Solar panels cost about $2.58 per watt in New Jersey, including installation. EnergySage market data lists an average system size of 12.36 kilowatts and an average price of $31,920 before incentives. Typical prices range from about $27,132 to $36,708.
| Solar System Size | Estimated NJ Cost Before Incentives |
|---|---|
| 3 kW | $7,750 |
| 5 kW | $12,917 |
| 6 kW | $15,501 |
| 7 kW | $18,084 |
| 8 kW | $20,668 |
| 10 kW | $25,835 |
| 12.36 kW average system | $31,920 |
These estimates cover a complete installed solar system, not the panels alone. A quote may include inverters, mounting equipment, engineering, permits, utility interconnection and labor.
What Is the Average Solar Installation Cost in New Jersey?
For a typical New Jersey home, the estimated cost is:
- 3 to 5 kW system: $7,750 to $12,917
- 6 to 8 kW system: $15,501 to $20,668
- 10 to 12.36 kW system: $25,835 to $31,920
Your electricity use, roof space, roof direction and shade all affect the system size. Future plans matter too. An electric vehicle, heat pump or other high-use appliance may increase the amount of solar you need.
The average estimate comes from EnergySage marketplace data updated September 18, 2026. Installer quotes can vary because New Jersey homes have different roof designs, electrical panels and permitting requirements.
How Much Do Solar Panels Cost After Incentives in NJ?
There is no single after-incentive price for a New Jersey solar installation. Each benefit works differently, and some reduce taxes or utility bills rather than the contractor's invoice.
Federal Solar Tax Credit
For a residential system placed in service after December 31, 2025, the federal Residential Clean Energy Credit is no longer available under current IRS guidance. A system installed in 2026 should not be priced on the assumption that it will receive the former 30% federal tax credit.
New Jersey SREC-II Incentive
Eligible residential systems can earn New Jersey Solar Renewable Energy Certificates, called SREC-IIs, through the state's Successor Solar Incentive, or SuSI, program.
For Energy Year 2026, the New Jersey Board of Public Utilities lists the residential incentive at $85 per SREC-II. An eligible system earns one SREC-II for each megawatt-hour of electricity it produces, with a qualification period of 15 years.
SREC-II income is based on solar production. It is not usually an upfront reduction on the installer's invoice.
Estimated annual SREC-II income = annual solar production in MWh × $85
For example, a system that produces 10 MWh in one year would generate $850 in SREC-II value at the listed rate. Earnings depend on production, eligibility, registration and program rules.
Net Metering
New Jersey net metering gives customers credits when their solar system sends excess electricity to the grid. Those credits can reduce future electricity bills, but they do not reduce the installation price paid to the contractor.
Sales Tax Exemption
New Jersey exempts qualifying solar energy devices and systems from sales tax. The exemption may cover equipment used to generate, transfer or store solar energy. Ask the installer to show the exemption on the proposal and final invoice.
Property Tax Exemption
A qualifying renewable energy system may receive a New Jersey property-tax exemption. The system generally must be certified by the local enforcing agency, usually the municipal construction official.
What Makes a New Jersey Solar Quote More Expensive?
Two systems with the same capacity can have different prices. Common cost factors include:
- Roof complexity: Multiple roof sections, steep slopes and difficult access add labor.
- Roof repairs or replacement: An installer may require roof work before installation.
- Electrical upgrades: A service-panel replacement, main-breaker upgrade or other electrical work can increase the price.
- Shading: Trees and nearby buildings may require a larger system or different equipment.
- Equipment choice: Premium panels, microinverters and longer warranties can raise the price.
- Battery storage: A battery is usually priced separately and can add significantly to the project cost.
- System size: Larger systems cost more overall, although their price per watt may be lower.
- Financing: A solar loan may lower the upfront payment but increase the total paid through interest and fees.
What Price per Watt Is Reasonable in New Jersey?
Using the current estimate of $2.58 per watt, rough prices are:
- 6 kW system: About $15,500
- 8 kW system: About $20,700
- 10 kW system: About $25,800
- 12 kW system: About $31,000
A higher quote is not automatically unreasonable. It may include roof work, an electrical-panel upgrade, difficult installation conditions or a battery. The installer should explain each extra charge in writing.
When comparing quotes, review:
- Cash price and price per watt
- Estimated annual electricity production
- Panel and inverter warranties
- Permit and utility-interconnection costs
- Roof repair or replacement requirements
- Loan interest rate, fees and escalator provisions
- Who receives SREC-II payments
- Whether battery storage is included or priced separately
Bottom Line
Plan on approximately $13,000 to $21,000 for a 5 to 8 kW system or $26,000 to $32,000 for a 10 to 12.36 kW system in New Jersey, before applicable incentives and SREC-II earnings.
For a 2026 installation, start with the full purchase price. Then calculate SREC-II payments, net-metering credits and tax exemptions separately. Do not assume an automatic 30% federal tax reduction.