How to start a solar business
Pick your business model first (sales, install, or full service), then form the company, line up the electrical licensing your state requires, insure, and build your pricing around the incentive rules that apply in 2026, not the ones that applied in 2024.
To start a solar business, decide what kind of solar company you will be (a sales dealer, an installer that subcontracts for sales companies, a full-service installer, or a service and maintenance shop), register an entity, get an EIN, secure the contractor and electrical licensing your state requires, buy insurance, train or hire certified installers, choose equipment suppliers and financing partners, and set up a system that tracks every job from contract through utility approval. The incentive picture changed in 2025, so build the plan on current rules. The IRS states the Residential Clean Energy Credit is not allowed for expenditures made after December 31, 2025.
Choose your solar business model
| Model | What you do | What it takes |
|---|---|---|
| Sales dealer | Sell systems; a partner designs and installs | Sales team, partner contracts, commission tracking |
| Install subcontractor | Install for sales companies or larger installers | Licensed crews, insurance, reliable schedule |
| Full-service installer | Sell, design, permit, install, and service | Licensing, crews, design tools, working capital |
| Service and O&M | Repairs, monitoring calls, panel cleaning, battery service | Electrical license, service software, parts |
| Commercial installer | Rooftop and ground mount for businesses and public owners | Engineering, bonding, progress billing, sometimes prevailing wage |
Many new companies start as install subcontractors because the sales and financing side takes money and time to build. Others start with service work on existing systems, which needs less capital.
Step by step: starting a solar company
- Write a business plan. The U.S. Small Business Administration describes a traditional plan with sections including market analysis, service line, marketing and sales, funding request, and financial projections, or a one-page lean plan. For solar, the financial projections should assume no homeowner federal credit on systems purchased in 2026.
- Register the entity and get an EIN. Form an LLC or corporation with your state, then get an EIN from the IRS. The IRS says the EIN is free and warns against sites that charge for it.
- Get licensed. Solar touches roofing, structural, and electrical work. Some states require a license for PV installers, according to the Bureau of Labor Statistics, and the electrical tie-in usually requires a licensed electrician or electrical contractor. Start at the contractor license hub and confirm with your state board and local building departments.
- Earn credentials. NABCEP offers board certifications including the PV Installation Professional and the Energy Storage Installation Professional, plus associate credentials. BLS notes certification is not required for employment but shows competency, and some states require it for subsidized projects.
- Buy insurance. General liability insurance, workers' compensation once you hire, commercial auto, and often inland marine coverage for equipment in transit and on site.
- Set up safety. Rooftop work 6 feet or more above a lower level falls under OSHA fall protection rules in residential construction. Electrical work adds its own hazards. Write a safety plan and train crews before the first install.
- Get bonded if needed. License bonds may apply, and commercial work often requires performance bonds. The U.S. Small Business Administration's Surety Bond Guarantee program covers eligible contracts up to $9 million for non-federal work.
- Line up suppliers and financing partners. Pick a distributor for panels, inverters, racking, and batteries. If you sell loans, leases, or power purchase agreements, set up those partners and learn their milestone payment rules.
- Build your pricing. Price per watt from your real costs, not a competitor's ad. See how to price solar jobs.
Plan around the 2025 incentive changes
The 2025 tax law, Public Law 119-21 (commonly called the One Big Beautiful Bill), ended the homeowner credit early. The IRS lists the Residential Clean Energy Credit as not allowed for expenditures made after December 31, 2025. That changes the sales pitch for cash and loan deals in 2026: payback has to stand on utility savings and any state or utility programs.
Business and third-party-owned systems, such as leases and power purchase agreements, rely on the clean electricity credits. According to KPMG's summary of IRS Notice 2025-42, wind and solar facilities placed in service after December 31, 2027 whose construction begins after July 4, 2026 no longer qualify. Rules on what counts as beginning construction are technical, so work with a tax advisor and your financing partners before you promise a customer anything.
Startup cost categories
No single startup figure fits every solar company. A two-person service shop and a full-service installer with a sales team need very different amounts of capital. Budget by category, and plan for slow cash: on many financed jobs, the final payment comes only after inspection and utility approval.
| Category | What it covers | Notes |
|---|---|---|
| Licensing and registration | Entity, contractor and electrical licenses, exams | Set by state and city |
| Insurance | General liability, workers' comp, auto, equipment coverage | Roof and electrical work raise rates |
| Training and certification | NABCEP exams, OSHA training, manufacturer training | Some manufacturers require it for warranty programs |
| Tools and safety gear | Fall protection, ladders, meters, drills, conduit tools | Required before the first job |
| Vehicles | Truck or van with ladder racks, trailer | Rent or lease at first if possible |
| Software | Design and proposal tool, project tracking, accounting | See the solar software guide |
| Working capital | Payroll, equipment deposits, waiting for milestone payments | Often the largest real need |
Workforce and hiring
Labor is a real constraint. The Bureau of Labor Statistics projects employment of solar photovoltaic installers to grow 37 percent from 2025 to 2035, and reports a median annual wage of $53,140 in May 2025. Installers typically get on-the-job training lasting up to a year. Plan to train your own people and pair new hires with an experienced lead and a licensed electrician.
Systems to set up early
Solar jobs stall in permits, interconnection, and inspections. Set up a stage board that shows every job's next step and owner from day one, plus a standard job folder for plan sets, permits, photos, and approval letters. Track job cost per watt so you know which job types make money. The solar software guide explains what to look for. Smart Business Automator tracks project stages, invoicing, equipment shipments, subcontractors, and job costs alongside your design tool.
Common mistakes new solar businesses make
- Building the business plan on incentives that ended or are ending.
- Growing sales faster than install and permit capacity, which creates a backlog of signed but stalled jobs.
- Underestimating working capital while waiting on milestone payments.
- Skipping roof condition checks, then removing and reinstalling panels for a roof replacement at your own cost.
- Letting a sales partner promise production or savings your design does not support.
- Treating the electrical tie-in as an afterthought instead of scheduling the licensed electrician as a planned step.
Frequently asked questions
Do I need an electrical license to start a solar business?
Often the electrical part of the work must be done by a licensed electrician or electrical contractor, and some states license PV installers specifically. Check your state's board through the contractor license hub and your local building department.
Is NABCEP certification required?
Not everywhere. BLS says certification is not required for employment but demonstrates competency, and some states require it for subsidized projects. Many customers, lenders, and manufacturers look for it.
Can homeowners still claim the federal solar tax credit?
The IRS states the Residential Clean Energy Credit is not allowed for expenditures made after December 31, 2025. Customers should check with a tax professional about their own situation.
What is the cheapest way to start a solar business?
Many start as install subcontractors or with service work on existing systems, which avoids the cost of a sales team and financing partnerships. Licensing, insurance, and safety still come first.
How long does a residential solar job take?
The install itself often takes a day or two, but permits, utility interconnection, and inspections can stretch the full timeline to weeks or months depending on the jurisdiction and utility.
Sources
- U.S. Small Business Administration: Write your business plan
- IRS: Get an employer identification number
- IRS: Residential Clean Energy Credit
- IRS: One, Big, Beautiful Bill provisions
- KPMG: Notice 2025-42 on beginning of construction for wind and solar credits
- Bureau of Labor Statistics: Solar Photovoltaic Installers, Occupational Outlook Handbook
- NABCEP: certifications
- 29 CFR 1926.501, Duty to have fall protection (Cornell LII)
- U.S. Small Business Administration: Surety bonds