EEG Law for Photovoltaics: All the Regulations Every PV Operator Needs to Know

The EEG law for photovoltaics is an indispensable topic for all solar system operators and interested parties in Germany. It not only governs the feed-in tariff but also technical requirements, reporting obligations, and the legal framework for the entire operation of a photovoltaic system. Understanding this law allows you to plan your system optimally, operate it correctly, and make full use of all financial benefits.

This article explains the most important aspects of the EEG photovoltaic law in plain language, practical and focused on what matters most.

What does the EEG law specifically regulate for photovoltaics?

The EEG photovoltaic law stipulates the conditions under which solar system operators receive a state feed-in tariff. The basic rule: anyone in Germany who operates a PV system and feeds electricity into the public grid is entitled to remuneration, provided the system is properly registered and technical requirements are met.

Central to the EEG photovoltaic law is the entitlement to remuneration, which depends on system size, commissioning date, and the chosen feed-in model. Small rooftop systems up to 10 kWp typically receive higher tariff rates than larger ground-mounted systems.

PV system registration: step by step

Before commissioning your PV system and claiming the feed-in tariff, several registration steps are required:

1. Registration with the grid operator: Before installation, you must register your system with the responsible grid operator. They check grid compatibility and approve the connection.
2. Registration in the Marktstammdatenregister: Every PV system must be entered in the Bundesnetzagentur’s central register within one month of commissioning. This is legally mandatory.
3. Metering infrastructure: A feed-in meter must be installed to measure the electricity fed in separately.
4. Technical compliance: The system must meet the grid operator’s technical connection requirements (TAB).

A good photovoltaic installer usually handles all these steps and ensures that the EEG photovoltaic law is correctly complied with.

Full feed-in under the EEG: when does this model make sense?

The EEG photovoltaic law provides for two basic feed-in models: full feed-in and self-consumption with surplus feed-in. With full feed-in, all generated electricity is fed into the grid, the operator purchases their household electricity separately from the supplier.

This model is financially attractive when the feed-in tariff rate exceeds the avoided electricity purchase price, or when the self-consumption potential is low. In practice, full feed-in is most relevant for large commercial installations – for private households, self-consumption is generally more profitable.

EEG self-consumption regulations: using your own solar power

In the self-consumption model, the operator uses the generated solar electricity for their own needs first and only feeds the surplus into the grid. The EEG photovoltaic law stipulates that the feed-in tariff still applies to the portion fed in.

Self-consumption has gained significant importance in recent years, not least due to rising electricity prices. Those who increase their self-consumption rate through battery storage can substantially improve their system’s economic viability.

Conclusion

The EEG photovoltaic law is the legal framework on which every solar investment in Germany is built. Those who know and correctly apply the regulations benefit for decades from predictable income, state support, and legal certainty.

Visit PVPro Solar GmbH and get comprehensive advice on the EEG and photovoltaics now.

What is the EEG Act for photovoltaics?

The EEG Photovoltaic Act regulates the promotion of electricity from renewable energy sources in Germany. For PV system operators, it is especially important because it defines feed-in tariffs, technical requirements, registration obligations, and rights toward the grid operator. Anyone who feeds solar electricity into the public grid may receive legally regulated compensation under certain conditions.

How high is the EEG feed-in tariff for photovoltaics?

The amount of the EEG feed-in tariff depends on the commissioning date, system size, and feed-in model. Smaller rooftop systems have different tariff rates than larger systems. A distinction is also made between surplus feed-in and full feed-in. The Federal Network Agency regularly publishes the current EEG subsidy rates for solar systems.

Do I have to register my photovoltaic system?

Yes, a photovoltaic system must be registered with the responsible grid operator and, after commissioning, in the Market Master Data Register of the Federal Network Agency. Registration in the Market Master Data Register is necessary so that the system is legally recorded and the right to EEG compensation can be secured.

What is the difference between full feed-in and self-consumption?

With full feed-in, all generated solar electricity is fed into the public grid. In return, operators receive EEG compensation for the entire amount of electricity. With self-consumption, the solar electricity is first used in the household or business itself, and only the surplus electricity is fed into the grid. For private households, self-consumption is often particularly attractive because it reduces the amount of electricity that must be purchased from the energy supplier.

How long is the EEG feed-in tariff paid?

The EEG feed-in tariff is usually guaranteed for newly installed PV systems for 20 years. The commissioning date is decisive because the tariff rates valid at that time are fixed for the payment period. This gives operators better planning security for their investment.

What obligations does the grid operator have under the EEG?

Under the EEG, the grid operator is obliged to connect a properly registered photovoltaic system, accept the fed-in solar electricity, and pay the corresponding feed-in tariff. The grid operator must also provide information about relevant technical connection requirements. These obligations are important for PV operators because they create legal security when operating the system.

Is photovoltaics still worthwhile with the EEG feed-in tariff?

Yes, photovoltaics can still be worthwhile, especially when a high share of the generated electricity is used directly. The EEG feed-in tariff further improves profitability because surplus electricity is not wasted but can be fed into the grid and compensated. Key factors include system size, self-consumption rate, electricity price, battery storage solution, and the current tariff rates.