Germany · renewables
Battery storage in Weimar
1,222 storage units with 7.75 MW of gross capacity were in operation in Weimar (Thüringen) as of 2026-11-05, with a further 12 units (0.08 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 Weimar (Thüringen), and how large are they, as of 2026-11-05?
- 1,222 storage units with 7.75 MW of gross capacity were in operation in Weimar (Thüringen) as of 2026-11-05, with a further 12 units (0.08 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 Weimar?
- 1,222 storage units with 7.75 MW of gross capacity were in operation in Weimar as of 2026-11-05, with a further 12 units (0.08 MW) registered as planned; the count includes every registered unit down to home batteries (Bundesnetzagentur, Marktstammdatenregister).
- How much battery storage capacity was commissioned in Weimar in 2025?
- 252 storage units with 1.17 MW went into operation in Weimar in 2025; the strongest year of the last two decades was 2024 with 1.42 MW (Bundesnetzagentur, Marktstammdatenregister).
- What share of Weimar's storage units are larger than 100 kW?
- 3 of 1,246 registered storage units in Weimar (0.2 percent) exceed 100 kW, but they hold 1.65 MW of the 7.86 MW total capacity (Bundesnetzagentur, Marktstammdatenregister).
- Which company operates the most battery storage capacity in Weimar?
- immitec Energie ESS GmbH ＆ Co.KG operates 1 storage units over 100 kW with 1.29 MW in Weimar, the largest organisational operator by registered capacity (Bundesnetzagentur, Marktstammdatenregister).
- Which technology has the most battery storage capacity in Weimar?
- Lithium-Batterie leads with 3 storage units and 1.65 MW in Weimar (Bundesnetzagentur, Marktstammdatenregister).
- What is the largest storage unit in Weimar?
- The largest registered storage unit in Weimar has 1.29 MW of gross capacity and is operated by immitec Energie ESS GmbH ＆ Co.KG, commissioned 2026-07-23 (Bundesnetzagentur, Marktstammdatenregister).
How are the storage units in Weimar distributed by size class?
| Size class | Units | Capacity | In operation | Planned |
|---|---|---|---|---|
| up to 30 kW | 1,240 | 6.08 MW | 1,216 | 12 |
| 30 to 100 kW | 3 | 0.13 MW | 3 | 0 |
| over 100 kW | 3 | 1.65 MW | 3 | 0 |
How much battery storage capacity was commissioned in Weimar each year?
| Commissioning year | Units | Capacity added |
|---|---|---|
| 2026 | 253 | 2.84 MW |
| 2025 | 252 | 1.17 MW |
| 2024 | 262 | 1.42 MW |
| 2023 | 238 | 1.25 MW |
| 2022 | 86 | 0.39 MW |
| 2021 | 60 | 0.26 MW |
| 2020 | 38 | 0.15 MW |
| 2019 | 8 | 0.04 MW |
| 2018 | 4 | 0.13 MW |
| 2017 | 17 | 0.07 MW |
| 2016 | 6 | 0.02 MW |
| 2015 | 3 | 0.01 MW |
| 2014 | 4 | 0.02 MW |
| 2013 | 1 | 0.01 MW |
| 2012 | 1 | 0.00 MW |
How many storage units in Weimar are in operation, planned or decommissioned?
| Status | Units | Capacity |
|---|---|---|
| in operation | 1,222 | 7.75 MW |
| planned | 12 | 0.08 MW |
| permanently decommissioned | 11 | 0.03 MW |
| temporarily shut down | 1 | 0.01 MW |
Which storage units over 100 kW are registered in Weimar?
| Unit | Capacity | Usable capacity | Status | Commissioned | Operator |
|---|---|---|---|---|---|
| BESS Weimar | 1.29 MW | 2.6 MWh | in operation | 2026-07-23 | immitec Energie ESS GmbH ＆ Co.KG |
| Batteriespeicher IBU-tec | 0.25 MW | 458 kWh | in operation | 2026-10-08 | IBU-tec advanced materials AG |
| Batteriespeicher | 0.11 MW | 112 kWh | in operation | 2018-12-20 | IAB Weimar gGmbH |
Which organisations operate the most battery storage capacity in Weimar?
| Operator | Units | Capacity |
|---|---|---|
| immitec Energie ESS GmbH ＆ Co.KG | 1 | 1.29 MW |
| IBU-tec advanced materials AG | 1 | 0.25 MW |
| IAB Weimar gGmbH | 1 | 0.11 MW |
Which technology accounts for the most battery storage capacity in Weimar?
| Technology | Units | Capacity |
|---|---|---|
| Lithium-Batterie | 3 | 1.65 MW |
Battery storage in Thüringen · 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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