Germany · renewables
Battery storage in Hamm
4,918 storage units with 218.7 MW of gross capacity were in operation in Hamm (Nordrhein-Westfalen) as of 2026-11-05, with a further 45 units (614.4 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 Hamm (Nordrhein-Westfalen), and how large are they, as of 2026-11-05?
- 4,918 storage units with 218.7 MW of gross capacity were in operation in Hamm (Nordrhein-Westfalen) as of 2026-11-05, with a further 45 units (614.4 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 Hamm?
- 4,918 storage units with 218.7 MW of gross capacity were in operation in Hamm as of 2026-11-05, with a further 45 units (614.4 MW) registered as planned; the count includes every registered unit down to home batteries (Bundesnetzagentur, Marktstammdatenregister).
- How much battery storage capacity was commissioned in Hamm in 2025?
- 1,230 storage units with 6.80 MW went into operation in Hamm in 2025; the strongest year of the last two decades was 2024 with 181.0 MW (Bundesnetzagentur, Marktstammdatenregister).
- What share of Hamm's storage units are larger than 100 kW?
- 7 of 4,996 registered storage units in Hamm (0.1 percent) exceed 100 kW, but they hold 804.1 MW of the 833.2 MW total capacity (Bundesnetzagentur, Marktstammdatenregister).
- Which company operates the most battery storage capacity in Hamm?
- RWE Generation SE operates 3 storage units over 100 kW with 788.2 MW in Hamm, the largest organisational operator by registered capacity (Bundesnetzagentur, Marktstammdatenregister).
- Which technology has the most battery storage capacity in Hamm?
- Lithium-Batterie leads with 7 storage units and 804.1 MW in Hamm (Bundesnetzagentur, Marktstammdatenregister).
- What is the largest storage unit in Hamm?
- The largest registered storage unit in Hamm has 538.0 MW of gross capacity and is operated by RWE Generation SE, registered as planned (Bundesnetzagentur, Marktstammdatenregister).
How are the storage units in Hamm distributed by size class?
| Size class | Units | Capacity | In operation | Planned |
|---|---|---|---|---|
| up to 30 kW | 4,976 | 28.3 MW | 4,901 | 42 |
| 30 to 100 kW | 13 | 0.83 MW | 13 | 0 |
| over 100 kW | 7 | 804.1 MW | 4 | 3 |
How much battery storage capacity was commissioned in Hamm each year?
| Commissioning year | Units | Capacity added |
|---|---|---|
| 2026 | 1,268 | 21.8 MW |
| 2025 | 1,230 | 6.80 MW |
| 2024 | 1,012 | 181.0 MW |
| 2023 | 789 | 5.19 MW |
| 2022 | 240 | 1.60 MW |
| 2021 | 204 | 1.17 MW |
| 2020 | 99 | 0.63 MW |
| 2019 | 33 | 0.25 MW |
| 2018 | 31 | 0.19 MW |
| 2017 | 16 | 0.08 MW |
| 2016 | 9 | 0.06 MW |
| 2015 | 6 | 0.03 MW |
| 2014 | 10 | 0.07 MW |
| 2013 | 3 | 0.01 MW |
How many storage units in Hamm are in operation, planned or decommissioned?
| Status | Units | Capacity |
|---|---|---|
| planned | 45 | 614.4 MW |
| in operation | 4,918 | 218.7 MW |
| permanently decommissioned | 31 | 0.06 MW |
| temporarily shut down | 2 | 0.01 MW |
Which storage units over 100 kW are registered in Hamm?
| Unit | Capacity | Usable capacity | Status | Commissioned | Operator |
|---|---|---|---|---|---|
| Batteriespeicher Westfalen 3 | 538.0 MW | 1,145.6 MWh | planned | planned 2028 | RWE Generation SE |
| Batteriespeicher Westfalen 1 | 174.2 MW | 150.8 MWh | in operation | 2024-12-28 | RWE Generation SE |
| Batteriespeicher Westfalen 2 | 76.0 MW | 149.0 MWh | planned | planned 2026 | RWE Generation SE |
| BESS UW Heessen | 15.5 MW | 29.7 MWh | in operation | 2026-10-23 | Stadtwerke Hamm GmbH |
| DEX Hamm Campusgebäude | 0.15 MW | 240 kWh | in operation | 2025-09-04 | DEX |
| PV Batteriespeicher | 0.12 MW | 257 kWh | in operation | 2026-07-23 | Krampe GmbH ＆ Co. KG |
| VAR Hamm | 0.12 MW | 261 kWh | planned | planned 2026 | Licinio Carvalho Vaz ＆ Haci Sefa Arslan eGbR |
Which organisations operate the most battery storage capacity in Hamm?
| Operator | Units | Capacity |
|---|---|---|
| RWE Generation SE | 3 | 788.2 MW |
| Stadtwerke Hamm GmbH | 1 | 15.5 MW |
| DEX | 1 | 0.15 MW |
| Krampe GmbH ＆ Co. KG | 1 | 0.12 MW |
| Licinio Carvalho Vaz ＆ Haci Sefa Arslan eGbR | 1 | 0.12 MW |
Which technology accounts for the most battery storage capacity in Hamm?
| Technology | Units | Capacity |
|---|---|---|
| Lithium-Batterie | 7 | 804.1 MW |
Battery storage in Nordrhein-Westfalen · 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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