Europe added 64 GW of solar capacity in 2023 — a 40% increase year-on-year. The panels are available, the incentives are in place, and the demand from homeowners and businesses is real. The bottleneck is installation capacity: there are not enough solar installers to meet current demand, and that gap is growing. If you've been considering starting a solar installation company, the timing is as good as it's been in a decade. This guide covers everything you need to make a sound decision and set up correctly — legal structure, startup costs, licensing, your first clients, and the six decisions that will define whether your company thrives or struggles.
What you'll learn in this chapter
- Whether solar is genuinely a good business to start in 2026 — with honest data on margins and risks
- How to choose the right legal structure for your market (UK, Germany, Italy, France, Spain)
- Realistic startup costs broken down by category — from €37K to €114K depending on ambition
- Your first 6 months: the milestone plan that avoids the most common failure mode
- How to get your first clients without spending money on ads
- Whether to start fresh or acquire an existing solar business
- The six decisions that define your company's character and long-term position
Is Solar a Good Business to Start in 2026?
The honest answer is yes — with caveats. Solar installation is one of the few sectors where structural demand growth is essentially guaranteed for the next decade. European governments have binding renewable energy targets, electricity prices remain elevated compared to pre-2021 levels, and panel costs have fallen enough that residential payback periods in most markets are now 6–10 years, which customers understand and accept. That combination — policy tailwind, favorable economics, and consumer awareness — creates consistent demand.
The limiting factor for growth in virtually every European market right now is installation capacity. Utility companies, national installers, and small local players are all reporting backlogs. This is the market signal you want to see when starting a trade-based business: demand exceeds supply, and customers are willing to wait.
Real margin benchmarks. Gross margins on residential solar installations — the margin on materials and direct labor before overheads — run 25–40% depending on your pricing, your material costs, and how efficiently your crews work. Net margins after vehicle costs, insurance, marketing, admin, and software are lower. Established solar installation companies typically achieve net margins of 8–15%. Early-stage companies are often at break-even or marginally negative in years one and two as overhead structures are built and lead generation costs are absorbed. Year three is typically where net margins normalize.
The risks are real and worth naming directly.
- Seasonality. In northern European markets, installation activity drops sharply in winter months. Germany, the Netherlands, and the UK all show 40–60% lower installation volumes in November–February compared to peak summer months. Cash flow planning must account for this from the start.
- Permitting delays. Grid connection applications and planning permits add weeks or months to some projects. In Germany, Netzanschluss applications with some DSOs are running 6–12 months behind. Italy's SUAP processes vary enormously by municipality. A project that takes 3 weeks to install can take 4 months from contract to grid connection. Your cash collection cycle is tied to this.
- Supply chain uncertainty. Panel and inverter prices have compressed significantly since 2023, largely driven by oversupply from Chinese manufacturers. This is good for system economics but creates pricing volatility. Quotes you give today need to account for material cost changes over a 3–6 month backlog period.
- Price competition. In mature markets like Germany and the Netherlands, solar installation has commodity characteristics in the residential segment. Price-only competition is a race to zero margin. Companies that survive and grow do so by differentiating on speed, quality, proposal professionalism, and after-sales support — not price. For more on building a growth strategy, see our solar business growth guide.
Pro Tip
Before committing to launch, spend 2–4 weeks speaking with 10–15 homeowners in your target area who have recently installed solar. Ask them how they chose their installer, what the process was like, and what they'd change. This gives you real customer insight and often surfaces the gaps that a new, well-run company can exploit: slow response times, poor communication during the project, proposal quality that wasn't clear. These are fixable with good process, not capital.
Choosing a Legal Structure
Legal structure affects your tax position, your personal liability exposure, your ability to raise capital, and your credibility with commercial clients. The right choice depends on your market, your starting capital, and your growth trajectory.
Sole trader / sole proprietor. The simplest structure: you register as a self-employed individual trading under your own name or a trading name. Setup costs are minimal, accounting is straightforward, and you can start generating revenue within days of registering. The downside is unlimited personal liability — if the business owes money or faces a claim, your personal assets are at risk. This structure works for the first 6–12 months if you're subcontracting all installation labor, operating on small projects, and have strong public liability insurance in place. It doesn't scale well and isn't suitable once you're hiring staff, taking on commercial projects, or holding significant inventory.
Limited company / GmbH / SRL / Ltd. The most common structure for solar installation companies beyond the startup phase. The company is a separate legal entity — your personal liability is limited to the value of your shares. Tax treatment is generally more favorable for profitable businesses. It signals credibility to commercial customers and larger residential clients. The cost is higher administration: annual accounts, statutory filings, and often an accountant. For most founders, the protection and credibility justify this overhead from year one.
Partnership. Relevant when two founders bring complementary skills — typically a technical founder (electrician, engineer) and a commercial founder (sales, operations). A formal partnership agreement defines profit sharing, decision-making authority, and exit provisions. In most European jurisdictions, a limited liability partnership (LLP in the UK, GmbH & Co. KG in Germany) offers liability protection while preserving the flexibility of partnership structure. Standard general partnerships carry joint and several unlimited liability — avoid them for anything beyond a temporary arrangement.
| Country | Main Structure | Min. Capital | Setup Cost | Key Feature |
|---|---|---|---|---|
| UK | Private Limited (Ltd) | £1 | £12–£50 | Register at Companies House; directors personally liable only for negligence |
| Germany | GmbH | €25,000 | €1,500–€3,000 | Requires notary; UG (haftungsbeschränkt) available with €1 min capital but limited credibility |
| Italy | SRL (S.r.l.) | €1 (SRL Semplificata) / €10,000 (standard) | €1,000–€2,500 | SRL Semplificata allows €1 capital for founders under 35; standard SRL more common for serious operations |
| France | SARL or SAS | €1 | €1,000–€2,000 | SAS offers more flexibility on governance; SARL is the traditional SME structure |
| Spain | Sociedad Limitada (SL) | €3,006 | €1,500–€3,000 | Requires notary; SL Nueva Empresa allows faster registration |
Tax and liability in practice. In all of these structures, the company pays corporate tax on profits, and you pay personal income tax on what you draw as salary or dividends. The optimal split between salary and dividends depends on your country's tax rules and your personal circumstances — this is exactly the kind of question to put to an accountant before you register, not after. A one-hour consultation will typically pay for itself within the first year.
Startup Costs: What You Actually Need
Most guides on starting a solar company either dramatically understate the capital required or pad the numbers with equipment you don't need on day one. This table reflects what founders actually spend in European markets:
| Category | Low End | High End | Notes |
|---|---|---|---|
| Tools & equipment | €15,000 | €35,000 | Mounting tools, safety equipment (harnesses, ladders, roof hooks), multimeters, crimpers, cable testers, drill sets, power tools |
| Vehicle (van/truck) | €5,000 | €25,000 | Used transit van at low end; new large cargo van at high end. Most founders start with one used van |
| Licensing & insurance | €2,000 | €8,000 | Public liability, professional indemnity, tools insurance, vehicle insurance, trade body memberships (MCS in UK, ZVEH in Germany, etc.) |
| Software | €2,000 | €6,000 | Solar design software, CRM, accounting (Xero/Datev/etc.), project management tools — annual cost |
| Marketing & website | €3,000 | €10,000 | Website, Google Business Profile setup, basic printed materials, Google Ads initial budget if using paid search |
| Working capital | €10,000 | €30,000 | Materials buffer: you buy panels, inverters, and mounting before receiving final payment. 2–3 projects in progress simultaneously requires significant float |
| TOTAL | €37,000 | €114,000 | Most first-year founders land in the €40,000–€60,000 range |
Bootstrapping vs external investment. The majority of solar installation companies are self-funded. The business model supports this: projects are typically 30–50% deposit upfront and balance on completion, which means you're collecting cash before all costs are paid. A founder with €30,000–€40,000 in starting capital can operate a subcontracting model in the first 6 months without significant external funding. External investment (bank loans, government startup grants, private investors) makes sense once you're scaling beyond a one-crew operation and need to buy equipment, vehicles, and hire staff simultaneously.
What you need from day one vs what can wait. Non-negotiable from day one: liability insurance, a van, basic tools, and software for designing systems and generating proposals. A dedicated solar design software tool is worth the investment from the first project — it saves hours per proposal, produces professional outputs that help you close deals, and avoids the errors that come with spreadsheet-based design. What can wait: a second vehicle, hired employees, workshop space, and inventory beyond what's needed for the immediate job in hand.
Key Takeaway
The most common financial error in early-stage solar companies is over-investing in equipment and inventory before having a reliable lead flow. Buy what you need for the next 3 months of work, not what you'll need in 3 years. The business will generate the cash to buy the rest.
Your First 6 Months: Key Milestones
The first six months of a solar installation company are about proving the model, not scaling it. Most companies that fail do so by scaling too early — buying equipment, hiring staff, and running ads before they have a working sales and installation process. The milestone plan below is designed around avoiding that failure mode.
Month 1: Foundation. Register your legal entity. Get your liability and professional indemnity insurance in place — you cannot take on any work without it. Open a dedicated business bank account and set up basic accounting software. Purchase your first set of tools, starting with what you need for the first project type you plan to do (residential rooftop, for most founders). Source a reliable licensed electrician to partner with if you're not one yourself — this is the most critical early partnership. Set up your Google Business Profile and a minimal, functional website with a phone number and a way to request quotes.
Month 2: First subcontracted project. Use your partner electrician's license and MCS/equivalent accreditation to take on your first project as a subcontractor or through a referral from a more established installer. The goal is not profit — it's learning the process end to end: lead, site assessment, proposal, permit, procurement, install, commissioning, handover. Every step will take longer than expected. That's expected. Record what you'd do differently.
Month 3: Your own first project, lead to install. Generate a lead yourself (your network, a referral, a direct inquiry through your website), conduct the site assessment, design the system using your solar design software, produce a proposal, close the deal, and complete the installation. This is the proof of concept. Revenue from this project should at minimum cover your materials cost and the subcontracted labor cost, with something left over for overheads.
Months 4–6: Build a referral pipeline and hit 2 installs per month minimum. Two residential installations per month at average system values of €10,000–€20,000 generates €20,000–€40,000 in revenue per month. At a 30% gross margin, that's €6,000–€12,000 in gross profit — enough to cover most one-person operation overheads and begin repaying startup investment. Focus in these months on: referral systems (asking every completed customer for a referral, formally and immediately after handover), Google Business Profile reviews (ask for these by name), and the quality of your proposal process.
The common failure mode. The companies that struggle in the first year are usually not those that can't install — the technical work is learnable. They're the companies that spent €40,000 on equipment and a van before they had a single lead, ran through their capital in months one and two on overheads, and then ran ads in desperation with no working proposal process to convert the traffic. Leads before capital spending. Always.
Getting Your First Clients
The most effective channels for a new solar installation company's first 10 clients cost almost nothing. This is counterintuitive in an industry where marketing agencies will happily take €3,000/month for Google Ads management, but it's true.
Your existing network. Everyone you know is a potential customer or a potential referral source. This sounds obvious and is systematically underused. Make a list of 50 people — friends, former colleagues, family, neighbors, acquaintances — and tell each of them what you're doing. You're not asking them to buy; you're asking them to refer anyone they hear talking about solar. One person in that list of 50 will likely buy or refer a buyer within the first 3 months.
Trade relationships: HVAC installers, roofers, electricians. These trades are already in your target customers' homes. A homeowner who has just had a new roof installed and asks whether solar would work on it is a warm lead for your business. Call the 10 most active roofers in your area and propose a referral arrangement: you pay them €200–€500 per completed solar installation that comes through their referral. This is one of the highest-ROI marketing spends available to a new solar company.
Google Business Profile. This is the most underused free tool for local solar companies. A well-optimized Google Business Profile with accurate categories ("Solar Energy Company," "Solar Panel Installer"), up-to-date photos, a complete business description with your service area, and a steady stream of reviews will generate organic leads within 3–6 months. Getting your first 10 reviews from completed customers is the priority — ask directly and immediately after every successful handover.
Solar lead aggregators vs self-generated leads. Lead aggregators sell you shared leads: the same homeowner inquiry goes to 3–5 installers simultaneously. Close rates on aggregated leads are typically 5–15% — much lower than self-generated referrals. The economics work only if your follow-up speed and proposal quality are sharper than competitors. Aggregated leads are useful for filling your pipeline in months 2–4 while your self-generated channels are warming up, but they should not be your primary strategy.
What not to do: paid ads before you have a working process. Google Ads and Meta Ads can generate solar leads efficiently — for companies that have a solid proposal process, a fast response time, and can close at a reasonable rate. Launching paid ads before you've tested your proposal-to-close conversion with at least 20 inbound leads wastes budget. Get your process working first with organic and referral channels, then invest in paid traffic to accelerate what already works. Use solar proposal software to make sure every lead you do generate gets a professional, compelling proposal quickly.
Pro Tip
Speed of response is the single most important factor in converting an inbound lead. Research consistently shows that leads contacted within 5 minutes of submitting an inquiry have significantly higher conversion rates than those contacted after an hour. Set up a notification system for web form submissions and respond personally within the hour, even if it's just to schedule a call. This one habit will put you ahead of 80% of solar companies in your market.
Starting Fresh vs Acquiring an Existing Solar Business
An acquisition of an existing solar company is worth considering seriously if you have the capital. It solves several of the hardest problems in starting from scratch: customer relationships, existing reviews and reputation, a licensed and experienced installation crew, and in some cases recurring revenue from O&M contracts.
When acquisition makes sense. You have €100,000+ in available capital. You want to scale faster than organic growth allows. There's an existing business in your target geography with a customer base, at least one experienced installer, and MCS/equivalent accreditation already in place. The owner is retiring or pivoting — the most common reason for solar business sales in a growing market is founder burnout, not business failure.
Valuation multiples. Solar installation businesses typically sell at 2–4x EBITDA (earnings before interest, taxes, depreciation, and amortization). A company generating €80,000 EBITDA per year might sell for €160,000–€320,000. Adjust this for the quality of the customer pipeline, the dependency on the founding owner (a business where all relationships are personal to the seller is worth less), and whether the key staff will stay post-acquisition.
What to examine in due diligence. Pipeline quality: what's in progress vs committed vs potential. Recurring revenue: O&M contracts, monitoring subscriptions, any ongoing service relationships. Team retention: will the installers stay? In a market where qualified installers are scarce, losing the crew in an acquisition erases much of the value. Warranty liability: what's the scope of any open product or workmanship warranties, and are they properly insured.
Build risk vs buy risk. Building from scratch takes longer and costs energy, but you control everything and there are no legacy problems. Acquisition is faster but requires more capital upfront and carries the risk of inheriting problems you didn't know about. If you have the capital and the right target, acquisition is often better. If you don't, building is the only option — and it works, just on a longer timeline.
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The 6 Decisions That Define Your Company
The strategic decisions you make in the first 6–12 months shape your company for years. These aren't operational choices — they're positioning decisions that determine who your customers are, how you compete, and what your team looks like. Make them explicitly rather than by default.
1. Residential only, commercial only, or both? The common mistake is trying to serve both markets from launch. Residential and commercial solar are different businesses: different sales cycles, different proposal requirements, different crew skill sets, different permit processes, different customer relationships. Start focused. Residential is the easier market to enter — smaller jobs, faster cycles, lower capital requirements for materials. Commercial pays more per project but requires stronger financial modeling capabilities and longer sales processes. Choose one, build your process, then expand.
2. Geographic coverage. How wide a radius can you serve effectively from launch? A one-van, one-crew operation can serve a 30–40km radius efficiently. Beyond that, travel time eats into project economics and makes same-day problem-solving impractical. Define your territory explicitly. Being the best solar installer in a 40km circle is a better position than being a mediocre option across a 200km area.
3. Products: which panel and inverter brands to stock. You don't need to offer every brand — you need a reliable, well-priced panel brand and a reliable inverter brand that you know well, can troubleshoot quickly, and can get warranty support from without a fight. Jinko, JA Solar, and LONGi dominate the volume market on panels. Fronius, SMA, SolarEdge, and Enphase are proven inverter choices with strong installer support networks in Europe. Pick two or three combinations and know them deeply. Offering unlimited brand choices adds complexity without adding customer value.
4. Subcontract vs hire: full-time installers vs subcontractors. In years one and two, subcontracting is almost always the right model. You have no payroll fixed costs, you scale capacity to project volume, and you can use licensed installers' accreditations before you hold your own. The downside is lower gross margin and less control over quality and scheduling. As you build consistent volume — typically 6+ installs per month — the economics shift toward hiring. An employed installer at €35,000–€45,000/year generates significantly more margin per project than a subcontractor at day rates, once volume is consistent.
5. Software: invest early or use spreadsheets to start. Invest early. The time spent on manual quoting and proposal creation in the first year — which many founders waste on Excel and Word — is time that should be spent on sales, site visits, and customer relationships. Good solar design software and solar proposal software saves 3–5 hours per project. At 4 projects per month, that's 12–20 hours per month of your most valuable time returned to you. The generation and financial modeling tool lets you show clients accurate ROI projections that meaningfully improve close rates. Check the best solar software guide for a full comparison of what's available.
6. Niche or generalist. Early specialization often wins in solar installation. Agricultural solar (barns, polytunnels, ground-mount for farm buildings) is a strong niche: farmers are sophisticated buyers, the projects are larger than typical residential, competition from national installers is lower, and word-of-mouth among farmers in a region is powerful. Flat-roof commercial is similar. If you come from a specific background — construction, agriculture, hospitality — build your first 20 clients in that sector and own it. Generalist competition in residential solar in most European markets is now intense; niche competition is still thin in most areas.
Key Takeaway
The companies that struggle long-term are usually those that made no explicit decisions on these six dimensions — they just said yes to whatever came in. Focus, process, and clear positioning beat capital and equipment almost every time in early-stage solar installation.
Frequently Asked Questions
How much money do I need to start a solar installation company?
Budget €37,000–€114,000 for a realistic start, depending on market size and ambition. The biggest variables are vehicles, tools, and working capital for materials. Many successful founders started with €20,000–€40,000 by subcontracting labor for the first 6 months and buying equipment progressively as revenue came in. The key is not to over-invest in equipment before you have lead flow — start with what you need for the next 3 months of work.
Do I need an electrician's license to start a solar company?
In most countries, yes — an electrical qualification is required either by you personally or by a licensed electrician you employ or partner with. In the UK, you need MCS accreditation and often a Part P qualified electrician. In Germany, an Elektrofachkraft qualification is required by law. In Italy, you need an abilitazione professionale. In France, RGE (Reconnu Garant de l'Environnement) qualification is required for customers to access tax incentives. The most practical path for non-electricians is to partner with a qualified electrician from day one, then build the business around that technical foundation. Chapter 2 of this hub covers country-by-country licensing in full detail.
Is solar installation a profitable business?
Yes, for companies that manage costs and pricing carefully. Gross margins on residential solar installations run 25–40% on materials and direct labor. Net margins after overheads, marketing, and vehicle costs typically settle at 8–15% for established companies. The companies that fail are usually those that compete on price alone or that underestimate soft costs like permitting, design time, and warranty call-backs. Chapter 3 of this hub covers pricing strategy in detail.
How long does it take to become profitable?
Most solar installation companies reach monthly break-even within 6–12 months if they're generating leads consistently and completing 2+ projects per month. Recovering the full startup investment typically takes 18–36 months. Cash flow is the real challenge in the first year: you pay for materials and labor before you receive final payment, so working capital management matters from day one. The two-stage payment model — 30–50% deposit upfront, balance on completion — helps, but a materials buffer of €10,000–€30,000 is still necessary.
Can I start a solar company without prior solar experience?
Yes, though having electrical or construction experience helps significantly. The most common successful path for non-specialists is to start by partnering with an experienced installer (subcontracting), learn the technical side hands-on, and build the business side — sales, marketing, admin — around that expertise. Rushing to do installations without technical backing is the main path to dangerous work, warranty claims, and regulatory problems. If you come from a commercial or operations background, the better path is to find a strong technical co-founder and run the business side yourself.
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About the Contributors
CEO & Co-Founder · SurgePV
Keyur Rakholiya is CEO & Co-Founder of SurgePV and Founder of Heaven Green Energy Limited, where he has delivered over 1 GW of solar projects across commercial, utility, and rooftop sectors in India. With 10+ years in the solar industry, he has managed 800+ project deliveries, evaluated 20+ solar design platforms firsthand, and led engineering teams of 50+ people.