REGIOlink - THE CONNECTION OF STORAGE AND GRID

With the REGIOlink model, green flexibility has developed a practice-oriented concept for the regional grid-supporting operation of large-scale battery storage systems. While terms such as “grid-supportive” or “grid-neutral” are currently under discussion, there is often a lack of a uniform and clear regulatory definition.

This is precisely where the white paper from the Research Center for Energy Economics (FfE) comes in: It offers a sound framework for classifying battery storage operating modes - with a focus on the grid effect, not on a specific control instrument.

green flexibility is now taking the next step: the battery storage project in Immenstadt is serving as the first reference plant, in which all the key building blocks are already being tested today.

Intelligent operating strategies that respond to local grid situations

Clear criteria and structured processes for integration

More predictability in grid operation - without additional effort

Technically feasible and economically viable for operators

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While the industry debates terminology - we want to offer solutions and concepts. The first storage system is already running under the REGIOlink model. The first results on operation and practical integration into grid operation management will then be visible and shareable.

Christoph Ostermann
Co-Founder & CEO

RULE-BASED DEFINITIONS FOR SUSTAINABLE GRID INTEGRATION

As part of the REGIOlink concept, green flexibility relies on clearly defined terms for the grid impact of battery storage systems. These definitions refer to the actual effect of an operation on the electricity grid and are intended to provide guidance where local grid bottlenecks make an adjustment necessary in the grid connection process. The decisive factor is the contribution to the grid situation and the associated costs.

The terms are open to all technologies, are not tied to specific market roles or control instruments and provide a comprehensible basis for fair, grid-related solutions.

The classification should only apply if grid restrictions actually exist:

GRID-BURDENING

An operation that requires additional grid capacity in a specific grid situation and can therefore cause grid expansion or higher grid costs.

GRID-NEUTRAL

An operation that adapts in such a way that no additional costs are incurred for grid expansion despite existing grid restrictions, thereby helping to avoid additional grid costs.

GRID-SUPPORTIVE

An operation that goes beyond grid neutrality to actively relieve grid congestion and thus contribute to reducing grid costs - regardless of who initiates the operation.

Important here:

A grid connection in accordance with Section 17 EnWG does not automatically mean that a storage facility has a grid-loading effect. The grid impact depends on the location and results from the actual mode of operation, not from the EnWG paragraph.
Storage facilities that are operated in a way that serves the market and the system in particular often behave in a grid-compatible manner - blanket assessments are therefore not expedient
§Section 11 a EnWG is an invitation to tender, not a definition of grid serviceability

REGIO link makes precisely this classification operationally usable - and creates the basis for fair, comprehensible and economically viable solutions in dialogue with grid operators without legitimizing restrictions across the board.

YOUR REGIOlink CONTACT

Christina Hepp
Director Strategy

christina.hepp[at]green-flexibility.com

REGIOlink - BLOG

"REGIOlink" concept for regional grid support – first implementation already underway

With its “REGIOlink” model, green flexibility has developed a practice-oriented and cooperative concept for regionally grid-supportive operation of large-scale battery storage systems. While terms like “grid-supportive” or “grid-neutral” are currently widely discussed, a uniform and regulatory clear definition is often missing. This is exactly where the white paper (in German) by the Research Center for Energy Economics (Forschungsstelle für Energiewirtschaft, FfE) comes in.

3 min read

Consistent definitions help – for an optimized grid connection process

In particular, the term grid-supportive is being heavily overused. Our goal is not so much to discuss terminology, but rather to focus on concepts and solutions. Battery storage systems are considered an essential element of the energy transition – and rightly so. But the reality is more complex: The current boom in grid connection applications shows that, while storage systems are on trend, new challenges are emerging.

2 min read

A Day in the German Power Grid – and What It Teaches Us

Between Power Price and Grid Constraints – Why Regional Grid Signals Are Crucial for Battery Storage Systems The expansion of battery energy storage systems (BESS) is essential for the energy transition. But as the market grows, so does its complexity: national market mechanisms increasingly collide with regional grid realities. The following example illustrates why battery storage must be operated not only economically but also in a grid-supportive way: