The Logic Energy Investor Model

Investors purchase their own photovoltaic system; Logic Energy builds and operates it—the revenue from electricity sales goes to the investor after operating costs are deducted. No fund, no contracting: true ownership with personal liability on the part of mediplan Helm e.K.

The short answer

The Logic Energy investor model works like this: You purchase your own photovoltaic system; Logic Energy plans, builds, and operates it; and after operating costs are deducted, all electricity revenue goes entirely to you. No fund, no certificate, no contracting—genuine ownership with personal liability on the part of mediplan Helm e.K. The minimum investment is approximately €100,000 in equity, with a base term of 20 years and the option to extend up to 40 years.

The Logic Energy investor model is designed for investors who want to invest their capital in a tangible asset rather than in a purely interest-bearing product. Logic Energy is the photovoltaic brand of Logic Glas GmbH and implements the photovoltaic projects in which investors participate. Investors acquire ownership of a specific solar power plant, while Logic Energy, as the project partner, handles all operations—from planning and construction to grid connection and ongoing maintenance. The overview of photovoltaics as an investment shows how photovoltaics fits into the investment landscape.

Table of Contents

1. The Investor Model in a Nutshell
2. Two distinct models: the corporate model and the investor model
3. In Four Steps: Here's How the Investment Works
4. Where the revenue comes from: the three sources of revenue
5. Tax Leverage: IAB, Special Depreciation, and Declining-Balance Depreciation
6. Ownership and Liability: What the Model Covers
7. A Comparison of Investment Models
8. Who This Model Is Suited For—and Who It Isn't
9. Outlook: What the 2027 EEG Reform Means
10. Frequently Asked Questions
11. References

The Investor Model in a Nutshell

In short: Under the Logic Energy investor model, the investor purchases a photovoltaic system as physical property and receives all electricity revenues after operating costs. Logic Energy builds and operates the system; the contractual partner is mediplan Helm e.K., with personal liability on the part of the owners. The basic term is 20 years, with the option to extend up to 40 years.

Logic Energy's investment model is a direct investment in solar power systems, in which investors acquire ownership of a specific solar power system or a defined component. Key facts at a glance:

• Minimum investment: 100,000 € or more in equity capital
• Term: 20-year base term, extendable to 40 years
• Return: historically 6–10% per year before taxes, with tax leverage of up to 10–12% (Helm Group, portfolio data for 2024)
• Tax Planning: Investment Deduction and Special Depreciation Under Section 7g of the German Income Tax Act (EStG)
• Contractual Partner: Direct contractual relationship with mediplan Helm e.K., with personal liability of the owner
• Sustainability: Real-asset investment guided by ESG criteria that contributes to the energy transition

The difference from most offerings on the market lies in the form of the investment. Here, an investor does not become a creditor of a project company or a shareholder in a fund, but rather the owner of a real, operational facility—or a clearly defined component of that facility. Without an intermediate fund layer, the returns flow directly to the investor, which keeps the structure transparent. The returns are generated by the actual operation of the photovoltaic system, not by a distribution formula. The article on photovoltaic investment via the inverter explains in detail how ownership is technically assigned to a single component.

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Logic Energy provides a free, no-obligation assessment of your individual return potential—including financing structure and tax optimization—with a personal point of contact rather than an anonymous fund structure.

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Two distinct models: the corporate model and the investor model

In short: Logic Energy serves two distinct target groups. In the corporate model (contracting), Logic Energy invests, builds, and operates the facility itself—the business receives low-cost electricity, and Logic Energy retains the returns. In the investor model, the investor purchases the facility and receives the electricity revenue; Logic Energy merely builds and operates it.

This distinction is the source of the most common misunderstanding. When people hear that Logic Energy builds and operates power plants, they often assume that the proceeds always remain with the company. This applies exclusively to the corporate model. In the investor model, the roles are reversed: the capital, ownership, and returns belong to the investor, while operational responsibility lies with Logic Energy.

For businesses considering installing their own system for self-consumption, the calculation is different—in such cases, the avoided electricity purchase costs carry more weight than the feed-in tariff. This scenario is covered in the overview of photovoltaics as a capital investment and a direct investment.

In Four Steps: Here's How the Investment Works

In short: The process consists of four stages. First, the investor purchases the plant for approximately €100,000. Second, Logic Energy plans, builds, and operates it, assuming personal liability as the owner. Third, the plant generates electricity daily. Fourth, the proceeds, after operating costs, are paid to the investor.

1. An investor purchases the system. The investor acquires a solar power system—with the option of battery storage—starting at approximately €100,000 in equity. This involves physical ownership of a specific system, not a certificate or a fund share.
2. Logic Energy builds and operates the facilities. Planning, permitting, construction, grid connection, and ongoing operations are handled by Logic Energy. The contracting party is mediplan Helm e.K., whose owner bears personal and unlimited liability.
3. The plant generates electricity. Revenue is generated through the EEG feed-in tariff, direct sales on the spot market, or a long-term power purchase agreement (PPA)—depending on the plant’s size and location.
4. The investor receives the proceeds. The revenue from electricity sales is paid to the investor after deducting the agreed-upon operating costs. Historically, the return has ranged between 6 and 10 percent per year before taxes over a term of 20 to 40 years (Helm Group, portfolio data for 2024).

From site analysis and project planning to operation, everything comes from a single source: The engineers and experts on the Logic Energy team plan, build, and operate the system—whether it’s a rooftop or ground-mounted installation, although ground-mounted installations are subject to longer permitting processes. The Helm Group brings decades of experience to the table as a project partner.

Where the revenue comes from: the three sources of revenue

In short: Revenue comes from three possible sources. Small rooftop systems receive the fixed EEG feed-in tariff. Larger systems sell their electricity directly on the spot market at the market price for solar power. And a Power Purchase Agreement (PPA) guarantees a fixed long-term purchase price that is not subject to market fluctuations.

Photovoltaics convert sunlight directly into solar electricity via PV modules—solar energy, as a renewable energy source, thus forms the basis for the system's output.

1. EEG Feed-in Tariff. For partial feed-in up to 10 kWp, the statutory feed-in tariff is 7.70 ct/kWh (effective as of August 1, 2026; until July 31, 2026, the rate was 7.78 ct/kWh). The rate is guaranteed for 20 years plus the year of commissioning. The Federal Network Agency adjusts the rates every six months; a complete overview is provided in the 2026 EEG Feed-in Tariff Guide.
2. Direct sales on the spot market. Systems with a capacity of 100 kW or more are required to sell directly; revenue is calculated as the market value of solar plus the market premium. The average annual market value of solar in 2025 was 4.51 ct/kWh, with monthly values ranging from around 1.8 ct (June) to 11.5 ct (January). A battery storage system can shift electricity from periods of negative prices to more expensive evening hours, stabilizing the yield profile and generating additional revenue from arbitrage and system services. The analysis of direct marketing of PV electricity illustrates how this works.
3. Power Purchase Agreement (PPA). A PPA is a long-term direct supply contract between a generator and a consumer, independent of market fluctuations. Solar PPA prices in Europe stood at around 55 €/MWh in the first quarter of 2026 (LevelTen European PPA Index). PPAs provide planning certainty for both parties and are particularly relevant for commercial customers with high daily consumption—typically starting at around 500 kWp.

Since the Solar Peak Act of February 25, 2025, new systems do not receive EEG feed-in tariffs during quarter-hour periods with negative market prices (Section 51 EEG); this shortfall is partially offset by an extension of the feed-in period (Section 51a EEG). Further details can be found in the guide on negative electricity prices and photovoltaics.

Tax Leverage: IAB, Special Depreciation, and Declining-Balance Depreciation

In short: A commercial direct investment in solar power can combine three tax instruments: the investment deduction (up to 50%, § 7g EStG), the special depreciation allowance (40%, § 7g(5) EStG), and declining-balance depreciation (up to three times the straight-line depreciation, capped at 30%, § 7(2) EStG—15% per year for rooftop PV). Together, they shift a significant portion of the tax deductions to the early years.

The Three Depreciation Methods

A commercial PV direct investment can combine three tax instruments:

• Investment Deduction (IAB): up to 50% of the planned acquisition costs, with a maximum of €200,000 per business; deductible as a reduction of taxable income as early as three years before the purchase (Section 7g of the Income Tax Act (EStG)).
• Special depreciation: As of January 1, 2024, 40% of the tax base, which may be freely allocated among the year of acquisition and the four subsequent years (Section 7g(5) of the Income Tax Act).
• Declining-balance depreciation: up to three times the straight-line depreciation, capped at 30% per year, for movable assets acquired between June 30, 2025, and January 1, 2028 (Section 7(2) of the Income Tax Act (EStG), 2025 Immediate Tax Investment Program). For photovoltaic systems, the three-fold rate applies, not the cap: With a straight-line depreciation rate of 5% (20-year useful life), this amounts to 15% per year. The 30% limit applies only to assets with shorter depreciation periods, such as battery storage systems.

The basis remains regular straight-line depreciation over the typical useful life of a PV system, which is 20 years. The extent to which these instruments have an impact in individual cases depends on the tax situation, the amount of profit, and the financing structure, and should be reviewed by a tax advisor. The article “Save on Photovoltaic Taxes with IAB and Depreciation” explains the full mechanics—the interaction of IAB, special depreciation, and declining-balance depreciation.

Classification as Business Assets

As business assets, a solar power system may also be relevant for transfer to the next generation: Inheritance and gift tax law provides for an exemption for eligible business assets (Sections 13a, 13b of the Inheritance Tax Act (ErbStG)). Whether and to what extent this exemption applies depends on numerous conditions—including holding periods and the distinction between business assets and administrative assets—and must always be assessed on a case-by-case basis for tax purposes.

Ownership and Liability: What the Model Covers

In short: Two elements provide structural safeguards for the model. First, the investor acquires civil law ownership of the facility (Section 903 of the German Civil Code (BGB)); in the event of the operator’s insolvency, this ownership is subject to a right of separation. Second, mediplan Helm e.K., as a registered merchant, is personally and unlimitedly liable (Sections 1, 17, 19 of the German Commercial Code (HGB)).

Ownership of the Facility

Ownership is the first pillar. Unlike with a subordinated loan or an unsecured bond, the investor becomes the owner of a tangible asset. If the plant operator files for bankruptcy, the asset is not included in the bankruptcy estate but can be set aside.

Liability of mediplan Helm e.K.

The second pillar is the contractual partner. Mediplan Helm e.K. is the sister company of Logic Glas GmbH within the Helm Group and acts as the contractual partner for direct PV investments. As a registered merchant, the owner is personally and fully liable with both business and personal assets pursuant to Sections 1, 17, and 19 of the German Commercial Code (HGB)—unlike in a GmbH, where liability is limited to the initial capital contribution.

Keeping an Eye on Risks

Important: Personal liability of the owner is a structural sign of trust, but it does not replace deposit insurance. A direct investment in a private equity fund remains an equity investment with risks that are specified in the specific contract:

• Fluctuating electricity prices and market values
• Weather Dependence of Electricity Generation
• technical equipment failure
• Changes to the legal framework (e.g., the 2027 EEG reform)

A Comparison of Investment Models

In short: Compared to the corporate model, a PV fund, and self-investment without a partner, the investor model differs in four key ways: who owns the system, where the returns go, who is responsible for operations, and how liability is structured.

Comparison: The Investor Model and Alternatives

Criterion	LE Investor Model	LE Business Model	PV Fund / Bond	Self-funded investment without a partner
The facility belongs to …	Investor	Logic Energy	Fund management company	Investor
The prize goes to …	Investor	Logic Energy	partly funds, partly investors	Investor
Operation and Maintenance	Logic Energy	Logic Energy	Fund manager	organize it yourself
IAB / Special Depreciation Allowance Available	fully usable	not relevant	limited	fully usable
Typical annual return	6–10% (before taxes)	Electricity Cost Savings	market standard 4–6%	typical for the market: 6–12%
Personal liability of the owner	yes	yes	no	N/A
Equity requirement	starting at around €100,000	0 €	starting at a few thousand euros	full purchase price
Structural comparison of the models. Return benchmark for the investor model: Helm Group, portfolio data for 2024 (6–10% p.a. before taxes). Comparative figures based on market standards (BSW-Solar, BNetzA). As of July 2026. This is not investment advice.

This comparison is limited to structural characteristics. The actual return depends on the property, location, type of marketing, and tax situation, and is calculated on a case-by-case basis.

Who This Model Is Suited For—and Who It Isn't

In short: This investment model is suitable for investors with six-figure equity who are looking to make a long-term investment in a managed tangible asset and who value ownership and personal liability over an anonymous fund structure. It is not the right tool for small amounts, short-term liquidity, or pure tax optimization.

This model is typically suitable for entrepreneurs, freelancers, asset managers, and private investors who want to shift a portion of their capital from interest-bearing investments into a real, actively managed asset with a long-term horizon. Those who can see a tangible investment and track its returns have a different relationship with their investment than someone who only has a fund report in PDF format. For many, it is also important that this is a tangible asset investment guided by ESG criteria that contributes to the energy transition.

This model is less suitable if the available equity is significantly below €100,000 or if the liquidity horizon is less than ten years—the sale requires a suitable buyer and does not offer stock market liquidity. The overview “Becoming a PV Investor” provides a more in-depth look at how photovoltaics fit into an asset allocation strategy as an asset class.

Outlook: What the 2027 EEG Reform Means

In short: Starting July 17, 2027, new EEG support contracts for plants with a capacity of 100 kW or more must be structured as bilateral contracts for difference (CfDs) in accordance with EU law. Plants commissioned by December 31, 2026, will remain under the current support scheme. As of July 2026, the national provisions in the EEG 2027 are still in the form of a draft bill.

For the investor model, this means that the timeframe under the current subsidy framework can still be used for projects with a secured grid connection, while new large-scale plants will switch to a guaranteed but capped revenue model starting in 2027. The article on the 2027 CfD requirement for PV investors outlines the details—the cutoff date, grandfathering provisions, and strategy.

Note: This article is intended solely for general informational purposes and does not constitute investment, tax, or legal advice. Return figures are based on historical data and are not a guarantee of future results. For advice tailored to your individual situation, please consult a licensed financial or tax advisor. All information is provided without warranty. As of July 2026.

Is the investor model your model?

An initial consultation—lasting one hour—will determine whether the Logic Energy investor model is a good fit for your situation—a specific investment, full electricity revenue, and a contractual partner with personal liability under Sections 1, 17, and 19 of the German Commercial Code (HGB).

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Frequently Asked Questions (FAQ)

Who receives the returns under the Logic Energy investor model?

The Investor. In the investor model, the investor purchases the plant and receives all of the electricity revenue after operating costs have been deducted. Logic Energy plans, builds, and operates the plant, but retains the revenue only in the separate corporate model (contracting).

What is the minimum investment amount?

The minimum investment is approximately €100,000 in equity. The total investment can be increased through various financing options—such as bank financing; the specific structure depends on the chosen investment and your individual financial situation.

What kind of return is realistic?

Historically, the Helm Group’s direct investments have yielded returns of 6 to 10 percent per year before taxes (2024 portfolio data); with tax leverage, returns of up to 10 to 12 percent are possible. Return figures are based on historical data and are not a guarantee of future results.

Do I need technical expertise?

No. Planning, permitting, construction, grid connection, and day-to-day operations are handled entirely by Logic Energy. The investor provides the capital and owns the facility, but does not have to worry about its technical operation.

Can I give the investment away as a gift or pass it on as an inheritance?

Yes. A solar power system can be transferred as business assets; inheritance and gift tax law provides for an exemption for eligible business assets (Sections 13a, 13b of the Inheritance and Gift Tax Act). Whether this exemption applies depends on several conditions and must be reviewed by a tax advisor on a case-by-case basis.

References

• Laws on the Internet – Section 7g of the Income Tax Act (Investment Tax Credit and Special Depreciation) – Investment Tax Credit of up to 50% (max. €200,000) and Special Depreciation of 40%
• Laws on the Internet – Section 7 of the Income Tax Act (Deduction for Depreciation) – Declining-Balance Depreciation under Paragraph 2
• Federal Ministry of Finance – Immediate Tax Investment Program – Declining-balance depreciation of up to 30%, purchases made between June 30, 2025, and January 1, 2028
• Laws on the Internet – Section 903 of the German Civil Code (BGB) (Powers of the Owner) – Basis of Property Rights Under Civil Law
• Laws on the Internet – Section 1 of the German Commercial Code (HGB) (Registered Merchant) – Legal Form “e.K.” and Basis of Liability
• Laws on the Internet – Section 48 of the Renewable Energy Sources Act (EEG) (Reference Values for Solar Power Systems) – Basis for Feed-in Tariffs
• Laws on the Internet – Section 51 of the EEG (Reduction in the Event of Negative Prices) – Suspension of Remuneration During Quarter-Hours with Negative Prices
• Laws on the Internet – Section 13a of the Inheritance Tax Act (Tax Exemption for Business Assets) – Exemption of Business Assets
• Federal Network Agency – EEG Subsidies and Subsidy Rates – 7.70 ct/kWh for partial feed-in up to 10 kWp, effective August 1, 2026
• German Solar Energy Society (DGS) – Annual Market Value for Solar Power in 2025 – Annual Market Value: 4.51 ct/kWh; Monthly Values for 2025
• Helm Group – About Us – Historical Portfolio Data (6–10% p.a.), Group Structure: Logic Glas GmbH / mediplan Helm e.K.
• Logic Energy – Become a PV Investor – Process Overview, System Types, and Terms of the Investor Model
• Logic Energy – Photovoltaic Investment 2026 – Classifying Photovoltaics as an Asset Class

Related Articles: PV Participation via the Inverter · CfD Requirement in 2027 for PV Investors

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