Sunwise Energy installs residential and commercial solar across Mercer County, serving Princeton, Trenton, Hamilton, West Windsor, Ewing, Lawrence, Hopewell, Robbinsville, and every community in New Jersey’s capital county. PSE&G serves most of Mercer County at around 26 cents per kWh and climbing. New Jersey’s SuSI incentive program, 1:1 net metering, and full property and sales tax exemptions make Mercer County one of the strongest solar markets in the state.
| Detail | Value |
|---|---|
| Utility | PSE&G (majority); JCP&L (eastern portionr |
| Rate Trend | Rising: ~26 cents/kWh (PSE&G), continued year-over-year increases |
| NJ Incentive 1 | SuSI ADI ($85/MWh for 15 years) |
| NJ Incentive 2 | 1:1 retail-rate net metering (PSE&G and JCP&L) |
| Sales Tax | Full sales tax exemption on solar equipment |
| Property Tax | 100% property tax exemption on added solar value |
| Equipment | Premium panels + microinverters |
| Permitting | Municipal level (12 municipalities, most streamlined in NJ) |
| Installer | Sunwise Energy, in-house crews, licensed in DE/PA/NJ |
Residential, commercial, and battery storage for New Jersey’s capital county.
Mercer County’s housing ranges from Trenton’s urban rowhomes to Princeton’s historic estates and the growing suburban developments in West Windsor, Robbinsville, and Hamilton. PSE&G and JCP&L customers can offset most or all of their utility bill with a system using premium panels and microinverters.
Mercer County’s economy spans state government, the Route 1 corporate corridor, major universities, healthcare systems, and a growing logistics sector. Business owners can take advantage of the federal Investment Tax Credit (available through July 4, 2026), accelerated depreciation, NJ SuSI payments, and net metering.
Pairing solar with a battery keeps your home running during PSE&G outages and maximizes every kilowatt-hour your system produces. If your roof needs work first, Sunwise bundles roofing and solar into a single project.
PSE&G serves most of Mercer County, and residential rates currently average around 26 cents per kWh, a number that continues to climb year over year. New Jersey’s incentive stack is among the strongest in the nation: the SuSI ADI program pays $85 per MWh for 15 years, 1:1 net metering credits excess production at the full retail rate, solar equipment is exempt from NJ sales tax, and the value solar adds to your home is 100 percent exempt from property taxes. New Jersey’s SuSI ADI program, property tax exemption, and sales tax exemption create a structurally stronger incentive stack than Pennsylvania’s, which lacks both tax exemptions. For business owners, the federal Investment Tax Credit remains available through July 4, 2026.
A Sunwise Energy Specialist reviews your PSE&G or JCP&L billing history, roof condition, and sun exposure to design a system sized to your actual consumption.
We create a custom system design and handle all permitting. Mercer County’s 12 municipalities each manage their own construction office. Sunwise coordinates every submission and inspection.
Our in-house crews complete residential systems in less than a day using premium panels and microinverters, handling all electrical work, racking, and wiring to meet New Jersey code.
Sunwise coordinates your PSE&G or JCP&L interconnection and meter swap. Once your utility grants Permission to Operate, your system goes live: producing power, earning net metering credits, and generating SuSI ADI payments.
During your visit, a Sunwise Energy Specialist will:
A consultation is free, pressure-free, and designed to help you understand whether solar truly makes sense for your home.
Mercer County has just 12 municipalities, the fewest of any county in New Jersey, but each one offers strong solar potential. From the state capital to one of the world's most prestigious university towns, Sunwise installs across the entire county.
Internationally recognized for Princeton University, the town features a mix of historic estates, colonial-era homes, and newer construction. Larger homes with higher energy consumption make for strong solar economics. Mature tree canopy in some neighborhoods requires careful shade analysis, but homes that clear the assessment support premium solar installations with fast payback.
Home to the University of Delaware, Newark features a mix of residential neighborhoods, student housing, and commercial corridors. Single-family homes in the surrounding areas of Bear, Glasgow, and Christiana offer excellent solar conditions with minimal shading.
The county's most populous municipality with over 92,000 residents. Hamilton features a diverse housing stock from mid-century ranches to newer suburban developments. The township's mix of residential neighborhoods and commercial corridors along Route 130 supports both home and business solar.
One of New Jersey's highest-income communities, with newer suburban developments, larger homes, and high energy consumption that translates to strong solar economics. West Windsor's open lot designs and newer roof construction are well suited for solar.
Home to The College of New Jersey and Trenton-Mercer Airport. Ewing features a mix of established residential neighborhoods and institutional properties. Mid-century homes and newer construction both support residential solar.
A growing suburban township between Trenton and Princeton with a mix of residential developments, the Quaker Bridge Mall area, and commercial corridors. Strong roof exposure and suburban lot sizes make Lawrence an active solar market.
The western part of the county features more rural character with larger properties, fewer shading constraints, and excellent solar exposure. Hopewell Borough's walkable downtown and the surrounding township's estate-style properties both support solar installations.
One of Mercer County's fastest-growing communities, with newer residential construction, a significant warehouse and distribution presence, and high median household income. Both residential and commercial solar opportunities are strong here.
Eastern Mercer County communities with a mix of suburban developments, townhome communities, and older borough housing. Parts of this area may be served by JCP&L rather than PSE&G. Sunwise confirms your provider during your consultation.
A small, affluent borough with historic charm and larger homes. Rising PSE&G rates and NJ's full incentive stack make Pennington homeowners strong solar candidates.
We also provide solar installation throughout New Jersey. → View all NJ locations
The cost of a solar system in Mercer County depends on your home’s energy usage, roof size, layout, and complexity, so there is no single price. New Jersey’s incentive stack significantly reduces the effective cost: the SuSI ADI program pays $85 per MWh for 15 years, PSE&G provides 1:1 net metering, and NJ offers both a property tax exemption and full sales tax exemption on solar equipment. $0-down financing, lease, and PPA options make solar accessible without upfront investment. Commercial property owners can also take advantage of the federal Investment Tax Credit through July 4, 2026. The best way to get an accurate number is to schedule a free consultation with a Sunwise Energy Specialist.
PSE&G serves the majority of Mercer County and provides 1:1 retail-rate net metering, with residential rates currently averaging around 26 cents per kWh. Served municipalities include Trenton, Princeton, Hamilton, Ewing, Lawrence, West Windsor, Hopewell, and Pennington. Some eastern portions of the county, including parts of Robbinsville and East Windsor, may be served by JCP&L, which also supports 1:1 net metering. Sunwise will confirm your provider during your consultation.
Mercer County homeowners can access four key New Jersey solar incentives: the SuSI ADI program ($85/MWh for 15 years), 100 percent property tax exemption on added home value, full sales tax exemption on solar equipment, and 1:1 retail-rate net metering from PSE&G or JCP&L. This incentive stack is structurally stronger than neighboring Pennsylvania’s, which lacks both property tax and sales tax exemptions for solar. The federal residential tax credit is no longer available to homeowners. Business owners can claim the federal Investment Tax Credit (Section 48E) through July 4, 2026.
Solar permits in Mercer County are managed at the municipal level across just 12 municipalities, making it more streamlined than most NJ counties. Each municipality has its own construction office, and requirements vary between Trenton, Princeton, Hamilton, West Windsor, and other jurisdictions. Sunwise handles all permit applications, inspections, and coordination on your behalf.
Yes, Princeton and West Windsor offer some of the strongest solar economics in New Jersey due to larger homes, higher energy consumption, and PSE&G bills that can exceed $300 per month. Solar locks in a fixed energy cost and protects against continued PSE&G rate increases. Combined with the SuSI ADI program paying $85 per MWh for 15 years and NJ’s full property and sales tax exemptions, the return on solar in these communities is among the strongest in the state. Shade analysis is important in Princeton’s mature tree canopy neighborhoods, but homes that clear the assessment support larger systems with fast payback.
Yes, Mercer County’s diverse economy, including state government facilities in Trenton, the Route 1 corporate corridor, major universities and healthcare systems, and a growing logistics sector in Hamilton and Robbinsville, creates strong commercial solar potential. Businesses can take advantage of the 30 percent federal Investment Tax Credit (available through July 4, 2026), accelerated depreciation, NJ SuSI payments, and net metering. Flat-roof office buildings, government facilities, warehouses, and institutional campuses are ideal for commercial solar.
Schedule a free consultation with a Sunwise Energy Specialist. We’ll assess your home, design a custom system, and walk you through your savings with a dedicated in-house team from start to finish.
$0-down financing, loan, and lease options available. NJ's SuSI program ($85/MWh for 15 years), property tax exemption, and sales tax exemption make going solar more affordable than ever.
