How to Sell a Renewable Energy Installation Business — Conclave Partners

Owners of solar, heat pump and EV charging installation companies usually come to market after a strong year. That is understandable, and it is also the hardest possible moment to be understood, because the first thing an experienced buyer does with a strong year in this sector is ask what caused it.

If the answer is a grant scheme, a VAT change or an energy price spike, the buyer will not pay a multiple on it. If the answer is accreditation, an order book, a service base and a team that can install faster than the competition, they will. The gap between those two readings of the same profit and loss account is frequently the difference between a deal and a wasted year.

This article covers what buyers actually price in an installation business, why accreditation and warranty liability sit at the centre of diligence, and what an owner should fix in the twelve months before going to market.

Installation demand in this sector is created by policy, and policy moves in steps rather than curves. Buyers know this and model accordingly.

The numbers are unusually clear. The EU installed 65.1 GW of new solar in 2025, a contraction of roughly 0.7 per cent against 2024 and the first annual decline since 2016, even as the bloc passed its 400 GW target with a fleet of around 406 GW. The pain was concentrated exactly where most installation companies live: residential rooftop fell from 28 per cent of newly installed EU capacity in 2023 to 14 per cent in 2025, as crisis-era support schemes wound down in markets including Austria, Belgium, Czechia, Hungary, Italy and the Netherlands.

Heat pumps tell the same story in a different rhythm. European sales fell around 5 per cent in 2023 and about 21 per cent in 2024, then recovered by roughly 10 to 13 per cent in 2025 depending on the country set, with the trade association attributing the turnaround directly to government action. An installer whose accounts stop at 2024 looks like a failing business. The same installer measured across 2022 to 2025 looks like a normal business in a policy-driven market.

The practical consequence is that a buyer will normalise your earnings across the cycle rather than accept the peak. Your job is not to argue against that. Your job is to make the normalisation land in the right place by showing which parts of your revenue are policy-dependent and which are not, in the same set of accounts, over at least three years. Sellers who present one number and defend it lose the argument. Sellers who present the split and explain both halves usually get credit for the durable half. In the experience of Conclave Partners, producing that split before the first meeting changes the conversation from whether the earnings are real to what the repeatable portion is worth.

This is the issue that most often turns a straightforward sale into a complicated one, and most owners underestimate it.

In nearly every European market, installing grant-eligible or grid-connected renewable equipment requires scheme accreditation, and that accreditation is typically underpinned by a named, qualified individual within the business. If that individual is the owner, the seller, or a single employee approaching retirement, the buyer is looking at a company whose right to trade walks out of the door with one person.

Buyers examine this in detail. They will ask which schemes you hold, what each one permits, who is named on it, whether the qualification is personal or corporate, what happens to the accreditation on a change of control, and how long a reassessment takes. They will also ask about the electrical and gas competencies underneath the renewable schemes, because those are usually personal certifications with their own renewal cycles.

Three points matter commercially. First, a share sale generally preserves accreditation that sits with the operating company, while an asset sale frequently does not — which alone can decide the deal structure. Second, where the accreditation depends on a named individual, the buyer will want that person locked in, and the retention package for them comes out of the economics of the transaction. Third, depth is worth money: a business with four qualified assessors rather than one is not merely safer, it is a different risk category, and it prices differently.

The fix is available to any owner willing to spend on it a year ahead. Put a second and third person through the qualification. Document who holds what and when it renews. Get the scheme's written position on change of control. None of this is expensive relative to what it protects.

Installers sell an installation and, along with it, a promise that lasts far longer than the job. Panels carry performance warranties measured in decades; workmanship warranties commonly run five to ten years; insurance-backed guarantee schemes add another layer; and in many markets the installer, not the manufacturer, is the customer's first point of claim.

That tail does not disappear at completion. In a share sale it stays inside the company the buyer is acquiring, which means the buyer is pricing your past workmanship, not just your future revenue.

So they will look at your callback rate, your rectification costs as a percentage of revenue, your open complaints, any disputes with an accreditation or ombudsman scheme, and how many jobs you have had to revisit. They will look at which manufacturers you fitted and whether any of them have failed or exited, because a failed manufacturer converts a product warranty into your workmanship problem. And they will look at whether you were insured continuously, with what limits, and whether the policy responds on a claims-made or occurrence basis — a distinction that decides who pays for a defect discovered three years after closing.

Sellers who track rectification cost as a line item, and can show it falling, are in a strong position: it converts an unknown liability into a measured one. Sellers who have never separated it from general labour cost invite the buyer to assume the worst and hold back cash accordingly.

Installation revenue is project revenue. It is real, it can be large, and it is worth less per euro than a service contract, because it has to be won again every year.

What buyers pay up for is the annuity attached to the installed base: operation and maintenance contracts, monitoring and performance guarantees, servicing agreements on heat pumps, charge point management and network contracts, extended warranty products sold to your own customers, and any share of energy or software revenue that continues after the equipment is commissioned.

Two things make this worth building deliberately. It is high margin, because the customer is already yours and the acquisition cost was paid on the original job. And it is the natural defence against a bad policy year, because service revenue does not care whether a grant scheme is open.

Present it as data: number of sites under contract, annual value, churn, contract length, notice periods, price escalation, renewal rate, and how the contracted base has grown over three years. An installer who converts a meaningful share of completed installations into a service relationship is not valued like a contractor. An installer who has never asked customers for a service contract is leaving the most valuable part of the business unbuilt.

Buyers separate residential, commercial and utility-scale work because each behaves differently. Residential is high volume, marketing-led, subsidy-sensitive and cash-collected quickly. Commercial and industrial rooftop is lumpier, relationship-led, less exposed to consumer grants and often accompanied by longer service tails. Ground-mount and utility work is a different business entirely, with different working capital and different competition.

Show the mix, the margin by segment and the direction of travel. A business shifting from residential towards commercial during a residential downturn is telling a story about management quality, not just about revenue.

The order book gets forensic attention. Buyers want signed contracts separated from quotes, deposits taken, scheduled installation dates, expected margin per job, and the age of the pipeline. A quote that has sat for four months is not pipeline; it is history.

Grid connection deserves its own line. Where jobs depend on distribution network approval, the queue is outside your control and its length varies enormously by country and by network operator. A large order book with a long connection queue behind it is a genuinely different asset from the same order book with approvals already granted. Buyers will find out; showing them first is worth more than letting them discover it.

Installation businesses run on stage payments, deposits and inventory, and all three become negotiation points.

Deposits are customer money for work not yet done. They sit on the balance sheet and reduce the cash a buyer will credit you for. Expect the working capital mechanism to account for them explicitly.

Inventory carries a risk specific to this sector: equipment prices have fallen sharply, and stock bought in a tight market can be worth materially less than its book value. Buyers will mark it to today's price. Sellers holding heavy stock of superseded inverters or modules should deal with that before diligence rather than argue about it during.

Retention is normal in commercial work. Show retentions held, their age, and your historical recovery rate, because a buyer who cannot see recovery history will assume a proportion is uncollectable.

Finally, normalise the accounts honestly, including a market salary for the owner's own work and the true cost of vehicles, tools and van stock. Adjustments a buyer can verify survive; adjustments resting only on the owner's word push them to discount the entire earnings figure.

Energy services groups and utilities buy installers to own the customer relationship and the installed base, and they pay for scale, accreditation depth and service contracts rather than for one good year.

Mechanical and electrical consolidators buy for capability and crews, particularly where they already hold the commercial customer and want to stop subcontracting the renewable element.

Private equity has been active building regional platforms, typically buying one business as a base and adding others; these buyers pay well for management that will stay and for systems that can absorb bolt-ons.

Distributors and manufacturers occasionally integrate forward to secure installation capacity in a market where trained crews are the constraint.

Local and regional competitors buy for territory, qualified staff and the service base, and can move fastest because they need the least explanation.

Which of these values a specific business highest depends on where its value actually sits — in accreditation, in crews, in the order book or in the service base — and establishing that before anyone is approached is where Conclave Partners starts a mandate in this sector.

Expect earn-outs to be proposed, and expect them to be justified by the policy cycle rather than by doubts about you. Where a buyer cannot be certain which part of recent revenue repeats, they will offer to pay for it if it does. That is a reasonable position, but the metric matters enormously: an earn-out on contracted service revenue is achievable, while one on total revenue in a year when a grant scheme closes is a lottery.

Expect warranty and indemnity protection focused on past installations, and expect a retention or escrow sized against your rectification history rather than an arbitrary percentage.

Expect key-person conditions covering whoever holds the accreditation, with a defined term, and expect them to be a condition of completion rather than a nice-to-have.

And expect the deal structure question — shares or assets — to be settled by accreditation rather than by tax preference. Advice on both should be taken before the process opens, because the answer changes the buyer list.

Map every accreditation and certification: what it permits, who is named, when it renews, and the scheme's written position on change of control.

Qualify a second and third person for anything currently resting on one individual.

Separate rectification and callback cost into its own line and track it monthly, so the warranty tail becomes a number rather than a fear.

Confirm continuous insurance cover, check whether it is claims-made or occurrence, and keep the historical certificates.

Build the service base deliberately: offer maintenance and monitoring contracts on completed installations, and record contracted annual value, churn and renewal rate.

Split the accounts by segment and by policy exposure, and present three years so a buyer can normalise the cycle without guessing.

Clean up the order book: signed contracts, deposits, scheduled dates, expected margin, connection status.

Write down or clear obsolete stock rather than carrying it into diligence at cost.

Reduce owner dependence in sales. If every commercial customer was won personally by the seller, the buyer is acquiring a person, and prices it that way. Sellers who ask Conclave Partners where to start are usually pointed at the accreditation map and the service contract base, because those two items decide who can buy the business and how much of the price survives to completion.

A prepared installation business typically takes six to nine months from launch to completion — shorter than a permitted waste or infrastructure asset, longer than a simple services business, with accreditation checks and insurance history the usual causes of delay.

Diligence runs in parallel streams: financial, commercial, technical and health-and-safety. The safety file matters more here than in most sectors, because work at height and electrical work carry incident histories that buyers read closely, and an unresolved enforcement matter narrows the buyer list before price is ever discussed.

Confidentiality is manageable but requires care, because installer markets are tight and crews talk. Site visits can usually be framed as insurance or quality inspections, and customer contact should be deferred until late, under a clear protocol.

Timing the approach to the market matters more in this sector than in most, because the policy calendar is public. Coming to market immediately after a subsidy withdrawal invites buyers to price the trough; coming to market with a service base built and a diversified segment mix lets you sell the business rather than the cycle. That timing judgement is one of the few decisions here capable of moving value by more than a turn of EBITDA, which is why Conclave Partners takes it at the start of a mandate rather than in the middle of a process.

It depends on the scheme and the deal structure. Accreditation held by the operating company usually survives a share sale, while an asset sale often requires the buyer to be assessed in their own right. Where the scheme relies on a named qualified individual, the accreditation effectively depends on that person staying. Get the scheme's written position on change of control before you start, because it can determine whether you sell shares or assets.

They normalise it. A buyer will look across the policy cycle rather than pay a multiple on a year created by a grant, a VAT change or an energy price spike. The way to protect value is to show which revenue is policy-dependent and which is contracted or repeat, across at least three years, so the normalisation lands on evidence rather than on assumption.

In a share sale the liability generally stays with the company and therefore passes to the buyer, which is why they price your past workmanship. Expect warranties, an escrow or retention, and close attention to your rectification cost history and insurance continuity. Tracking callback cost as a separate line converts that open-ended worry into a measurable figure.

Substantially. Installation work is project revenue that must be re-won; maintenance, monitoring and management contracts are an annuity attached to an installed base you already own. Buyers apply a materially higher multiple to the contracted portion, and it is also the part of the business that holds up when a subsidy scheme closes.

Frequently, yes, because the policy cycle makes future revenue genuinely uncertain. The negotiation worth having is not whether to accept one but what it is measured on: contracted service revenue and gross profit are fair and achievable metrics, whereas total revenue in a year when a support scheme changes is largely outside your control.

For a prepared business, roughly six to nine months from launch to completion, with accreditation verification, insurance history and safety records the usual sources of delay. The preparation that determines the price — accreditation depth, the service base, segment split and a clean order book — needs about twelve months before that.

Ildar Zakirov — Conclave Partners ildar@conclavepartners.com

Sergi Kosiakof — Conclave Partners sergi@conclavepartners.com