Connection applications (to Q3 2025)
717
Tool 04
Grid Connection Navigator
The grid connection is the critical path of every BESS project. The Grid Connection Navigator structures your project: from power, location and project type it derives the likely voltage level, identifies the responsible grid operator type (distribution or transmission) and shows which documents the grid connection request must contain.
You receive a phase overview with realistic timelines — from pre-check through the formal request and grid study to the connection offer — and an assessment of whether your target COD fits the typical connection process.
How it works
- 01
Enter location and project frame: country/region, project type, target COD.
- 02
Provide technical parameters: discharge and charge power, capacity, known grid parameters.
- 03
Get the assessment: voltage level, operator type, document checklist, phases with timelines.
01 Location & project
02 Technical parameters
03 Result
Grid connection radar
Where the transmission grid offers connection prospects.
Under the maturity procedure, the four TSOs publish substations with an expected earliest connection year. The list is updated with each procedure round; coordinates are indicative.
of which battery storage
545
requested storage capacity
211 GW
already approved
51 GW
Demand 2037 (grid plan scenarios)
41–94 GW
| TSO | Substation | Earliest connection year | Note | Coordinates |
|---|---|---|---|---|
| TenneT | Cappeln West | 2030 | — | 52.802, 8.016 |
| TenneT | Garrel Ost | 2030 | — | 52.948, 8.079 |
| TenneT | Göhl West | 2030 | Nur Last zulässig | 54.285, 10.927 |
| TenneT | Großenmeer | 2031 | — | 53.262, 8.339 |
| TenneT | Hochwöhrden | 2031 | Nur Last zulässig | 54.162, 9.046 |
| TenneT | Neuenkirchen | 2031 | — | 53.248, 8.530 |
| TenneT | Sande | 2033 | — | 53.487, 7.994 |
| TenneT | Pleinting | 2034 | — | 48.667, 13.104 |
| TenneT | Kiel Rönne | 2036 | — | 54.266, 10.165 |
| TenneT | Wenzenbach | 2036 | — | 49.081, 12.139 |
Maturity procedure in brief
- 01Application fee €50,000 per application; realisation bond €1,500/MW on offer acceptance (credited against construction cost contribution).
- 02Scoring in 4 categories (land & permitting, technology, capability, grid benefit) with max. 11 points; ties broken by waiting time, site-binding, lottery.
- 03Cycle 1: applications until 30 Jun 2026, cluster study until 30 Nov 2026, offer acceptance until 31 Dec 2026 – annual rounds thereafter.
As of 2026-09-14. Sources: TenneT grid connection requests, Amprion storage page, TransnetBW/Amprion press release on the maturity procedure (Feb 2026), procedure documentation of the four TSOs (netztransparenz.de).
Methodology and scope
The voltage-level heuristic follows German practice: up to ~10 MW medium voltage (10–30 kV, distribution system operator), utility-scale up to ~100 MW typically 110 kV, above that extra-high voltage (220/380 kV, transmission system operator). Timelines (3–9 months MV, 9–18 months 110 kV, 12–24+ months EHV) are indicative market values — queues and responsibilities vary regionally.
Next step
Start your project or talk to us — we will connect you with the right contact.