en.Wedoany.com Reported - Green Flexibility has developed a flexible grid connection agreement template based on its operational experience with a 15 MW/33 MWh battery storage project in Immenstadt, Bavaria, Germany, and negotiations with 15 different distribution system operators.
The company stated that the template draws on the operational practices of the aforementioned battery project over the past year under the requirements of Allgäuer Überlandwerk, while integrating the outcomes of consultations with multiple grid operators.
This blueprint identifies which contractual terms have proven practical, while also pointing out that certain stricter approaches have limited system flexibility without improving grid security.
According to Green Flexibility, the model agreement aims to provide a practical template for future flexible grid connection agreements between battery storage developers and grid operators. Allgäu Netz plans to apply this framework within its service area next year to connect more large-scale battery storage projects.
Volker Wiegand, Managing Director of Allgäu Netz, told Green Flexibility that overly broad or excessively stringent requirements for flexible grid connection agreements could hinder energy storage systems from providing flexibility to the grid. He emphasized the need for practical operational models that maintain grid security while allowing storage assets to perform their system functions.
The blueprint includes dynamic power limits, curtailment models based on full-load hours, and coordinated control of ancillary services. The approach distinguishes between grid-neutral and grid-supportive operations, setting operational limits based on actual grid conditions rather than fixed thresholds.
Wiegand also noted that some current proposals for flexible grid connection agreements from large distribution system operators focus too much on restricting storage operations rather than achieving grid-compatible integration. He argued that the responsibility for forecasting and operational constraints should remain with grid operators, as they possess the relevant network data and are responsible for system security.
