BESS - 50 MW pre-RTB, COD 2029 (świętokrzyskie)

For sale: a BESS project with a capacity of 50 MW and 199.73 MWh, located in southern Poland. The project is at an advanced stage of development, with planned RTB status by Q4 2026 and an anticipated grid connection date in March 2029 (with the possibility of earlier connection).

The project is connected to the PSE transmission grid at 220 kV, and the distance from the connection point is merely approximately 450 meters, which constitutes one of its primary advantages.

Key Project Parameters

• Storage Power: 50 MW
• Storage Capacity: 199.73 MWh
• Operating Duration: 4 hours
• Project Status: Late-stage development
• Planned RTB: Q4 2026
• Planned Connection Date: 03.2029 (earlier date possible)
• Grid Operator: PSE (TSO)
• Connection Voltage: 220 kV
• Distance from Connection Point: approx. 450 m

Project Documentation and Status

The project includes:

• Secured Project Site
• Connection Conditions issued in February 2024
• Signed Connection Agreement (GCA)
• WZ/MPZP
• Building Permit – currently being obtained (Q4 2026)
• Connection Line Design – currently in progress (Q4 2026)

Connection Parameters

• Connection Conditions Issued: 14.02.2024
• Connection Agreement Signed: 16.10.2025
• Estimated Connection Cost (investor's share): 15 686 019 PLN
• Advance Payment for Connection Fee: 5 661 500 PLN

 Detailed project documentation available upon signing an NDA.