When the roof is not yours to use
The Administratively Determined Incentive Program provides incentives for net metered residential, net metered non-residential, remote net metered and community solar projects of 5 MW dc or less. Community solar sits inside the same programme as rooftop, which tells you it is a supported route rather than a fringe one.
That matters in a city with a high share of renters and multi-family housing. Community solar is designed for exactly the household that cannot install on its own roof, and asking about it is a more productive first step than getting quotes for an installation you cannot do.
Ask New Jersey's Clean Energy Program what community solar options are open at your address, what the terms are, and what a subscription actually commits you to. Get that from the programme rather than from a company selling subscriptions, since the incentive is state-administered and the programme has no product to sell you.
If you rent, be clear about what you are signing up to. Ask what happens if you move, how long the commitment runs, and whether there are fees for leaving. Those are the questions that matter most for a household that may not be at the same address in five years.
If you own the building, the arithmetic is unusually good
New Jersey provides full retail net metering, so you receive full retail credit on your utility bill for each kilowatt hour your system produces over the course of a year. On top of that the incentive pays on generation, with one SREC-II created per 1,000 kilowatt hours, guaranteed for a term of 15 years.
Two revenue streams rather than one is why New Jersey pays back faster than its sun hours alone would suggest. It is also why the metering has to be right: New Jersey's Clean Energy Program states that the metering used for netting and crediting cannot measure gross generation for REC or SREC creation, and that relying on one meter for both would leave the customer-generator short changed.
So confirm a separate Solar Production Meter is included, who installs it, and how its readings reach the programme. Then ask how you can check it is still reporting a year later, because a meter that quietly stops costs you part of a fifteen-year entitlement without any obvious signal.
If the building is a rental you own, ask specifically how net metering credit works when the tenant holds the electricity account. That determines who receives the bill savings and who receives the incentive, and it is much better settled before installation than after.
Protecting yourself in a market with real incentives
Wherever a state offers genuine money there are people selling against it badly, and New Jersey offers genuine money. That is a reason to be careful about who you sign with rather than a reason to stay out.
Get the equipment specified by manufacturer and model number rather than by description, establish who honours each warranty and for how long, and ask what the workmanship warranty covers on roof penetrations specifically. Leaks around mounting hardware are the most common physical failure in residential solar and they usually appear a few years in.
Ask any projection to separate the bill savings from the incentive income rather than combining them into one figure, and ask what happens after year fifteen when the Qualification Life ends. A twenty-five year projection carrying incentive income the whole way is describing something that does not happen.
Do not sign at the kitchen table on the night of the first conversation. Take the paperwork, read it, and get a second quote. Any offer that is genuinely good will still be there next week.
Two exemptions, and neither one happens by itself
New Jersey exempts solar energy equipment from state sales tax, but the exemption has a procedure and it happens at purchase. Under N.J.A.C. 18:24-26.4 the purchaser must issue to the seller an Exempt Use Certificate, Form ST-4, or other approved form, indicating on its face that the purchase qualifies for exemption as a solar energy system, with the installation property address inserted.
Ask your installer how that is handled and confirm the certificate was issued rather than assuming the price you were quoted already reflects it. It goes to the seller as part of the transaction, not to the state on a return later.
The property tax exemption is separate. Qualifying renewable energy systems are exempt from real property taxation under N.J.S.A. 54:4-3.113a to g, but Form CRES, the Certification of Renewable Energy System, must be filed with your local municipal tax assessor, and the system must be certified by the local construction code official.
The annual exemption is the difference between the total assessed value of the property before and after the system has been installed. Nobody files Form CRES for you by default, so ask whether your installer assists and put it on your own list either way. Requirements vary between municipalities, so a short call to your own assessor asking what they need is worth more than any general guidance.