Stilwell Solar
Stilwell Solar is a Florida-based solar contractor founded in 1981 that designs, installs, and services residential and commercial solar PV, solar pool heating, battery backup, and electric pool heater systems across Southwest Florida and the East Coast.
- Company typePrivate
- Founded1981
- HeadquartersEstero, United States
- Headcount11–50
- GTM typeB2B and B2C
- OfferingServices
What Stilwell Solar does
Stilwell Solar, LLC is a privately held Florida solar energy contractor founded in 1981 and headquartered in Estero, Florida. The company designs, installs, and services residential and commercial solar photovoltaic (PV) systems, solar thermal pool heating using Aquatherm black polypropylene collectors, home battery storage systems with smart electric panels, and electric pool heaters. With a workforce of 11-50 employees (no subcontractors), it has installed more than 25,000 systems over four decades, operating as the exclusive Aquatherm Solar Industries Master Dealer in Southwest Florida and holding state contractor licenses plus certifications from Tesla, Enphase, Unirac, and Hyperion.
The company generates revenue primarily through one-time installation contracts for solar PV, pool heating, and battery systems, with residential pool heating tickets typically ranging from $3,500 to $7,500 and full solar PV systems priced larger based on size and configuration. Additional revenue comes from solar repair and service contracts (including a $199/year monitoring subscription) and large-scale commercial projects such as a 12MW ground mount with single axis trackers in Godfrey, Illinois, a 524kW Broward County rooftop, and enterprise deployments for Monmouth University, Colavita, Fond Du Lac Cold Storage, and Peddie School. Residential customers access installations via $0 down financing through a partnership with Climate First Bank.
Stilwell Solar's go-to-market combines direct field sales for residential customers in Lee, Collier, and Charlotte counties with a dedicated commercial business development team serving Florida statewide and the broader East Coast. Marketing relies on localized SEO service area pages, content marketing through blog resources, Google Ads remarketing, BBB accreditation, and customer referral networks. Pricing benefits from federal 30% tax credits, a Florida 100% property tax exemption on residential solar value, and projected 2-4 year payback periods for pool heating systems, supporting a sales narrative centered on cost reduction, hurricane-driven outage resilience, and home value appreciation.
Stilwell Solar firmographics
Firmographics- Name
- Stilwell Solar
- Legal name
- Stilwell Solar, LLC
- Website
- https://stilwellsolar.com
- Company type
- Private
- Founded year
- 1981
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Stilwell Solar is a Florida-based solar contractor founded in 1981 that designs, installs, and services residential and commercial solar PV, solar pool heating, battery backup, and electric pool heater systems across Southwest Florida and the East Coast.
- Ownership category
- akta.pro rank
Stilwell Solar industry classification
Industry- Product category
- Solar Installation Services
- NAICS
- Solar Electric Power Generation (221114)
- SIC
- Water, Sewer, Pipeline, Comm & Power Line Construction (1623)
- akta.pro primary industry
- Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB)
- akta.pro secondary industries
- Solar Roofing & Roof-Mounted PV Systems (IMADAFAO), Solar Thermal & CSP Systems (Collectors, Receivers, Thermal Storage, CSP EPC) (EUAMABAL), Solar Mounting, Racking & Trackers (Fixed-Tilt, Single/Dual-Axis, Rooftop Mounts) (EUAMABAF), PV Balance of System (BOS) & Electrical Infrastructure (Inverters, Transformers, Cabling, Substations) (EUACAGAC)
Keywords
Where Stilwell Solar is headquartered
LocationHeadquarters
- HQ city
- Estero
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Stilwell Solar business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Personnel, Supply Chain, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Solar Panel Installation: Residential and commercial whole-home solar electricity system installations. Revenue generated from equipment, installation, permitting, and interconnection services. Customers can finance with $0 down through partner lenders.
- Solar Pool Heating Systems: Installation of solar thermal pool heating systems using Aquatherm collectors. Typical installation costs range from $3,500 to $7,500 with payback periods of 2-4 years. No ongoing operational costs once installed.
- Electric Pool Heaters: Heat pump pool heaters with titanium exchangers for residential and commercial pools. Swimming season extension with consistent heating.
- Service and Repair: Solar system repair and maintenance services for both Stilwell-installed systems and competitive brands. Annual monitoring service available for $199/year.
- Battery Storage Add-ons: Home battery backup systems and smart panels sold as add-ons to existing solar installations or standalone grid-connected storage solutions.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | Solar Pool Heating Systems |
| Hybrid | Monthly | $0 Down Solar Financing |
| Subscription | Annual | Annual Monitoring Service |
| Unit Pricing | Pay-as-you-go | Home Battery Storage |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
Stilwell Solar product offering
Product offeringCore offering
Stilwell Solar designs, sells, and installs residential and commercial solar photovoltaic (PV) electricity systems, solar thermal pool heating systems, electric heat pump pool heaters, and home battery backup/smart panel storage solutions. The company also provides solar system repair and maintenance services and an annual monitoring subscription. All installations are performed by in-house employees across Southwest Florida (residential) and Florida plus the U.S. East Coast (commercial).
Product overview
Stilwell Solar is a residential and commercial solar energy provider offering a portfolio of interconnected products centered on solar electricity generation and pool heating solutions. The core offerings include Whole Home Solar Electricity (PV panels) and Solar Pool Heating, supplemented by Electric Pool Heaters and Commercial Solar installations. Battery storage is available as Home Battery Backup, with Smart Panels enabling advanced energy management. The company provides Solar Financing ($0 down) to make installations accessible. Solar Repair services support all product lines. Hybrid systems combining solar and electric pool heating are also offered. All products are designed, installed, and serviced by company employees with no subcontracting.
Differentiator
Problem solved
Functional benefit
Products and services
- Whole Home Solar Electricity
Quantifiable outcome
- Solar pool heating systems pay for themselves in 2-4 years with no ongoing operational costs
- +5 more outcomes
Companies that use Stilwell Solar
Customer profileNamed customers8 records
Segments4 records
Ideal customer profiles2 records
Stilwell Solar technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Stilwell Solar partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered flagship and core.
- Aquatherm Solar IndustriesflagshipExclusive Master Dealer in Southwest Florida for Aquatherm solar pool heating products. Aquatherm is the largest manufacturer of swimming pool solar components in North America with 40+ years of experience. Products feature highest BTU rating and 93.5% thermal efficiency (FSEC Cert#00617). Made in USA from Lakewood, NJ facility.
- TeslacoreCertified installer partner for Tesla solar products. Certification indicates staff training and technical capability to install Tesla solar systems.
- EnphasecoreCertified installer for Enphase energy products including microinverters and battery storage systems. Indicates technical certification for installation and service.
- UniraccoreCertified installer partner for Unirac solar mounting and racking solutions. Technical certification for proper installation of mounting hardware.
- HyperioncoreCertified installer partner for Hyperion solar products. Technical certification indicating installation and service capability.
Scale indicators6 records
Recent moves6 records
Expansion highlights6 records
Stilwell Solar competitors and assessment
Company assessmentDirect peers
- Blue Raven Solar: Residential-focused solar installer with in-house installation crews, dealer-financed offerings, and a multi-state presence. Closely aligned with Stilwell's residential direct-to-consumer model and $0-down financing approach.
- Momentum Solar: Residential solar installer operating across the eastern U.S. with in-house crews and direct sales motion. Comparable in GTM (consultative, in-house) and product mix (PV + battery) to Stilwell's residential offering.
- Baker Electric Home Energy: California-based residential and commercial solar, storage, and EV charging installer with in-house crews. Comparable as a multi-decade, vertically integrated regional solar contractor with commercial project capability.
- Renu Energy Solutions: Southeast U.S. (Carolinas/Florida) residential and commercial solar installer with PV, storage, and roofing offerings. Closely comparable as a regional, vertically integrated installer with overlapping geography in Florida.
- Freedom Forever: U.S. residential and commercial solar installer with a multi-state operating model, in-house installation crews, and a focus on direct-to-consumer sales. Closely comparable to Stilwell's vertically integrated installation and service approach.
Regional players
- Green Power Energy: Northeast U.S. residential and commercial solar installer with in-house crews and storage offerings. Comparable product mix and GTM, though operating in a different geography (Northeast vs. Southeast).
Broad incumbents
- Tesla Energy: Tesla's solar and Powerwall business delivers residential PV and battery systems, often through certified installer networks that include Stilwell. Represents both a partner (Tesla-certified installer) and a direct competitive threat in residential storage.
- Sunrun: Largest U.S. residential solar, storage, and energy services company with national footprint. Directly competes with Stilwell's residential PV and battery offerings, but operates at vastly greater scale across multiple states.
- ADT Solar: National residential solar and battery installer backed by ADT's brand and customer base. Competes with Stilwell in residential PV and storage, particularly in Florida where ADT has significant brand recognition.
Others
- Aquatherm Solar Industries: Manufacturer of solar pool heating collectors and Stilwell's exclusive supplier partner. Not a competitor — represents an upstream technology partner — but is a critical ecosystem participant given Stilwell's Master Dealer exclusivity.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Stilwell Solar social profiles
Digital presenceStilwell Solar compliance and trust
Trust signalCompliance9 records
Stilwell Solar financial estimates
Financial estimateRevenue estimate
Valuation estimate
Stilwell Solar leadership team
Management profileNumber of profiles
Profiles1 record
Stilwell Solar funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Stilwell Solar M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Stilwell Solar
What does Stilwell Solar do?
Stilwell Solar designs, sells, and installs residential and commercial solar photovoltaic (PV) electricity systems, solar thermal pool heating systems, electric heat pump pool heaters, and home battery backup/smart panel storage solutions. The company also provides solar system repair and maintenance services and an annual monitoring subscription. All installations are performed by in-house employees across Southwest Florida (residential) and Florida plus the U.S. East Coast (commercial).
Is Stilwell Solar a public or private company?
Stilwell Solar is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Stilwell Solar founded?
Stilwell Solar was founded in 1981. It employs 11 to 50 people.
Where is Stilwell Solar based?
Stilwell Solar is headquartered in Estero, United States, in the North America region.
How does Stilwell Solar make money?
Five revenue lines are on record. Solar Panel Installation is the primary driver. The others are solar Pool Heating Systems, electric Pool Heaters, service and Repair and battery Storage Add-ons.
Who are Stilwell Solar's main competitors?
Direct peers on record are Blue Raven Solar, Momentum Solar, Baker Electric Home Energy, Renu Energy Solutions and Freedom Forever. Green Power Energy is listed as a regional player. Broad incumbents are Tesla Energy, Sunrun and ADT Solar. Aquatherm Solar Industries is listed as an others.
Does Stilwell Solar have an API?
No public API is recorded for Stilwell Solar.
What industry is Stilwell Solar in?
Stilwell Solar's product category is Solar Installation Services. Its primary akta.pro industry code is EUAMABAB, Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System), with a secondary code of IMADAFAO, Solar Roofing & Roof-Mounted PV Systems. Its NAICS code is 221114 and its SIC code is 1623.