Best Solar Companies in PA: Top 5 Solar Installers You Can Trust

If you’ve been thinking about switching to solar energy, you’re not alone. Across Pennsylvania, homeowners are making the move to clean, renewable power, cutting their utility bills and shrinking their carbon footprint at the same time. But here’s the tricky part: finding a solar installer that actually delivers on what they promise.

To make things easier, we’ve done the legwork and pulled together a list of Pennsylvania’s five best solar companies, based on real customer experiences, craftsmanship, and long-term value. And right at the top of that list is a name that’s been earning trust for years, Belmont Solar. We realize that coming from us, this might sound a bit biased, but we’ve done our best to keep this list fair and informative so you can see how Belmont compares to other top installers in the state.

1. Belmont Solar – Leading the Way in Pennsylvania Solar

If there’s one company that truly stands out for quality and integrity, it’s Belmont Solar. Based in Lancaster County, Belmont has been helping Pennsylvanians harness solar energy long before it became mainstream. What makes them different is their combination of technical expertise and old-fashioned customer care.

Here’s why Belmont Solar tops the list:

• Tailored system designs: Instead of one-size-fits-all packages, they design each system based on your energy needs, roof layout, and budget.
  
• Off-grid and hybrid options: Belmont is one of the few solar companies in PA offering advanced off-grid and hybrid solar setups for rural areas or energy independence.
  
• Local craftsmanship: Every installation reflects Lancaster County’s strong tradition of quality work and honest service.
  
• Trusted experience: With over 20 years in business, their team knows Pennsylvania’s permitting process and incentive programs inside and out.

From start to finish, Belmont Solar focuses on doing the job right, and its reputation proves it. Belmont is the clear choice for homeowners who want a reliable, long-term solar partner.

2. Exact Solar

Based in Bucks County and serving Pennsylvania, New Jersey, and Delaware, Exact Solar is a locally-owned installer with deep roots in the region (founded in 2005).

Why Exact Solar stands out

• They emphasize a full in-house team (installers, master electricians, engineers) rather than heavy subcontracting.
  
• They’ve been recognized by local sources: e.g., named “Philly’s Favorite Solar Installer” by the Philadelphia Inquirer, and are BBB accredited with A+ rating.
  
• Their service span is broad: they handle residential and small commercial systems, including solar PV, solar water heating, and solar pool heating.
  
• Their customer-oriented approach focuses on education and transparency: they help homeowners understand how solar works, what the life-cycle looks like, and what maintenance is needed.

What to consider

If you’re in southeast Pennsylvania (Philadelphia region, Bucks/Montgomery counties), Exact Solar is a very strong choice. If you’re farther out or have very large commercial needs, you’ll want to compare capacity, timelines, and whether they’ll subcontract.

3. Paradise Energy Solutions

Headquartered in Lancaster County (Paradise, PA), this family-owned company has carved a niche in residential, agricultural (farms), and business solar installations across Pennsylvania. 

Why Paradise Energy Solutions stands out

• They provide not just installation but ongoing support: for example, they offer a maintenance plan called “Paradise Protects” to keep your system performing well over time.
  
• Their services span homes, farms, and businesses, useful if you have agricultural roof space or a large property.
  
• Strong customer reviews and reputation in the local area: reviews consistently report good value and attention to detail in installation.
  
• They take care of everything from design, permitting, installation (roof or ground mount), and follow-up maintenance.

What to consider

If you have a farm, a large roof, or are looking for long-term service + maintenance, Paradise is a strong option. Ask about how many current ongoing service agreements they have and what their response time is for maintenance or repair.

4. Solar SME

A Pennsylvania-based certified solar installation company that serves 11 states (including PA) and offers customized systems and backup power solutions. 

Why Solar SME stands out

• They emphasize a custom design based on your specific energy needs, not just a standard panel-kit.
  
• They include energy storage and EV charger options,  useful if you’re thinking beyond just solar panels and want battery backup or EV integration.
  
• They claim fast turnaround (“system up and running in less than 12 weeks”) and flexible financing.

What to consider

While they serve multiple states, you’ll want to confirm their local Pennsylvania team, local references, and how strong their local support is (versus a more national model). They could be a good fit if you want more than just panels (storage, EV charger, etc.).

5. Momentum Solar

A national solar company with a presence in Pennsylvania (including a Lancaster location) offering full-service installations for homeowners.

Why Momentum Solar stands out

• They provide a full start-to-finish experience, from consultation and design to installation, permitting, interconnection, and long-term support.
  
• They handle battery backups and larger system configurations, useful if you have high energy use or desire resilience (e.g., during outages).
  
• They have a Lancaster, PA office location, which means easier local support/visits. 

What to consider

While national companies offer scale and sometimes better pricing, local oversight and responsiveness can sometimes be less personal than smaller local firms. Because solar means long-term service, ask about how local their servicing teams are, warranty responsiveness, and whether they subcontract.

Finding the Right Solar Partner in PA

The best solar company for your home really depends on what matters most to you, whether that’s local experience, pricing, technology options, or long-term maintenance. Each of the companies on this list brings something valuable to the table.

That said, Belmont Solar continues to stand out for its long history of honest craftsmanship and deep community roots in Pennsylvania. If reliability, hands-on service, and tailored design are high on your list, Belmont is a choice that’s hard to beat. But whichever installer you choose, the right solar partner will be one that aligns with your goals and helps you make the most of your switch to clean energy.