New Product Feature | EEG Subsidy integrated into our modelling

3 min read

Share

Share on X Share on LinkedIn Copy Link

We launched another significant enhancement to the Re-Twin Energy modeling engine: the integration of EEG subsidy mechanics into revenue simulations. This update enables developers, investors, and asset owners to accurately assess the financial viability of their systems under the German Renewable Energy Act (EEG).

Why This Matters

The EEG subsidy plays a crucial role in determining project revenues for both behind-the-meter (BTM) and front-of-the-meter (FTM) setups. By integrating this support mechanism into our platform, we provide users with a more complete and regulatory-compliant view of their project’s revenue potential.

For BTM systems, where PV and storage are tightly coupled on-site, correct modeling of EEG implications is essential to avoid compliance risks. For FTM projects, the EEG market premium can be a critical component in securing financing and long-term profitability.

What’s New in the Modeling Logic?

Our EEG simulation module now includes:

• Market Premium Calculations

We account for the EEG market premium by simulating the spread between the reference value and actual market prices, including 6-hour negative price thresholds.

• Battery Operation Rules

The logic reflects key EEG constraints, including:

- No double compensation: EEG premium is paid once per kWh, even if stored and sold later.
- PV-only charging: Stored energy must originate from PV to qualify for the subsidy.
- Separate metering requirements: Clear distinction between PV generation, battery activity, and grid interactions is mandatory.

• Revenue Optimization Scenarios

Our simulations evaluate storage dispatch strategies that comply with EEG regulations while optimizing returns, particularly important for load shifting and peak shaving.

How You Benefit

With this new feature, you can:

• Precisely understandt total project revenues under EEG support
• Make informed investment and operational decisions

Want to see what this means for your project?

Log in to the platform and test the new feature, or get in touch for a personalized demo:

https://app.re-twin.energy

About the Author

Florian Heise

Florian Heise is a energy-industry specialist with experience in consulting, logistics tech, and green-hydrogen development. As former head of strategic projects, he researched BESS and energy-storage markets across Germany and the EU. Today, he uses that knowledge as co-founder of Re-Twin Energy. Florian holds a Master’s in Finance & Accounting from Freie Universität Berlin and has even run a small coffee-import venture.

Dive into insights, trends & innovation​

November 6, 2024

Industry Update | Germany’s Energy Storage Boom - 161 GW in Connection Requests Filed with TSOs

Germany is seeing a massive “gold rush” in energy storage, with a record-breaking 161 GW worth of connection requests for battery energy storage systems (BESS) flooding the country’s TSOs. This demand, which far surpasses even the long-term forecasts for 2045, brings big questions and opportunities for policymakers, investors, and grid operators.

November 6, 2024

New Product Feature | Explore BESS Revenue Potential on our new Landing Page!

We're excited to announce the launch of our latest feature: a new landing page designed to visualize the revenue potential for a stand-alone battery participating in multiple energy markets

October 31, 2025

Re-Twin Energy is now available in German

Re-Twin Energy is now fully available in German, making it easier for our growing community in the DACH region to navigate and use the platform.