Photovoltaic Investment in 2026: Opportunities and Risks
Is Investing in Solar Power Worth It in 2026?
Investors in photovoltaic systems in Germany in 2026 can expect to earn 6–10% per annum on direct commercial investments in solar power plants (Helm Group, 2024 portfolio data). Three factors are crucial for investors: the final year of guaranteed EEG feed-in tariffs before the CfD system transition effective July 17, 2027; the combined tax leverage from IAB, special depreciation, and declining-balance depreciation (Details: Save on Photovoltaic Taxes in 2026), and the time window of the Investment Accelerator Act until December 31, 2027.
In 2026, a photovoltaic investment will be one of the highest-yielding real asset investments in the renewable energy sector in Germany—offering 6–10% per annum, multi-tiered tax benefits, and a regulatory window extending through the end of 2026. This guide is intended for investors, entrepreneurs, capital investors, and project developers who are investing in photovoltaics and are seriously considering investing in new PV systems: featuring primary sources, BFH case law, risk profiles, predictable returns from solar energy, and a comparison with ETFs, real estate, and fixed-term deposits as alternative investment options. Anyone investing in photovoltaic systems in 2026 secures 20 years of fixed remuneration—a project developer with market experience typically guides the process through approval, construction, and commissioning.
By the end of 2025, the German PV market had surpassed the 117 GW mark in installed capacity (Federal Network Agency, January 2026) — meaning that in just one year, photovoltaic systems had overtaken lignite as the second-largest source of electricity. At the same time, three regulatory developments are simultaneously reshaping the investment landscape: the Solar Peak Act (§ 51 / § 51a EEG, Federal Law Gazette 02/25/2025) makes battery storage a strategic decision; the expiring Renewable Energy Act requires an investment decision to be made before 12/31/2026; and the mandatory CfD requirement effective July 17, 2027 fundamentally changes the logic of the revenue model. Investors who invest in 2026 are buying into a comparatively predictable regime before the market switches to two-sided contracts for difference.
How direct investment with Logic Energy works →
If you are considering investing in solar power for the first time, this guide will help you make an informed decision—and if you have already invested in solar power systems, you’ll find the latest updates on Federal Fiscal Court (BFH) case law and the 2026 Solar Peak Act.
Why Invest in Solar Power in 2026—and Why Now?
2026 is the last year with guaranteed EEG feed-in tariffs for new PV systems—a specific window of opportunity for anyone looking to invest in photovoltaics. Starting July 17, 2027, the CfD regime will become mandatory across Europe. Those who go online by December 31, 2026, secure 20 years of legally fixed cash flows with grandfathering rights.
By the end of 2025, Germany had reached approximately 117 GW of installed PV capacity—spread across 5.7 million solar installations (Federal Network Agency, press release, January 2026). Net expansion in 2025 stood at 16.4 GW; for the first time, ground-mounted systems contributed more to the expansion (8.2 GW) than rooftop systems (7.8 GW). The EEG target for 2030 is 215 GW—which would require an average annual expansion of around 19.6 GW. This trend shows: Project developers, owners of large rooftop areas, commercial property operators, and landowners currently have a historic window of opportunity for solar investments. This same momentum explains why more and more companies and operators are investing in PV systems—the combination of guaranteed returns and tax benefits is unique in 2026, and project developers are reporting record order intake for rooftop systems and solar parks.
The Three Key Benefits of Investing in Solar Power in 2026
Photovoltaic systems offer three structural advantages that set them apart from traditional financial products.
First, they provide predictable revenue: The government-guaranteed feed-in tariff under the Renewable Energy Act is valid for 20 years and is legally set at a fixed rate for new installations through 2026—this makes cash flows predictable, regardless of interest rate decisions or market conditions.
Second, revenue is generated from the sale of solar power or from self-consumption—that is, from a tangible product, not from book values.
Third, companies, sole proprietors, and operators benefit from tax advantages under Section 7g of the German Income Tax Act (EStG) that simply do not exist in other asset classes. This combination of stability, tangible value, and tax leverage explains why, by 2026, an increasing number of investors will view photovoltaics as a serious alternative to stocks and real estate.
At the same time, investment costs for turnkey commercial and industrial facilities are at a historic low of ~€1,015/kWp (Fraunhofer ISE, as of July 2024; confirmed by the gruenes.haus price index for March 2026 and the BSW Solar Price Monitor, which reports a similar figure for Q1 2026). The combination of low costs, 20 years of predictable revenue, and tax incentives opens up a return window that will narrow structurally starting in 2027—a rare opportunity to bundle tangible assets, predictable returns, and tax benefits into a single product.
What exactly is changing
Through December 31, 2026: New PV systems and solar installations receive a fixed EEG feed-in tariff for 20 years (7.78 ct/kWh up to 10 kWp, 6.73 ct/kWh from 10–40 kWp, 5.50 ct/kWh up to 100 kWp for partial feed-in — as of February–July 2026, Section 49 EEG 2023, BNetzA determination).
Starting in 2027 (in preparation): A BMWK working draft leaked in late February 2026 (as of January 22, 2026) plans to eliminate the fixed feed-in tariff for new photovoltaic systems under 25 kWp. As of April 2026, the draft is in the legislative process—a cabinet decision is still pending.
Effective July 17, 2027 (EU requirement): CfDs will become mandatory—two-way contracts for difference with a repayment obligation in the event of high spot prices; unilateral feed-in tariff protection will no longer apply.
Effective February 25, 2025: The Solar Peak Act eliminates EEG feed-in tariffs during negative hours for new photovoltaic systems > 100 kWp and, when connected to a smart meter, for systems as small as 2 kWp (Section 51 EEG, Federal Law Gazette, February 25, 2025). The lost remuneration hours are offset against the 20-year subsidy period via § 51a. Operators and owners of larger solar systems should factor this regulation into all planning and profitability calculations—it limits the ability to feed electricity into the grid at full capacity during peak hours.
More on the legislation: What the 2027 CfD requirement means for PV investors · Negative electricity prices and the Solar Peak Act in detail
Now that we’ve covered the market and regulatory landscape, we’ll move on to a direct comparison with traditional asset classes—because the question of whether solar power is a worthwhile investment can only be answered by comparing it to real alternatives.
PV vs. ETF vs. Real Estate vs. Fixed-Term Deposits —
What Is Realistic in 2026
Direct investments in solar power will generate real returns of 6–10% per year in 2026 — money market accounts yield 1.9–2.3%, time deposits up to 2.85%, German government bonds around 3%, and net rental income from real estate 3–5%. Only broadly diversified MSCI World ETFs have historically achieved similar returns—but without tax leverage, without tangible assets, and with significantly higher volatility.
The following table compares the most common asset classes as of March/April 2026—for anyone considering investing in a solar power system who is also exploring other investment options before committing to solar power:
| Asset class | Annual return | Minimum bet | Policy levers | Volatility | Source |
|---|---|---|---|---|---|
| Overnight money | 1.9–2.3% | starting at €1 | none (25% withholding tax) | low | Biallo Index, March 2026 |
| Fixed-term deposit (12 months) | up to 2.85% | starting at €1,000 | none | low | Verivox, March 2026 |
| 10-year U.S. Treasury bond | ~3 % | Starting at €100 | none | low | German Finance Agency, March 2026 |
| Real Estate (Net Rent) | 3–5% | starting at ~€150,000 | Depreciation, Maintenance | medium | empirica / IVD, 2025 |
| MSCI World ETF | ~7–8%nominal (historical) | Starting at €25/month | no special depreciation | high | MSCI Performance 1970–2024 |
| Direct Investment in Solar Power(Commercial) | 6–10% | starting at ~€50,000–100,000 | fully usable | lowFixed for 20 years | Helm Group, Portfolio Data 2024 |
| All figures are gross amounts before personal income tax. Returns are historical or represent market averages—no guarantee of future returns. This is not investment advice. | |||||
Photovoltaics differs structurally from all other asset classes. Solar power is generated regardless of economic conditions or interest rate policy—renewable energy from photovoltaics will have surpassed lignite as the second-largest source of electricity in Germany for the first time in 2025, with 87 TWh of generation and a growth rate of +21% compared to 2024 (Fraunhofer ISE Energy Charts, January 2026). The feed-in tariff is legally fixed for 20 years; no market downturn affects the cash flow of a completed, grid-connected solar plant. Green energy thus becomes a predictable source of income—not a political gamble. The opportunity to invest in renewable energy while simultaneously holding a tangible asset does not exist in this form in any other asset class.
When comparing returns directly, the difference is clear: After capital gains tax (25% KESt + solidarity surcharge) and with inflation at 2.2% (Federal Statistical Office, 01/2026), overnight money yields a real return close to zero—the capital loses purchasing power over the years. Fixed-term deposits yielding up to 2.85% p.a. yield a net return of around 2.1% — before inflation. Real estate delivers a 3–5% net rental yield, but is burdened by high administrative costs, vacancy risk, and the currently strained maintenance market. MSCI World ETFs have historically yielded 7–8% p.a. in nominal terms, but are fully subject to capital gains tax, offer no tangible asset value, and exhibit double-digit volatility during market crashes. A green investment with a predictable cash flow over 20 years is rare among these benchmarks.
Direct investments in solar power have the edge here for three reasons: First, cash flows are guaranteed by the government for 20 years under the EEG. Second, the investment tax credit reduces the net investment amount by up to 21% (assuming a 42% marginal income tax rate), which significantly boosts the return on invested capital. Third, solar systems—comprising modules, inverters, and mounting structures—are registered, physically tangible assets—not a book value in a custodial account, but a photovoltaic system located on a specific piece of land or roof. For investors, companies, and private operators, the combination of tangible assets, guaranteed revenue, and tax benefits is the main reason to invest in photovoltaics rather than traditional financial products. Those who do not wish to invest directly can find more liquid alternatives in solar funds and solar equity funds—with correspondingly lower returns.
Learn more about the asset class comparison and the alternative to overnight money: Solar power as an investment — the complete comparison
Now that the comparison of returns has clarified the position of photovoltaics within the investment spectrum, the next section will address its most important structural advantage—the tax benefits that significantly reduce the net investment.
Leverage in PV Investment — The Mechanical Advantage
In 2026, tax incentives will be one of the three main reasons why a direct investment in solar PV is significantly more profitable than fixed-term deposits, ETFs, or crowd investing. It operates in three coordinated stages: an upfront deduction in the year prior to purchase (investment deduction, Section 7g of the German Income Tax Act), an accelerated special depreciation in the year of commissioning, and a parallel straight-line or declining-balance depreciation over the remaining term. Combined, this significantly reduces the net investment amount and helps finance a substantial portion of the system through the tax deferral.
Which tier applies at what level depends on the size of the system, the legal form, the marginal tax rate, and the self-consumption rate. Recent rulings by the Federal Fiscal Court (BFH) and the Fiscal Courts (FG)—particularly regarding the IAB for residential systems with private self-consumption (BFH III R 39/25, pending)—further tighten the requirements. The detailed article “Saving on Photovoltaic Taxes in 2026: IAB, Special Depreciation, and Declining-Balance Depreciation” covers the complete calculation logic, including maximum limits, time windows, example scenarios for 100 kWp and a €300,000 investment volume, as well as current BFH case law. In any case, the individual calculation should be handled by a tax advisor.
The tax leverage works the same way for every PV investment—but the return on investment varies significantly depending on the type of system. The next section explains which type of system is best suited to which investor profile.
Overview of the Three-Stage Control Lever
The tax incentive operates in three stages: an upfront deduction prior to the investment, accelerated depreciation in the year the asset is put into service, and parallel straight-line or declining-balance depreciation over the asset’s useful life. Taken together, this acts as an equity booster—the government’s tax deferral helps finance a significant portion of the investment.
Which tier applies at what amount depends on the size of the system, its legal structure, and the marginal tax rate. The complete calculation logic, including maximum limits, time frames, and combination rules, can be found in the detailed article “Saving on Photovoltaic Taxes in 2026: IAB, Special Depreciation, and Declining-BalanceDepreciation.”
The IAB is subject to certain conditions
The investment tax credit requires business use and a three-year acquisition period. Recent rulings by the Federal Fiscal Court (BFH) and the Fiscal Courts (FG) have tightened the requirements—particularly for residential PV systems where consumption is predominantly for private use.
The in-depth article “Saving on Photovoltaic Taxes in 2026 → IAB Risks and Federal Fiscal Court Rulings” discusses which scenarios could lead to the IAB being retroactively overturned, when Section 3(72) of the Income Tax Act applies, and exactly which three-year period is in effect. In any case, your individual tax return should be handled by a tax advisor.
The IAB leverage factor applies equally to every PV investment—however, returns vary significantly depending on the type of investment. The next section shows which type of investment is best suited to which investor profile.
Roof-mounted systems, open-space installations, agri-PV — which type of system is right for you?
Those looking to invest in photovoltaics have three options to choose from: rooftop PV on commercial properties yields 6–10% per year through self-consumption; ground-mounted solar farms yield 5–8% per year with lower investment costs; and agri-PV combines agricultural use with an EEG innovation bonus of +0.7 ct/kWh. Which PV system is right for an investor depends on the target size, self-consumption, access to land as an owner, and the tax structure. The current BNetzA maximum rates for 2026 are 10.00 ct/kWh for the 2nd segment (rooftop systems > 1 MWp) and 5.79 ct/kWh for ground-mounted systems in the 1st segment (bid deadline March 1, 2026) — two clearly separate bidding rounds, each with its own maximum value.
Roof-mounted systems (commercial & industrial)
Capital costs in 2026: ~€900–1,600/kWp (turnkey, 0% VAT pursuant to Section 12(3) of the German Value Added Tax Act (UStG) for eligible systems)
Self-consumption rate with battery storage: 60–80%
Self-consumption saves 25–42 cents per kWh compared to a feed-in tariff of about 7.78 cents per kWh—almost five times as much per kWh
Payback period: 5–9 years · Return: 6–10% per year
By 2026, rooftop systems will be the most economically viable option for companies, operators, and owners of large roof areas with consistently high on-site electricity demand—such as manufacturing facilities, logistics centers, data centers, and food cold storage facilities. This gives any company with unused roof space a direct opportunity to generate revenue from its existing infrastructure. The key factor is not the EEG feed-in tariff, but the avoided electricity costs: A company that pays 35 cents/kWh to the utility and produces solar power from its own photovoltaic system for 5–7 cents/kWh saves around 30 cents per kilowatt-hour consumed. Over a 20-year period, this quickly adds up to a seven-figure sum for medium-sized solar systems (300–500 kWp)—making the investment one of the most profitable infrastructure decisions that owners of commercial properties can make. Operators of modern logistics properties with large roof areas will be among the most economically viable candidates for rooftop PV by 2026, and even smaller companies can profitably invest in photovoltaics on their roof space.
→ Learn more about rooftop systems · Three return-on-investment scenarios for businesses with their own PV systems
Ground-mounted solar farms
Investment costs in 2026: starting at ~€700–900/kWp
Levelized cost of electricity (LCOE): 4.1–6.9 ct/kWh (Fraunhofer ISE, July 2024 — 2025/2026 update pending)
Average volume-weighted EEG surcharge rate for December 2025: 5.00 ct/kWh (Federal Network Agency); current maximum rate for the bidding round on March 1, 2026 = 5.79 ct/kWh (1st segment, open space > 1 MWp)
Return: 5–8% per year — with integrated battery storage, the IRR increases by up to 29% (Solarserver, February 2026), which in practice corresponds to a return of approximately 1–2 percentage points
Ground-mounted solar farms—often referred to in the market as solar parks—are the typical direct investment product for investors with €100,000 or more. The advantage over rooftop systems, which are tied to an existing roof area, lies in scalability (MW-scale projects are possible), lower €/kWp costs due to economies of scale, and better orientation for optimizing solar radiation. The downside: no self-consumption — the entire return on such photovoltaic systems depends on feed-in tariffs or the direct sale of solar energy. Well-structured solar parks combine large areas, experienced project developers, experienced operators, and long-term lease agreements to deliver predictable returns. Reputable project developers handle land acquisition, permitting, construction, and often the entire operation over the 20-year term. The 2025 expansion showed for the first time that in Germany, ground-mounted systems have surpassed rooftop systems in terms of net expansion (8.2 GW vs. 7.8 GW)—institutional capital and private investors who invest in solar parks and thus in green infrastructure are moving into this segment together.
→ Learn more about ground-mounted solar systems
Agri-PV
Combines farming with electricity generation
Special provisions for outdoor installations under Section 35 of the German Building Code (BauGB) since Solar Package I
EEG Innovation Bonus: +0.7 cents/kWh on top of the feed-in tariff
Tender volume for 2026: 1,200 MW (EEG 2023)
85% of EU direct payments will be maintained
Agri-PV is aimed at farmers with at least 5 hectares of contiguous land, as well as landowners seeking lease agreements with agri-PV project developers. The economic appeal lies in the dual use of the land: the land continues to generate agricultural income while simultaneously producing solar power, without being considered “converted”—EU direct payments remain largely intact. For investors without their own land, Agri-PV offers the opportunity to invest in photovoltaics as an equity stake in a project developer—not as a standalone direct investment. Another option is co-investment with a farmer who contributes land and is seeking a partner for project financing. The average tender price is approximately 1 ct/kWh higher than that of a traditional ground-mounted system.
Each of these three types of investment has a different return profile—and each comes with its own risks. The next section examines the three most important risks that any sound investment decision should take into account.
What Investors Need to Carefully Consider When Making PV Investments
Anyone looking to invest in solar power plants is purchasing physical fixed assets with a lifespan of 20–40 years. Every investor must be aware of three risks: illiquidity, the structural erosion of the market value of solar power (annual market value in 2025 = 4.51 ct/kWh with 573 hours of negative pricing — Grid Transparency / SMARD), and the partner risk associated with the project developer over two decades, particularly for large solar parks.
Risk 1 — Illiquidity
A PV system is not a tradable security. The German secondary market for photovoltaic projects is underdeveloped—specialized platforms like Milk the Sun do exist, but their depth and liquidity are significantly lower than those of the stock or bond markets. Even through Milk the Sun, selling a PV system typically takes months, not days. Anyone looking to invest in photovoltaics should have a time horizon of at least 10–15 years and not plan to treat the invested capital as a liquid reserve. For many prospective investors, this is the biggest hurdle before they invest in photovoltaics.
Risk 2 — Direct Marketing and the Capture Factor
The annual market price for solar power fell to an average of 4.508 ct/kWh in 2025 (Netztransparenz.de) — with an EPEX baseload price of around 8.93 ct/kWh, this results in a capture factor of only about 50%. Reason: Solar generates power when there is a lot of solar power in the grid (midday peaks), thereby depressing its own market price. The number of negative day-ahead hours rose from 298 (2020) to 573 (2025, a record) — forecasts predict up to 1,000 hours per year by 2030. Source: SMARD — electricity market data from the Federal Network Agency.
The EEG market premium provides protection during the 20-year subsidy period. Once the subsidy expires, plant operators and owners bear the full price risk. Battery storage systems structurally reduce this risk: they charge during periods of negative prices and feed power into the grid during peak-price hours—thus transforming negative-price hours from a revenue risk into an arbitrage opportunity. Anyone investing in photovoltaics today should factor this arbitrage logic into their plans from the very beginning. More: Direct marketing of PV electricity — why the exchange price doesn’t tell the whole story · Negative electricity prices as an investment opportunity
Risk 3 — Partner Risk and VAT Pitfalls in Partial Sales
Direct investments typically last 20–40 years. Anyone considering investing in solar power plants should ask: How sound is the financing? Will the partner handle construction, operation, and maintenance in the long term? Are they personally liable? A sole proprietor (e.K.) has unlimited and personal liability—a fundamental difference from a limited liability company (GmbH), where the risk is limited to the company’s assets. Especially those who invest in photovoltaics as plant owners benefit from this unlimited personal liability on the part of the partner.
A new and highly relevant legal development: In its ruling V R 32/24 of November 13, 2025 (published March 19, 2026), the Federal Fiscal Court clarified that partial sales of solar parks are only exempt from value-added tax as a sale of the business as a whole under Section 1(1a) of the German Value-Added Tax Act (UStG) if the purchaser also assumes responsibility for the grid connection and feed-in activities. If the seller retains the central role as plant operator and continues to receive the EEG feed-in tariff, the partial sale is subject to 19% VAT. For every direct investment structure model in solar parks involving co-ownership or limited partnerships (Sub-KGs), this ruling serves as a trigger for review by owners, operators, and tax advisors—none of the top 10 competitors have addressed it to date.
Important to note: For first-time buyers who purchase their own system from the project developer and hold it until the end of the 20-year term, the ruling is irrelevant. It becomes critical in cases of subsequent partial sales, generational transitions, or restructuring of a plant with multiple parties involved—here, a clear contractual separation of grid connection, plant operation, and EEG claims is mandatory to avoid the 19% VAT trap.
Additional risks
In addition to the three main risks, the following additional factors apply to PV systems and solar power systems—each of these is quantifiable but must be included in the profitability analysis:
You can find more information about costs, funding, and other details here.
| Risk | Order of magnitude | Mitigation | Source |
|---|---|---|---|
| Module degradation | ~0.2–0.5% per year~10–15% over 25 years | Manufacturer's Warranty | Fraunhofer ISE |
| Negative electricity prices (Section 51 of the Renewable Energy Sources Act) | 573 hours in 2025 | Battery storage, credit under Section 51a of the EEG | SMARD / BNetzA |
| Delays in connecting to the grid | project-specific | Actively monitor the IAB deadline (3 years) | § 7g of the Income Tax Act |
| Business Tax on Rental Income | No additional reduction applies | clear organization | § 9(1) of the Trade Tax Act |
| IAB Refund | retroactively + 6% interest per annum | Investment within 3 years | § 7g(2) + § 233a of the German Fiscal Code (AO) |
| Individual risks should be assessed on a case-by-case basis with a tax advisor and investment expert. This is not investment advice. As of April 2026. | |||
With a realistic picture of the risks as a starting point, it is now possible to meaningfully compare which investment structure suits which profile—from crowd investing to direct investments with personal liability.
Photovoltaic Investment —
Model Comparison for Germany in 2026
The German PV investment market offers four investment structures—with a growing range of options, from crowdfunding platforms to solar funds, solar equity funds, and sustainable impact funds, all the way to traditional direct investment. Crowd investing starts at €50 but offers only subordinated loans. Closed-end solar funds starting at €5,000–25,000 are regulated by BaFin, but return potential and transparency vary. Solar ETFs are liquid but volatile and lack tangible assets. Direct investments in your own solar installations—often set up in partnership with an experienced project developer—achieve the highest returns (6–10% p.a.) and fully leverage tax benefits—but require a personally liable partner.
The two basic forms in a sentence
Before the model table goes into detail, it is helpful to distinguish between the two main structures: In a direct investment, the investor becomes the owner of a specific photovoltaic system installed on a particular roof or open space. In a solar fund, a fund manager pools the capital of many investors and invests it in a portfolio of solar farms; the investor holds fund shares, not the system itself.
| Model | Getting Started | Annual return | Structure | Real asset | IAB / Special Depreciation | Source |
|---|---|---|---|---|---|---|
| Crowdfunding: GreenVesting, bettervest, WIWIN | from €50 to €500 | 3–7% | Subordinated loan | no | unavailable | Platforms 2025/2026 |
| Closed-endsolar fund, e.g., Wattner | from €5,000 to €25,000 | 4–7% | Limited partnership, regulated by BaFin | indirectly | limited | BaFin Prospectus 2025 |
| Solar ETFs, e.g., Invesco Solar Energy UCITS | Starting at €25/month | market-dependent and volatile | listed | no | no | ETF KID 2026 |
| PV Direct Investment Logic Energy / mediplan Helm e.K. | starting at ~€50,000–100,000 | 6–10% | own facility, personal liability | yes (physically) | fully usable | Helm Group, Portfolio Data 2024 |
| All figures are gross amounts before personal income tax. Returns are historical or in line with market standards—no guarantee of future returns. The IAB tax leverage (§ 7g EStG) and special depreciation allow for commercial or freelance income. This is not investment advice. | ||||||
Direct investments in one’s own photovoltaic systems differ structurally from all other solar investment models: The investor becomes the beneficial owner, can take full advantage of the IAB and the 40% special depreciation allowance, and benefits from the 0% VAT rate under Section 12(3) of the German VAT Act (UStG). Those who wish to invest in their own PV system receive the full tax benefit and tangible asset value in a single product through a direct investment—as the owner of the system. Those who prefer to invest indirectly in solar energy through solar funds accept lower tax leverage and lower returns but gain liquidity. More: What is a photovoltaic direct investment? The complete guide · A comparison of three return scenarios
Why the lowest price doesn't always yield the best return
Anyone who directly compares different investment options will find a wide range of prices—from affordable low-cost structures (crowd investing starting at €50, open-space-only offers starting at €450/kWp) to turnkey premium solutions. The lower entry price is structurally justifiable but comes at a cost in the form of dependencies: fragmented responsibility across multiple specialized service providers (project developers, contractors, O&M operators, commercial management), lease agreements with third parties spanning 20–30 years, and liability limitations through limited liability company (GmbH) project vehicles, where liability is limited to the company’s assets. If one link in the chain fails or the contracts are not properly coordinated with one another, the investor bears the residual risk.
As a brand of the Helm Group (mediplan Helm e.K.), Logic Energy deliberately positions itself in the premium quality segment. At first glance, quotes may appear slightly higher than low-cost offers when comparing prices alone. However, this is underpinned by the personal liability of the e.K. owners over the entire 20-year term—a fundamental structural difference from pure GmbH project vehicles. Added to this is the one-stop-shop approach: site acquisition, project planning, financing, construction, operation, and maintenance are all handled within the group—no chains of contracts between independent service providers, just a single point of contact throughout the entire term. For investors with a two-decade time horizon, this structural advantage is often worth more than a one-time price advantage at the outset.
FAQ
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For professionally designed photovoltaic systems for commercial and industrial use, the return on investment ranges from 6% to 10% per annum (Helm Group, portfolio data for 2024). Roof-mounted systems with high self-consumption and battery storage achieve the upper end of this range. For investors, ground-mounted solar parks yield 5–8% per annum. These figures are based on historical project data and do not constitute a guarantee of future results.
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The greatest impact on returns comes from the combination of the investment deduction (Section 7g of the German Income Tax Act), accelerated special depreciation in the year of commissioning, and parallel straight-line or declining-balance depreciation over the asset’s useful life. Overall, this acts like a government-funded equity booster and significantly reduces the net investment amount. The exact mechanics, including maximum limits, calculation examples, and current Federal Fiscal Court (BFH) case law, are covered in detail in the article “Saving on Photovoltaic Taxes in 2026.” Consult a tax advisor regarding application in individual cases.
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The EU state aid approval for the EEG expires at the end of 2026. A draft bill from the BMWK (as of January 22, 2026) proposes phasing out the fixed feed-in tariff for new PV systems starting in 2027—as of April 2026, no law has yet been passed. Furthermore, CfDs will become mandatory EU-wide as of July 17, 2027. Investors who invest in photovoltaics in 2026 and commission the solar system by December 31, 2026, will enjoy 20 years of grandfathering.
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Yes—the feed-in tariff isn’t the only driver of returns. With commercial electricity prices ranging from 25 to 42 cents per kWh and electricity production costs of 4 to 7 cents per kWh, self-consumption saves roughly five times as much per kWh. Added to this are revenues from the direct sale of solar power and arbitrage via battery storage. Anyone looking to invest in photovoltaics in 2026 should calculate the return based on three components: feed-in, self-consumption, and storage arbitrage. The annual market value for solar in 2025 was 4.51 ct/kWh (Netztransparenz).
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For more information, click here: How direct investment with Logic Energy works · How much will a PV investment cost in 2026? · Save on taxes with photovoltaics in 2026
This page is intended solely for general informational purposes and does not constitute investment, tax, or legal advice. The returns cited are based on historical project data from the Helm Group (portfolio data for 2024) and are not a guarantee of future results. Feed-in tariff rates, maximum bid limits, tax regulations, and regulatory frameworks are subject to change—particularly due to the upcoming CfD regime effective July 17, 2027, and ongoing legislative proceedings regarding the EEG post-2026. Information regarding draft legislation (e.g., the BMWK working draft on the EEG successor regime) reflects the current state of planning and does not constitute enacted law. Ongoing Federal Fiscal Court (BFH) proceedings (BFH III R 39/25) may further develop the legal situation regarding the investment deduction for self-consumption systems. Direct investments in photovoltaics are illiquid fixed assets with a long lock-in period and may involve risks of loss. For your individual situation, please consult a licensed investment advisor and/or tax advisor. All information is provided without warranty. As of April 2026.
Sources
Federal Fiscal Court — Judgment V R 32/24 of November 13, 2025 — No sale of the entire business in the case of a partial sale of a solar park if the seller retains the grid connection and EEG feed-in rights (published March 19, 2026)
Hesse Finance Court — Judgment 10 K 162/24 of October 22, 2025 — IAB denied for residential PV systems with self-consumption exceeding 10%; appeal pending before the Federal Fiscal Court under case no. III R 39/25
§ 7g EStG — Investment Allowance and Special Depreciation (gesetze-im-internet.de) — Legal basis for the investment allowance up to €200,000 and 40% special depreciation (as amended by the Growth Opportunities Act 2024)
Federal Ministry for Economic Affairs and Climate Action (BMWK) — Working draft on the successor regime to the Renewable Energy Act (EEG) and mandatory Contracts for Difference (CfDs) effective July 17, 2027 (as of January 22, 2026; no cabinet decision has been made yet)
Federal Network Agency (BNetzA) — installed PV capacity (117 GW by the end of 2025), monthly net expansion (16.4 GW in 2025), tender results, feed-in tariff rates, maximum rates for 2026 (rooftop 10.00 ct/kWh, ground-mounted 5.79 ct/kWh as of March 1, 2026)
Fraunhofer ISE Energy Charts — Solar Generation in Germany (87 TWh in 2025, +21% YoY), Electricity Generation Mix, Market Data
Fraunhofer ISE — Study on "Levelized Cost of Electricity for Renewable Energies" — LCOE ranges for ground-mounted systems (4.1–6.9 ct/kWh) and investment costs (~€1,015/kWp, as of July 2024)
BSW Solar — Photovoltaic Price Monitor — a quarterly price index for turnkey PV installations and modules (German Solar Industry Association)
gruenes.haus — Photovoltaic Price Trends March 2026 — Price index updated monthly, confirming an average price of €1,015/kWp for turnkey rooftop systems
Netztransparenz.de — Annual Solar Market Price 2025 (4.508 ct/kWh), Monthly Market Prices, EEG Feed-in Tariff Transparency
SMARD — Electricity market data from the Federal Network Agency — negative day-ahead price hours (573 hours in 2025), spot market time series, EPEX data
Federal Statistical Office (Destatis) — Inflation in Germany (2.2%, Jan. 2026), Consumer Price Index
Biallo — Money Market Index — Money Market Rates (1.9–2.3% p.a., March 2026)
Verivox — Fixed-Term Deposit Comparison — 12-Month Fixed-Term Deposit Rates (up to 2.85% p.a., 03/2026)
German Federal Finance Agency — Federal Bond Yields (10-year ~3%, 03/2026)
PwC Germany — Analysis of BFH V R 32/24 — Legal Assessment of the Federal Fiscal Court’s Ruling on Partial Sales of Solar Parks
Haufe — IAB on Residential Photovoltaics — Expert Commentary on the Hessian Fiscal Court Ruling and BFH III R 39/25