How solar farms are bought and sold in the UK

A solar farm is a ground-mounted photovoltaic generating asset, and in the UK it is bought and sold as an infrastructure investment rather than as a piece of property in the ordinary sense. When a solar farm changes hands, the buyer is acquiring a long-dated stream of electricity revenue, a grid connection, a land lease and a set of planning consents, all wrapped inside a company or a set of contracts. That makes a solar transaction closer to a corporate acquisition than to a house purchase, and it is why the process, the paperwork and the people involved look so different from a normal property sale.

We broker solar farms, ready to build projects and grid connections between sellers and buyers, and we work off-market, which means most of what we handle never appears on a public listing. This guide explains how solar farms are actually bought and sold in the UK: why so much of the market trades privately, what the process looks like from first appraisal to completion, how an asset sale differs from a share sale, who the buyers are, how long it takes and what a seller should prepare. We are a brokerage, not a lender, an installer or a financial adviser, so our view is that of the party who sits between the two sides and moves the deal along.

Why is most of the UK solar market traded off-market?

An off-market transaction is a sale conducted privately between an identified seller and a small, invited group of buyers, without a public listing or open marketing campaign. A large share of UK solar farms trade this way, and the reasons are structural rather than accidental. Most operating solar farms are held inside a special purpose vehicle, a limited company created to own a single asset, and the people who own those companies are developers, funds and independent power producers who prefer to test the market quietly rather than advertise that an asset is for sale.

Confidentiality is the main driver. A seller putting a solar farm on the open market signals to counterparties, lenders and competitors that it may be under pressure or rebalancing its portfolio, and that signal can weaken its negotiating position. A quiet, targeted process protects commercially sensitive information such as the terms of a power purchase agreement, the strike price under a Contract for Difference, or the covenants attached to project debt. Buyers, for their part, often prefer off-market deals because they face less competition and can do their due diligence without a public auction running in parallel.

The result is a market with thin public listings and a great deal of activity underneath the surface. Public examples do surface from time to time. In 2025, Savills marketed the Wisbridge Solar Farm at a guide of £1.15 million, as reported by Solar Power Portal, which is one of the rare instances of a solar asset being openly advertised with a price. Most sales, though, are matched privately. This is the space we work in: sellers come to us for a confidential route to credible buyers, and buyers register their acquisition mandates with us so that we can approach them directly when something that fits appears.

What are the stages of a solar farm sale from start to finish?

A solar farm sale is a staged process, and each stage exists to reduce the buyer's uncertainty before money changes hands. It begins with appraisal. The seller, usually with an adviser, assembles the core facts about the asset: its capacity in megawatts, its stage of development, the grid connection, the land lease, the revenue contracts and the consents. From this an indicative value is formed, which sets a realistic expectation before any buyer is approached.

The second stage is buyer identification. Rather than advertising, the seller or broker approaches a shortlist of buyers whose mandates fit the asset. Interested parties sign a non-disclosure agreement and receive an information memorandum, then submit indicative offers. The strongest offer, which is not always the highest headline number, is taken forward to heads of terms, a short document that records the agreed price, the structure and the key conditions. Heads of terms are usually not binding on price, but they frame the deal and often grant the buyer a period of exclusivity.

Exclusivity is the point at which the buyer commits real resource. During this period, which typically runs for several weeks, the buyer conducts due diligence, examining the technical, legal, financial and commercial condition of the asset through a data room the seller populates. Detailed legal drafting of the sale and purchase agreement runs alongside. Completion is the final stage: the agreement is signed, the purchase price is paid, and ownership of the asset or the company that holds it transfers to the buyer. In practice the appraisal and preparation stages are where a seller can most influence the outcome, because a well-organised asset moves through diligence faster and with fewer price retractions.

What is the difference between an asset purchase and a share purchase?

There are two ways to buy a solar farm, and the choice between them shapes the whole transaction. An asset purchase is the acquisition of the physical and contractual components of the project themselves: the equipment, the lease, the grid connection agreement and the consents, transferred individually to the buyer. A share purchase is the acquisition of the special purpose vehicle that already owns all of those things, so the buyer takes the company rather than the underlying assets one by one.

The share purchase, often called an SPV share sale, is the more common structure for an operating UK solar farm. Because the special purpose vehicle already holds the lease, the connection and the contracts, buying the company keeps those arrangements intact and avoids the need to novate each agreement to a new owner, which can be slow and can require third party consents. The trade-off is that the buyer inherits the company's entire history, including any past liabilities, tax position and litigation, so the due diligence has to look at the company as well as the asset.

An asset purchase gives the buyer a cleaner starting point because it leaves the seller's corporate history behind, but it usually requires each contract and consent to be transferred separately, which can introduce delay and counterparty consent risk. Which structure suits a given deal depends on the tax position of both sides, the state of the SPV, and the appetite of the buyer for inherited risk. It is one of the first questions we help both parties settle, because it determines the shape of the sale and purchase agreement and much of what the data room needs to contain.

Who buys solar farms in the UK?

The buyer universe for UK solar is narrower than for most property, and knowing who the buyers are is central to running a sale well. At the largest end sit infrastructure funds and institutional investors, including pension funds and dedicated renewable energy funds, which acquire operating solar farms for the long, inflation-linked income they produce. These buyers value certainty and scale, and they are typically most interested in built and generating assets with an established revenue record.

Independent power producers, usually shortened to IPPs, are companies whose business is owning and operating generation. An IPP buys solar farms to grow its portfolio and often has the in-house technical capability to take on assets at an earlier stage, including ready to build projects that still need constructing. Utilities and energy suppliers buy solar both for the generation and to support their own supply obligations. Developers also buy from one another, acquiring projects part-way through development to add to their pipeline.

Each of these buyer types has a distinct mandate: a preferred asset stage, a preferred size range, a geographic focus and a view on how much development or construction risk it will take. A fund seeking stable operating income is a poor match for an early-stage project, and a developer looking for pipeline has little use for a fully built and de-risked asset priced for an institution. Matching the asset to the right buyer mandate is most of the work, and it is the reason buyers register their mandates with us: when an asset that fits appears, we can approach the small number of parties for whom it is genuinely relevant rather than marketing it to the whole market.

How long does it take to sell a solar farm?

The honest answer is that timelines vary with the complexity of the asset and the structure of the deal, but a solar farm sale is measured in months rather than weeks. The preparation and buyer identification stages can be compressed if the seller has its information in order, or drawn out if the data room has to be built from scratch. Once heads of terms are signed and exclusivity begins, due diligence and legal drafting commonly run for a number of weeks, and a more complex asset with project debt, a co-located battery or an unusual lease will take longer.

Several factors move the timeline in particular. A share sale can be quicker to complete than an asset sale because the contracts do not need individual novation, though it requires deeper corporate due diligence. Project debt lengthens the process because the lender's consent and the terms of any refinancing have to be dealt with. Unresolved issues in the underlying documents, such as a lease that needs varying or a grid connection agreement with onerous conditions, are the most common cause of delay, because a buyer will not complete until it understands them.

The single most effective way to shorten a sale is to prepare properly before going to market. When the appraisal is realistic, the data room is complete and the known issues have been identified and addressed in advance, buyers move through diligence with fewer surprises, fewer price retractions and less renegotiation. Much of what we do before introducing a buyer is aimed at exactly this: removing the friction that turns a clean three-month process into a stalled six-month one.

What should a seller prepare before going to market?

A data room is a secure repository of the documents a buyer needs to assess an asset, and assembling a complete one is the most valuable thing a seller can do before a sale. For a solar farm, it should contain the land lease and any variations, the grid connection agreement, the planning consent and conditions, the revenue contracts such as the power purchase agreement or CfD documentation, the construction and equipment records, the operations and maintenance agreement, and, for a share sale, the full corporate records of the special purpose vehicle.

Beyond the documents, a seller should form a clear and realistic view of value before opening discussions, because an unrealistic guide price is the fastest way to lose credible buyers. It also helps to identify the likely deal structure in advance, since the choice between an asset sale and a share sale affects tax and paperwork for both sides, and to resolve any obvious problems in the underlying contracts rather than leaving a buyer to discover them in diligence. A lease with a short remaining term, an unusual grid connection condition or an unclear ownership chain is far better addressed before marketing than during exclusivity.

This is where a broker earns its place in the process. We help sellers appraise the asset honestly, organise the data room so that diligence runs smoothly, identify the deal structure that suits their tax and timing, and approach the specific buyers whose mandates fit the asset, all without advertising the sale to the wider market. A seller who comes to us early gets a confidential route to credible buyers and a process shaped to complete cleanly, rather than a public listing that signals distress and invites tyre-kickers.

Can an individual buy a solar farm, or is it only for institutions?

The question of whether an ordinary investor can buy a solar farm comes up often, and the answer depends on scale and appetite. In principle anyone with the capital and the willingness to take on the responsibilities of ownership can buy a solar generating asset. In practice the buyers of grid-scale solar farms are overwhelmingly companies and funds, because the sums involved, the technical management required and the contractual complexity favour parties with the resources to run an asset over decades.

Smaller ground-mounted schemes and single sites do change hands with individual or small-company buyers, particularly landowners, farming businesses and private investors who understand the sector. The Wisbridge Solar Farm marketed by Savills in 2025 at a guide of £1.15 million is an example of an asset at a scale a private buyer could realistically consider. Even at that end, though, the buyer is taking on a lease, a grid connection, a revenue contract and ongoing operational duties, so the acquisition is a business rather than a passive holding.

There is a separate route for people who want exposure to solar returns without owning an asset directly, through listed renewable energy funds, community share offers and similar collective vehicles. Those are regulated financial arrangements and sit outside what we do. We broker real assets between business counterparties: sellers who want a confidential sale and buyers with a genuine mandate to own and operate. If a private buyer has the capital and the intent to own a real asset, we can work with them on the same basis as any other buyer.

Where do battery storage and co-located schemes fit in a sale?

An increasing share of the assets that change hands are not pure solar farms but co-located schemes, solar generation paired with battery storage behind a shared grid connection. Storage changes the commercial story a buyer is evaluating: the batteries can hold energy generated in the middle of the day and export it when prices are higher, and they can earn separately from balancing and ancillary services. For sellers, a consented battery storage element, or even the realistic option of adding one, widens the buyer pool to include storage specialists alongside solar funds.

Co-location also changes the due diligence. The connection agreement has to accommodate both import and export, the planning consent has to cover the battery compound, and the revenue model blends generation with trading. None of this deters buyers; if anything, the schemes that use their National Grid or distribution connection hardest are the ones acquisition teams compete for, because the connection is the scarce input and storage sweats it. Landowners and developers weighing what their farmland or project could become should treat storage as part of the value conversation, and the benefits usually show up in the offers.