The Tri-State Area’s Top Solar Installers
Solar installation Downingtown PA homes and businesses can own starts with your PECO bills, not a sales script. We design your system from your real usage, handle the borough or township permit and the PECO paperwork, and stay on after install day.
Family owned since 2009
400+ projects in PA, NJ, DE and MD
Enphase Platinum Installer
Owned systems only
What is the best solar company in Downingtown, PA?
TerraSol Energies, a family-owned company based in Chadds Ford that has been serving Pennsylvania, NJ, DE, and MD since 2009, installs solar systems that Downingtown property owners, both residential and commercial, fully own. The company has successfully completed over 400 projects, handling in-house engineering and managing grid interconnection with PECO.
A Homeowner from Downingtown, PA was gearing up to buy a second fully electric vehicle for his family. However, he faced a challenge: with two EVs charging each day for his and his wife’s commutes, he’d be looking at an annual electricity consumption increase of about 44% in the coming year.
Already committed to renewable energy, He made it his goal not just to produce 100% of his home electricity usage through a renewable solar energy system, but to ensure the future increase would be covered as well.
He enlisted TerraSol to plan and implement a solution to reach this ambitious target.
This homeowner in Downingtown, PA trusted TerraSol to install a solar system on the front of his house that would not take away from his curb appeal. TerraSol delivered by keeping the project tidy, hiding wires and racking components out of sight. The effect is solar panels floating on a roof.
This homeowner knew immediately when they bought this home that they wanted to add solar to the equation. Luck for them their house was situated perfectly for year round solar production. With the front roof facing directly south, this solar system will maximize performance even in the dead of winter.
Throughout the entire process from quoting to project closure the team at TerraSol was amazing. Rob and Rasha were very thorough, professional, and quick to respond to any questions I had. The installation team was very efficient and had the panels installed in less than a day. The only issue we had was with the new bidirectional meter install by PECO due to leftover supply chain issues related to the pandemic, which had nothing to do with TerraSol, but even then they were in constant contact with PECO and provided me regular status updates until my new meter was installed. If you are looking for a friendly top notch professional team for your solar panel quote look no further.
Our proposals are based on installations completed in Downingtown, then adjusted for shading, your roof’s sunlight exposure, and your energy consumption. Discover our battery backup, EV charging, and other services below.
≈ 1,300 kWh
Estimated annual energy production per kW based on our five residential installations for Downingtown homeowners. This serves as the baseline for sizing your own system.
Residential solar panelsRooftop systems sized based on your PECO bills, with future loads taken into consideration
Additional roof load of approximately 3 to 4 pounds per square foot (approx. 15 to 20 kg/m²)
Concealed wiring and mounting structures on street-facing roof sections
Expandable to accommodate a new electric vehicle (like the Downingtown family that owns two EVs)
Battery backup
Grid-tied solar systems shut down during outages, even when the sun is shining. A battery keeps essential equipment powered. In West Grove, we paired solar with a 400 kWh iron-flow battery capable of running for over 24 hours without recharging.
Rooftop systems that turn a monthly bill into an investment you own
In-house electrical, mechanical, and structural engineering
Section 48E tax credit for projects starting construction now and placed in service by December 31, 2027
C-PACE financing for commercial property
EV charging
Charge your vehicle using your own rooftop solar for both city and highway driving. PECO’s Flex & Save program offers up to $120 per year for off-peak charging. We install Level 2 and Level 3 charging stations for businesses.
The elective pay mechanism allows tax-exempt organizations to access the federal commercial tax credit
Completed for St. Paul’s Episcopal Church in Exton
Completed for the Unionville-Chadds Ford School District
Our solar installation fully meets the energy needs of the West Goshen Township Public Works Department
Monitoring and maintenance
Our solar maintenance team handles monitoring, repairs due to wear and tear, and panel removal when customers need to replace their roof, so each system keeps its efficiency.
TerraSol Energies installed five residential solar systems in Downingtown, Pennsylvania, totaling 48.31 kW of capacity across 123 panels. These installations, ranging in capacity from 7.83 kW to 14 kW, are expected to generate a total of 62,797 kWh annually, or approximately 1,300 kWh per installed kW. The fastest installation was completed in less than a day.
5 – Home systems in Downingtown 48.31 kW – Combined system size 62,797 – Estimated kWh per year ≈1,300 kWh per kW per year| Project | System size | Panels | Est. kWh per year | Highlight |
|---|---|---|---|---|
| Two-EV family | 14.00 kW | 40 × 350 W | 18,200 | Sized for the home plus two daily EV commutes |
| Energy-efficient home | 9.60 kW | 24 × 400 W | 12,480 | Offsets 100% of yearly usage |
| Front-roof system | 8.80 kW | 22 × 400 W | 11,440 | Hidden wiring and racking for curb appeal |
| South-facing roof | 7.83 kW | 18 × 435 W | 10,179 | Strong production all year, even in winter |
| One-day install | 8.08 kW | 19 × 425 W | 10,498 | Installed in less than a day |
Two tips when you compare solar companies: ask which solar installers handle the permit and the PECO paperwork themselves, and ask for production numbers from homes in your area. We run the whole installation process in house, and that’s where our engineering expertise comes in.
Site visit. A crucial roof check for structure, orientation, shade, and signs of wear.
Engineering. Electrical, mechanical, and structural, all in house.
Permits. Filed with the borough or your township.
PECO approval. Interconnection application and meter coordination.
Installation. Our own crew. One Downingtown home took less than a day.
Incentives. SREC registration and your $500 PECO rebate within its 90-day window.
Leasing offers across PA, Downingtown included, are currently ubiquitous because leasing companies can still benefit from a federal tax credit that PA solar homeowners are no longer eligible for after 2025.
As a family-owned solar panel installation company, we only undertake projects where you become the owner. Here is how your money, from the average price you pay to your solar savings, is used in each scenario
Own it · what we install
Upfront: About $2.53 per watt in Downingtown, paid in cash or with a loan
Savings: You keep 100% of what the system saves on your energy bills
Incentives: PECO rebate, state SRECs, and net metering credits go to you
Payback: 8.88.8 years on average in Downingtown
Selling: Adds value, with no contract for your buyer to take over
Lease or PPA
Upfront: Usually $0 down
Savings: The third-party owner keeps a significant share
Incentives: The leasing company claims the federal commercial credit
Payments: Often rise 1% to 3.5% a year
Selling: Your buyer must qualify for and take over the contract
Contact our team with a recent PECO bill and tell us about your home, business, or organization.
We’ll check your roof, design around your real usage, and show you the price, payback, and how much solar can cut your electricity bills before you make the switch. If solar isn’t the right fit, I’ll tell you.
Call (888) 873-9995 or request a proposal to get your solar installation Downingtown PA project started.
Costs vary depending on the system size, roof configuration, equipment quality, and available incentives. TerraSol provides structured financial modeling following a structural and electrical assessment, rather than instant online quotes.
The number of panels depends on energy consumption, roof orientation, shading, and the system's performance goals. We model the projected solar energy production before finalizing the system size.
Divide your annual electricity consumption (in kWh) by approximately 1,300. Our production estimates for five Downingtown households show an average yield of about 1,300 kWh per year for every kW of installed panels; therefore, a household consuming 10,400 kWh annually requires a system of approximately 8 kW.
Qualified projects may be eligible for the federal tax credit and applicable Pennsylvania incentives. Eligibility is evaluated during the engineering and proposal process.
No, not for Pennsylvania homeowners who own their systems, because the Section 25D credit expired for residential systems placed in service after December 31, 2025. However, business-owned systems may still qualify for the Section 48E credit if construction begins after July 4, 2026, and they are placed in service by December 31, 2027.
The installation process includes engineering validation, permitting, utility approvals, equipment procurement, installation, inspection, and commissioning. Timelines vary depending on township and grid coordination.
See what our customers say about TerraSol
TerraSol Energies, Inc. develops and manages turnkey solar solutions that provide renewable energy means for homeowners, business owners, and non-profits.
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