Buying a solar park: what a fair price is – and why the truth is rarely in the kWp
Why the price per kWp rarely tells the whole story and what investors should look at when buying their first solar park, to judge a project realistically.
Fabian BökeAnyone looking to invest in a solar park for the first time instinctively looks for a number. A price per kWp. A formula to hold on to. Understandable – especially in the energy market, where the price ranges between providers look confusingly wide. Yet this is exactly where the misunderstanding begins: the purchase price of a solar park is not a product you can compare like a car or a set of modules.
A solar park is always a project – and every project tells its own story.
It starts with the land. An identical solar park costs something different in Bavaria than in Mecklenburg-Western Pomerania, even with the same components. Not because someone wants to earn more, but because land prices, setback rules, soil classes, species protection requirements, access and grid connection differ enormously. A solar park is so closely tied to its site that every region develops its own price structure.
From the outside you often see none of this. The exposé shows a number: 950 €/kWp. Or 1,180 €/kWp. Or 1,350 €/kWp. And it is exactly this range that frustrates many first-time investors – entirely without reason. Because it is logical.
The price is a snapshot – but the project is a process
What a solar park actually costs depends above all on the phase in which you buy it. If you buy an RTB project, a fully permitted scheme, you are in truth paying for a combination of time, risk and reduced opportunity.
The developer has invested months or years: in planning law, nature conservation, grid enquiries, surveying, leases, engineering, negotiations with the grid operator.
The investor saves that risk – and pays for it. That is neither good nor bad, just the reality of the market.
Turnkey systems are a different story. Here not only the permitting is done, but the EPC side as well: construction, installation, components, grid connection, handover. Whoever buys a turnkey system is essentially buying a ready-made cash flow. The risk drops considerably – and the price rises accordingly.
The rules are simple: The further a project is developed, the less risk – and the higher the price.
Why the price per kWp is not really a price but an indicator
Many investors use €/kWp like a magic figure. But this number says almost nothing when looked at in isolation.
A ground-mounted system at 980 €/kWp can be a poor deal if the lease is excessive or the grid connection point is five kilometres away.
A system at 1,250 €/kWp, on the other hand, can be excellent if:
- the site is secured long-term,
- the yields are solid,
- the lease is fair,
- the grid connection is favourable,
- and the construction phase was planned properly.
The truth is: A cheap solar park can become expensive. An expensive solar park can be cheap.
The silent factor almost nobody sees: the lease
In the long run, the lease decides more about the return than a few euros of difference in the purchase price. If a solar park produces 20,000–40,000 € of lease costs every year, then a miscalculation of just 10 % over a 20-year term is a six-figure sum.
Many projects look attractive at first glance, but the catch is in the lease formula: Sometimes it is indexed, sometimes not. Sometimes it is paid per kWp, sometimes per hectare. Sometimes there is a one-off payment that worsens the IRR even though the price looks good.
An experienced investor therefore looks at the lease first – and only then at the purchase price. Many do not. And that is exactly where the most expensive mistakes in the market happen.
Ancillary costs: the blind spot of many investors
Another point that appears only in passing in classic project exposés is the ancillary costs. But they decide whether the return is realistic or merely theoretical.
Among them are:
- legal reviews,
- grid connection costs (often much higher than expected),
- expert reports,
- construction supervision,
- insurance from day one,
- financing costs during construction.
Many project developers do not list these items in full – not out of ill intent, but because every due diligence is structured differently. An investor, however, must factor these costs in, so as not to end up 5–12 % above the expected capital requirement.
A realistic example: 10 MWp ground-mounted
Looking at the market soberly, a fair price in Germany is currently roughly:
- Turnkey: 650–800 €/kWp
- RTB project rights: 40–60 €/kWp
Anything below sounds tempting but is rarely realistic. Anything above can make sense if the quality is right.
A 10 MWp park built turnkey for 6.5 million € can be a thoroughly solid investment – if the lease is not excessive and the grid connection has been properly settled. A 10 MWp park for 8 million € can be an excellent investment if the yields are high, the site is secure and the build quality is above average.
The real conclusion: a solar park is not a product but an overall concept
Anyone who wants to buy a solar park has to learn to read the price not "per kWp" but in the context of the whole structure:
- site
- permit
- component technology
- lease design
- grid connection
- EPC quality
- ancillary costs
- operating concept
- yield forecasts
Only when all building blocks fit together does a fair overall price emerge — and a sustainable investment.
A solar park is no bargain market. It is an infrastructure project. And as with every infrastructure project, the value depends not on the label but on the substance.
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