Energy system analyst / grid planner for large-scale battery storage systems (m/f/d)

Celstor GmbH is a young, dynamically growing company in the field of large-scale battery storage solutions (BESS and photovoltaics), which play a key role in the energy transition and future network stability. We think energy new – entrepreneurial, technology-driven and with a clear focus on economy and scalability. Guided by the founder and shareholder Sven Wendt, we are now looking for a strong operational management personality as an energy system analyst / mains planner large battery storage (m/w/d), which takes over the clock transmission between the data analysis and the development team as well as network connection planning.

We are looking for an experienced energy system analyst with a deep understanding of medium and high voltage networks to build a nationwide network database and a scalable pipeline for evaluating mains connections for large battery storage. In this role you define the technical foundation of the system and create the basis for data model, evaluation system and network logic.

Development of the technical data model for network operators, network connection points, voltage levels, free capacity, bottlenecks and expansion projects Technical definition of the assessment logic for the location assessment of large battery storage Analysis and interpretation of network development plans, bottleneck information and capacity data Definition of technical requirements for data collection for distribution system operators Specification of validation and plausibility rules for the data pipeline Operationalization of N-1 Criteria, Redispatch Data and Network Stress Points Technical contact for developer team, project management and external stakeholders

The position is not designed as a classic network planning. The focus is on the translation of network expertise into a scalable data system — a task that combines analytical depth knowledge with structured thinking in data categories. Priorities in the construction phase:

Development of the technical data model: definition of all relevant entities (network links, voltage levels, free capacities, network operators, bottleneck indicators) and their attributes and logical relationships Technical specification of the evaluation logic for network connection sites — criteria, weightings, exclusion conditions Close cooperation with the technical development team as a central technical interface clarification of the regulatory framework conditions for the structured data request for distribution system operators

Running operation: Quality assurance of incoming network data: content plausibility check regardless of the technical processing level Preparation and structuring of direct requests to distribution network operators — Content, formats, contact identification Technical assessment of network connection sites with regard to suitability, technical restrictions and risk of procedures at MS/HS level Continuous development of assessment logic and technical system definitions as a function of regulatory developments and market changes Technical representation of the project in technical preliminary discussions with network operators

Compulsory conditions Complete studies in energy engineering, electrical engineering or industrial engineering with a focus on energy Multiannual professional experience in networking, ideal for VNB, TSO, Planning Office or Regulatory Authority Very good understanding of network sites, network connection procedures and capacity assessment Experience in the evaluation and analysis of technical network data and regulatory frameworks Structured, analytical and interdisciplinary working methods Confidence with the German network operator landscape: structures, communication paths, data availability Impressed readiness for data-related work: An essential part of the activity is the technical quality assurance of data contents — this is core task, not marginal activity! Advantage

Experience with large-scale storage projects or renewable production plants Knowledge of network calculation software such as DIgSILENT, NEPLAN or PSS®E Basic knowledge of GIS as well as experience with BNetzA and MaStR processes

The enrolled position is the only energy expert position in the core team. Consultative decisions in the field are completely in the responsibility of the body owner — this requires a high degree of certainty of judgement and self-responsibility, but at the same time opens up a professional scope which is not given in established network companies or planning offices in this form. The position is aimed at professionals who want to use their network expertise in a new application context — and who understand the step from operating network planning to data-driven system design as a professional development. We offer Direct line of management — short decision-making, high self-responsibility Thematically challenging project at the interface of energy management and modern data technology Flexible work design, predominantly remote Market-friendly remuneration — fixed order or project-based freelance contract Active participation of the technical foundation from the start of the project