Germany · renewables
Battery storage in Groß-Gerau
8,207 storage units with 52.2 MW of gross capacity were in operation in Groß-Gerau (Hessen) as of 2026-11-05, with a further 92 units (7.37 MW) registered as planned (Bundesnetzagentur, Marktstammdatenregister) — every unit over 100 kW with capacity, status, commissioning date and operator, from the Marktstammdatenregister.
Questions this page answers
- How many storage units are registered in Groß-Gerau (Hessen), and how large are they, as of 2026-11-05?
- 8,207 storage units with 52.2 MW of gross capacity were in operation in Groß-Gerau (Hessen) as of 2026-11-05, with a further 92 units (7.37 MW) registered as planned (Bundesnetzagentur, Marktstammdatenregister) — every unit over 100 kW with capacity, status, commissioning date and operator, from the Marktstammdatenregister.
- How many storage units are in operation in Groß-Gerau?
- 8,207 storage units with 52.2 MW of gross capacity were in operation in Groß-Gerau as of 2026-11-05, with a further 92 units (7.37 MW) registered as planned; the count includes every registered unit down to home batteries (Bundesnetzagentur, Marktstammdatenregister).
- How much battery storage capacity was commissioned in Groß-Gerau in 2025?
- 1,661 storage units with 9.96 MW went into operation in Groß-Gerau in 2025; the strongest year of the last two decades was 2023 with 13.6 MW (Bundesnetzagentur, Marktstammdatenregister).
- What share of Groß-Gerau's storage units are larger than 100 kW?
- 5 of 8,337 registered storage units in Groß-Gerau (0.1 percent) exceed 100 kW, but they hold 7.83 MW of the 59.6 MW total capacity (Bundesnetzagentur, Marktstammdatenregister).
- Which company operates the most battery storage capacity in Groß-Gerau?
- Sonnen Solarpark 20241 GmbH operates 1 storage units over 100 kW with 6.67 MW in Groß-Gerau, the largest organisational operator by registered capacity (Bundesnetzagentur, Marktstammdatenregister).
- Which technology has the most battery storage capacity in Groß-Gerau?
- Lithium-Batterie leads with 4 storage units and 1.16 MW in Groß-Gerau (Bundesnetzagentur, Marktstammdatenregister).
- What is the largest storage unit in Groß-Gerau?
- The largest registered storage unit in Groß-Gerau has 6.67 MW of gross capacity and is operated by Sonnen Solarpark 20241 GmbH, registered as planned (Bundesnetzagentur, Marktstammdatenregister).
How are the storage units in Groß-Gerau distributed by size class?
| Size class | Units | Capacity | In operation | Planned |
|---|---|---|---|---|
| up to 30 kW | 8,315 | 50.9 MW | 8,186 | 91 |
| 30 to 100 kW | 17 | 0.94 MW | 17 | 0 |
| over 100 kW | 5 | 7.83 MW | 4 | 1 |
How much battery storage capacity was commissioned in Groß-Gerau each year?
| Commissioning year | Units | Capacity added |
|---|---|---|
| 2026 | 1,604 | 9.45 MW |
| 2025 | 1,661 | 9.96 MW |
| 2024 | 1,682 | 11.5 MW |
| 2023 | 1,926 | 13.6 MW |
| 2022 | 586 | 3.37 MW |
| 2021 | 333 | 1.84 MW |
| 2020 | 194 | 1.10 MW |
| 2019 | 99 | 0.56 MW |
| 2018 | 56 | 0.26 MW |
| 2017 | 48 | 0.24 MW |
| 2016 | 25 | 0.14 MW |
| 2015 | 14 | 0.08 MW |
| 2014 | 9 | 0.10 MW |
| 2013 | 5 | 0.02 MW |
How many storage units in Groß-Gerau are in operation, planned or decommissioned?
| Status | Units | Capacity |
|---|---|---|
| in operation | 8,207 | 52.2 MW |
| planned | 92 | 7.37 MW |
| permanently decommissioned | 36 | 0.11 MW |
| temporarily shut down | 2 | 0.01 MW |
Which storage units over 100 kW are registered in Groß-Gerau?
| Unit | Capacity | Usable capacity | Status | Commissioned | Operator |
|---|---|---|---|---|---|
| Photovoltaik-Speicher-Kraftwerk Büttelborn | 6.67 MW | 13.3 MWh | planned | planned 2027 | Sonnen Solarpark 20241 GmbH |
| Hochschule RheinMain, Rüsselsheim, Stromspeicher Clever | 0.70 MW | 656 kWh | in operation | 2023-09-15 | Hochschule RheinMain |
| PV Batterie PHL | 0.19 MW | 190 kWh | in operation | 2023-07-12 | Sohoco Energy GmbH |
| PV Batterie PHS | 0.16 MW | 32 kWh | in operation | 2024-06-27 | Sohoco Energy GmbH |
| Raiffeisen Waren Zentrale AG Standort Riedstadt - Batteriespeicher | 0.11 MW | 215 kWh | in operation | 2026-04-08 | Raiffeisen Waren-Zentrale Rhein-Main AG |
Which organisations operate the most battery storage capacity in Groß-Gerau?
| Operator | Units | Capacity |
|---|---|---|
| Sonnen Solarpark 20241 GmbH | 1 | 6.67 MW |
| Hochschule RheinMain | 1 | 0.70 MW |
| Sohoco Energy GmbH | 2 | 0.35 MW |
| Raiffeisen Waren-Zentrale Rhein-Main AG | 1 | 0.11 MW |
Which technology accounts for the most battery storage capacity in Groß-Gerau?
| Technology | Units | Capacity |
|---|---|---|
| Lithium-Batterie | 4 | 1.16 MW |
Battery storage in Hessen · Battery storage in Germany
Source: Bundesnetzagentur, Marktstammdatenregister (MaStR), full data export of 2026-11-05, Datenlizenz Deutschland – Namensnennung – Version 2.0. Counts and capacity by district, size class, commissioning year and status cover every registered unit, including small rooftop and balcony systems. Unit lists, operators and grid operators cover units over 100 kW gross capacity; units operated by private individuals are shown without name, operator or coordinates. Capacity is gross capacity (Bruttoleistung) as registered; planned units are those registered as 'In Planung'. District (Landkreis) is the register's own assignment. Source record.
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