.05/kWh. Much lower than the retail rate.
- In NY’s VDER world: Larger commercial systems get a per-kWh value computed from the stack mentioned above. The amount accrues as a bill credit indefinitely.
The takeaway: don’t oversize. A well-engineered system targets 95–100% of annual consumption. The extra capacity beyond that produces credits you’ll redeem at a fraction of the retail rate.
What net metering does not cover
A few things commonly get confused with net metering:
- Demand charges (commercial only). Net metering offsets the energy portion of your bill (the kWh part), not the demand portion (the peak-kW part). Commercial customers with high demand charges may need batteries to fully optimize the bill — see the upcoming post on commercial demand-charge management.
- Connection / customer charges. The flat monthly service fee on your bill is a separate line item. Net metering doesn’t zero it out.
- SREC revenue. SRECs are a separate stream paid through the state’s renewable-energy program. Net metering is grid-side billing math. The two stack — they don’t replace each other.
What we tell every solar buyer
Net metering is the workhorse of solar economics in the tri-state region. It’s why your utility bill can drop by 80–95% the day after your system is energized. But it’s also a utility rule, not a federal one — meaning the specific math depends on which utility you have, what tariff your house or business is on, and how the state PSC has set the rules this year.
When we model a proposal, we use your actual utility (PSE&G, JCP&L, PECO, etc.) and your actual rate schedule. The savings number we put in front of you is the one the meter will produce, not a generic average.
Want to see exactly what your bill looks like after net metering kicks in? Send us 12 months of utility bills and your address. We’ll model production, net-meter savings, and SREC revenue side by side. Get a free assessment →
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