Germany · renewables
Battery storage in Siegen-Wittgenstein
9,731 storage units with 57.9 MW of gross capacity were in operation in Siegen-Wittgenstein (Nordrhein-Westfalen) as of 2026-11-05, with a further 64 units (0.67 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 Siegen-Wittgenstein (Nordrhein-Westfalen), and how large are they, as of 2026-11-05?
- 9,731 storage units with 57.9 MW of gross capacity were in operation in Siegen-Wittgenstein (Nordrhein-Westfalen) as of 2026-11-05, with a further 64 units (0.67 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 Siegen-Wittgenstein?
- 9,731 storage units with 57.9 MW of gross capacity were in operation in Siegen-Wittgenstein as of 2026-11-05, with a further 64 units (0.67 MW) registered as planned; the count includes every registered unit down to home batteries (Bundesnetzagentur, Marktstammdatenregister).
- How much battery storage capacity was commissioned in Siegen-Wittgenstein in 2025?
- 1,736 storage units with 9.53 MW went into operation in Siegen-Wittgenstein in 2025; the strongest year of the last two decades was 2023 with 14.2 MW (Bundesnetzagentur, Marktstammdatenregister).
- What share of Siegen-Wittgenstein's storage units are larger than 100 kW?
- 2 of 9,846 registered storage units in Siegen-Wittgenstein (0.0 percent) exceed 100 kW, but they hold 0.23 MW of the 58.7 MW total capacity (Bundesnetzagentur, Marktstammdatenregister).
- Which company operates the most battery storage capacity in Siegen-Wittgenstein?
- Asdorfer Eisenwerke GmbH operates 1 storage units over 100 kW with 0.12 MW in Siegen-Wittgenstein, the largest organisational operator by registered capacity (Bundesnetzagentur, Marktstammdatenregister).
- Which technology has the most battery storage capacity in Siegen-Wittgenstein?
- Lithium-Batterie leads with 2 storage units and 0.23 MW in Siegen-Wittgenstein (Bundesnetzagentur, Marktstammdatenregister).
- What is the largest storage unit in Siegen-Wittgenstein?
- The largest registered storage unit in Siegen-Wittgenstein has 0.12 MW of gross capacity and is operated by Asdorfer Eisenwerke GmbH, registered as planned (Bundesnetzagentur, Marktstammdatenregister).
How are the storage units in Siegen-Wittgenstein distributed by size class?
| Size class | Units | Capacity | In operation | Planned |
|---|---|---|---|---|
| up to 30 kW | 9,827 | 57.7 MW | 9,714 | 62 |
| 30 to 100 kW | 17 | 0.79 MW | 16 | 1 |
| over 100 kW | 2 | 0.23 MW | 1 | 1 |
How much battery storage capacity was commissioned in Siegen-Wittgenstein each year?
| Commissioning year | Units | Capacity added |
|---|---|---|
| 2026 | 2,083 | 11.3 MW |
| 2025 | 1,736 | 9.53 MW |
| 2024 | 1,678 | 11.2 MW |
| 2023 | 2,237 | 14.2 MW |
| 2022 | 947 | 5.77 MW |
| 2021 | 581 | 3.30 MW |
| 2020 | 294 | 1.64 MW |
| 2019 | 108 | 0.57 MW |
| 2018 | 36 | 0.18 MW |
| 2017 | 33 | 0.14 MW |
| 2016 | 13 | 0.07 MW |
| 2015 | 12 | 0.06 MW |
| 2014 | 14 | 0.07 MW |
| 2013 | 7 | 0.03 MW |
| 2010 | 1 | 0.00 MW |
How many storage units in Siegen-Wittgenstein are in operation, planned or decommissioned?
| Status | Units | Capacity |
|---|---|---|
| in operation | 9,731 | 57.9 MW |
| planned | 64 | 0.67 MW |
| permanently decommissioned | 48 | 0.14 MW |
| temporarily shut down | 3 | 0.02 MW |
Which storage units over 100 kW are registered in Siegen-Wittgenstein?
| Unit | Capacity | Usable capacity | Status | Commissioned | Operator |
|---|---|---|---|---|---|
| Batteriespeicher Röcher | 0.12 MW | 120 kWh | planned | planned 2026 | Asdorfer Eisenwerke GmbH |
| Grün PV 2025 Speicher | 0.11 MW | 101 kWh | in operation | 2024-10-15 | Grün GmbH |
Which organisations operate the most battery storage capacity in Siegen-Wittgenstein?
| Operator | Units | Capacity |
|---|---|---|
| Asdorfer Eisenwerke GmbH | 1 | 0.12 MW |
| Grün GmbH | 1 | 0.11 MW |
Which technology accounts for the most battery storage capacity in Siegen-Wittgenstein?
| Technology | Units | Capacity |
|---|---|---|
| Lithium-Batterie | 2 | 0.23 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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