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Selling a direct investment early: how liquid an energy direct investment really is

A direct investment in a battery storage system or a ground-mounted solar plant ties up capital for ten years and more. The question of what happens if you need the money sooner comes up in almost every first call, and usually only at the end. Selling is possible; it takes a buyer, the bank's consent and the right moment. Where that moment lies, and which deadline actually matters, can be answered more precisely than the common rules of thumb suggest.

Jakob HubertJakob HubertPublished 13 August 2026~10 min read

The question comes up in almost every first call, and it usually comes last: what if I need the money before the end? For a direct investment in a battery storage system or a ground-mounted solar plant it is a fair question, because capital is tied up here for many years. An exit is possible, it simply works differently from a sell order in a securities account. What matters is therefore less whether than when, and at what price.

Can I exit an energy direct investment early?

Yes, but not at the push of a button. There is no right of termination that would let you call your capital back, and no trading venue quoting a daily price. An early exit means someone else takes over your position: you sell the asset, or your share of it, to a specific buyer at a negotiated price under its own contract. That is usually feasible, because this is an operating, income-producing real asset and not a niche product without demand. It simply takes longer than a click, and the price is only fixed at the end of the process.

Why can't a direct investment be sold like an ETF?

Because you own a real asset, not a security. An ETF unit is standardised and identical millions of times over, which is why there is always a price for it. A battery storage system at a particular grid connection point, with a particular site agreement and a particular trading history, is a one-off. Every buyer has to examine it before paying for it. That very quality is the reason for the tax leverage and for the earnings structure; the lower liquidity is its flip side. For closed-end funds, specialised secondary-market brokers have emerged over the years through which units change hands, often at substantial discounts. For direct investments no such organised route exists; in exchange, you negotiate over your own asset without an intermediary layer.

Asset classHow quickly availableHow the price is formed
Instant-access savingsimmediatelynominal, no price risk
Fixed-term depositat the end of the termnominal, early access usually only by forgoing interest
ETF portfoliosame trading daycurrent market price
Let residential propertymonthsnegotiation, agent, notary
Energy direct investmentmonthsnegotiation over the income value of the remaining term
Classification by typical availability. No statement about the return or risk of the respective asset class.

When does an early exit become expensive in tax terms?

Above all within one narrowly defined window: until the end of the financial year following acquisition. For that period the subsidised asset must remain in a domestic permanent establishment under §7g(4) EStG and be used there exclusively or almost exclusively, which the tax authorities read as at least 90 %, for business purposes. If the plant is sold or transferred into private assets before then, the investment deduction and the special depreciation must be reversed retroactively: the assessments for the years concerned are amended, the saving falls away, and interest under §233a AO is added to the back payment. How that reversal works in detail and when the interest period starts is set out in Reversing the IAB: what happens if you don't invest, deadlines, interest, ways out.

§7g(6) no. 2 EStG imposes the same usage requirement on the special depreciation, and this is where a misunderstanding persists. Because the special depreciation may be spread over a five-year benefit period, you often read of a minimum holding period of five to seven years. No such period exists. The five-year window only governs how many years the depreciation volume may be spread across; the binding period itself ends with the financial year following acquisition. Anyone selling in year three therefore does not lose the special depreciation already claimed, only the option to claim the remaining balance later. The declining-balance depreciation under §7(2) EStG is not subject to this constraint at all; how the depreciation methods interact is shown in Sonder-AfA §7g (5) vs. declining-balance AfA §7 (2): which combination, when?.

Once the deadline has passed, a second tax consequence remains that applies regardless of timing: the hidden reserves. The investment deduction, special depreciation and declining-balance depreciation push the tax book value down quickly. If the sale price sits above it, the difference is taxable profit. That is not a penalty for exiting early but the reverse side of the high initial write-off, and it hits a sale at the end of the term just the same. One distinction matters here: relief under §16 and §34 EStG applies only to the sale or wind-up of the entire business in one step, not to the sale of individual assets out of a continuing business. The full tax path from the first write-off to the disposal gain is set out in After the IAB: How the ongoing returns and the sale of a direct investment are taxed.

The exit windows at a glance

TimingTax sidePractical side
Until the end of the year after acquisitioninvestment deduction and special depreciation fall away retroactively, plus interestthe most expensive moment, sensible only under real pressure
From the second year after acquisitionno more reversal, unused special depreciation lapsesfinancing still running, prepayment penalty likely
After the fixed-interest period endshidden reserves are realised and taxedno redemption costs, several operating years support the valuation
At the end of the termdisposal gain, potentially relieved under §16 and §34 EStG on a full wind-upthe planned route
Simplified view of a typical path where the financial year matches the calendar year. The actual deadlines depend on the structure and the loan agreement. Not tax advice.

What happens to the financing if I sell early?

If the investment is debt-financed, the bank has a say. The loan is secured on the plant, and a sale does not repay it automatically. Either the buyer takes over the financing, which the bank has to review and approve, or the loan is repaid out of the purchase price. If that repayment falls within the fixed-interest period, the financing partner will as a rule charge a prepayment penalty. Even with a pass-through KfW loan under programme 270, unscheduled repayment is only possible against that penalty; your house bank calculates the amount individually from your interest rate and current market rates. These costs belong in the calculation before you judge an offered sale price to be a good one. How financing is set up and what to watch for in the loan agreement is described in Financing a direct investment: bank loan, KfW 270 and the pitfalls.

How is the price for an operating investment determined?

By the income still to come, not by the price you once paid. A buyer capitalises the expected cash flow over the remaining term and deducts what they price in for costs and risks. The original acquisition price plays no part in this, and neither does the tax book value. Five factors move the price most:

  • Remaining term: how long do the site, grid connection and marketing agreements still run, and how long does any remuneration run?
  • Actual operating data: a plant with several years of solid earnings can be valued more sharply than one resting on forecasts alone, and that usually supports the price.
  • Condition of the hardware: for storage systems the remaining capacity and the residual term of the guarantees count; the connections are set out in The battery as a real asset: lifespan, degradation and warranties of a grid-scale storage system.
  • Quality of the contracts: who bears which costs, how long do maintenance and technical management run, how cleanly are the rights to the site secured?
  • Market environment: interest rates and power-price expectations shift the value of a long-dated cash flow noticeably; where the power market currently stands is set out in Negative electricity prices: what they mean for solar and storage investors.

The most important sentence about price is an uncomfortable one: whoever has to sell quickly sells worse. In this market, time pressure is a price factor like any other, and it only works in one direction. The question of exiting is therefore first a question of your own liquidity planning and only then a question of the market.

Who actually buys a direct investment?

In practice four groups come into question, and they differ markedly in speed and price.

  • The project partner or operator: knows the plant, needs no lengthy review, and in some contracts holds a right of first refusal anyway. Usually the fastest route.
  • Fellow investors in the same project: have already reviewed the documents and often want to increase their position.
  • Portfolio holders and institutional buyers: pay market rates where the data is good, but review thoroughly, and for small volumes their effort often does not pay off.
  • Your own family: strictly speaking not a sale but a transfer. For many investors this is the real fallback, because the income stream stays within the household. This route is specifically favoured by tax law: how inheriting and gifting a direct investment works is shown in Passing on a direct investment: how German inheritance tax favours business assets.

Who actually supports you in a sale is a question to put to the provider, and not a given. A partner who has looked after the plant over the years and documented the operating data cleanly brings more to a sale process than a placement at the outset; what that difference looks like is described in What happens after closing: reporting, asset management and why a partner is not a broker.

Which questions should you ask before subscribing?

The best moment to settle the exit is before the entry. These six questions belong in every review conversation, whoever is offering the project.

  1. Is an early sale provided for contractually at all, and on what conditions?
  2. Whose consent is needed: the bank's, the operator's, that of the other investors?
  3. Are there rights of first refusal or put options, and under which price mechanism do they apply?
  4. Who supports the sale, with what data, and what does that support cost? The answer belongs in the same schedule as every other fee, see Transparent costs: which fees a direct investment involves, and which ones are hidden.
  5. What does the loan agreement say about unscheduled repayment and prepayment penalties?
  6. What happens in the event of death or permanent incapacity, and is transfer to family members regulated?

If these questions go unanswered in writing, that is a finding in itself. Further signals that reveal the quality of a provider are collected in How to tell a trustworthy provider of energy direct investments.

How much capital should be tied up at all?

Only as much as you will not need over the planned term. That sounds banal, but it is the only effective protection against a forced sale at the wrong moment. In practice it means: a reserve for the unforeseen in instant-access savings, medium-term wealth in a securities account, and in the direct investment only the portion that may genuinely work long term. Why a deposit account fills that role well and where its limits lie is set out in Solar or fixed-term deposit? Interest account and real asset in an honest comparison. How much equity is actually required after tax refund and project financing is worked through in How much equity is actually required?; the figure is often lower than investors expect, which also shifts the question of how much is really tied up.

Whether an investment fits your liquidity planning depends less on the individual project than on how your assets are allocated: which portion may work for ten years and longer, and what has to stay available at all times? That is exactly what we go through in a non-binding first call, together with the exit clauses of the specific project documents. What the way in looks like, from first enquiry to closing, is described in From first enquiry to closing: how a direct investment works step by step.


Frequently asked questions

Can I sell an energy direct investment early?

Yes, but not at the push of a button. There is no right of termination and no trading venue with a daily price. An early exit means a specific buyer takes over the plant, or your share of it, at a negotiated price. If the investment is debt-financed, the bank has to approve the transfer or the loan is repaid out of the purchase price.

How long do I have to hold the plant after an investment deduction?

Until the end of the financial year following the year of acquisition. During that period the asset must remain in a domestic permanent establishment under §7g(4) EStG and be used there at least 90 % for business purposes. Anyone acquiring in 2026 whose financial year matches the calendar year is out of that constraint from 2028.

Is it true that there is a minimum holding period of five to seven years?

No, that rule of thumb confuses two things. The special depreciation under §7g(5) EStG may be spread over a five-year benefit period; that is a spreading rule, not a holding period. The actual binding period under §7g(4) and (6) no. 2 EStG ends with the financial year following acquisition. Anyone selling later merely loses depreciation volume not yet used.

What does an early exit cost?

Up to three items can come together. Within the retention period the investment deduction and special depreciation fall away retroactively, with a back payment and interest under §233a AO. If the financing is still within its fixed-interest period, a prepayment penalty is added. And regardless of timing, the hidden reserves are realised and taxed, because the tax book value is low after the high initial write-offs.

How is the sale price determined?

By the capitalised income value of the remaining term, not by the acquisition price and not by the book value. The price is driven by the remaining contract and remuneration term, the actual operating data, the condition of the hardware, the quality of the contracts and the interest-rate and power-price environment. Time pressure on the seller's side lowers the price further.

Is there a secondary market for direct investments?

No organised one. For closed-end funds, specialised secondary-market brokers have emerged through which units change hands, often at substantial discounts. With a direct investment you negotiate directly with a buyer over a real asset instead. Typical buyers are the project partner, fellow investors in the same project and portfolio holders; a transfer within the family is another route.

Sources

  1. §7g EStG: investment deductions and special depreciation (gesetze-im-internet.de, in German)
  2. §233a AO: interest on tax back payments (gesetze-im-internet.de, in German)
  3. §16 EStG: sale of a business (gesetze-im-internet.de, in German)
  4. Federal Fiscal Court, judgment of 28 July 2021, X R 30/19: investment deduction on business wind-up in the following year
  5. KfW: Renewable Energies Standard (270), programme page (in German)

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