GPZ Ełk Bis: information about the electrical substation
Last updated: 11 August 2026
GPZ Ełk Bis is an existing 400/110 kV electrical substation in the Ełk area, in north-eastern Poland (Warmian-Masurian Voivodeship). The station is part of the National Transmission Grid and is currently being expanded to enable the connection of further generation sources, including RES installations.
Technical data
- Station name: GPZ Ełk Bis (Nowa Wieś)
- Voltage: 400/110 kV
- Location: near Nowa Wieś, Ełk municipality, Warmian-Masurian Voivodeship
- Owner and investor for the expansion: Polskie Sieci Elektroenergetyczne S.A.
- Status: existing station, currently being expanded; siting decision for the expansion issued in October 2025, full set of construction permits obtained, contractor selection under way
- Investment context: starting point of the 220 kV Harmony Link line (Poland-Lithuania connection) and a connection hub for new RES sources in the region
Location
GPZ Ełk Bis
400/110 kV, Nowa Wieś, Ełk municipality
The station sits on the region's main transmission routes and is the point from which a new double-circuit 220 kV cable line will run towards the Lithuanian border, as part of the second Poland-Lithuania interconnection (Harmony Link).
Significance of GPZ Ełk Bis for the region and RES development
As a 400 kV station of the National Transmission Grid, GPZ Ełk Bis is one of the key grid nodes in north-eastern Poland. Expanding the station with an additional 400 kV bay and busbar is intended to strengthen regional supply and enable the connection of new energy partners, such as photovoltaic farms, energy storage facilities, and wind farms, including the Grajewo wind farm referenced in municipal planning documents.
Together with the new GPZ Wigry station (220/110 kV), GPZ Ełk Bis forms part of a broader PSE investment increasing the available connection capacity for RES projects in the Ełk and Suwałki region, one of the areas with the best wind conditions in Poland.
Project background and route
PSE and the Lithuanian operator Litgrid originally planned the Poland-Lithuania connection as a subsea cable together with DC converter stations. The tenders for this variant were cancelled in April 2023 due to a significant rise in the cost of the cable and converter stations. They were replaced by a land-based variant: a double-circuit 220 kV AC line running from the Ełk Bis station to a new Gižai station in Lithuania. A feasibility study confirming that the combined systems would perform equally well as with a subsea connection was completed in June 2024 by the Gdańsk branch of the Institute of Power Engineering.
The roughly 100 km, 220 kV cable line on the Polish side will run through the municipalities of Ełk, Kalinowo, Raczki, Suwałki (both the city and the surrounding municipality), and Szypliszki, mostly following the corridor of the S61 Via Baltica expressway. The investment also includes the modernisation of the existing roughly 100 km overhead 220 kV Ostrołęka-Ełk line and the construction of a new GPZ Norki station in the Kalinowo municipality. The project is co-financed with EU funds under the Connecting Europe Facility (CEF).
Entities applying for connection to GPZ Ełk Bis
Under Article 7(8l)(1) of the Energy Law, PSE S.A. publishes a register of entities applying for connection of sources to the National Transmission Grid. Below is a summary of the entries relating to the GPZ Ełk Bis connection point (as of 30 June 2026):
| No. | Injected capacity [MW] | Offtake capacity [MW] | Installation type | Applicant | Registered office | Connection conditions date | Connection agreement date | Connection deadline |
|---|---|---|---|---|---|---|---|---|
| 32 | 200 | 200 | MEE | not subject to disclosure | not subject to disclosure | 06.02.2020 | 01.02.2022 | 28.02.2030 |
| 66 | 60.2 | 0 | PV | Wiesław Mieczkowski | Niekrasy | 05.09.2022 | 05.09.2024 | 02.08.2029 |
| 72 | 59.18E | 59.18 | MEE | not subject to disclosure | not subject to disclosure | 31.10.2022 | 30.10.2024 | 30.06.2029 |
| 83 | 200.324 | 0 | PV | GF Biała Piska 1 | Warsaw | 17.04.2023 | 20.08.2024 | 19.07.2030 |
| 216 | 121.776 | 121.776 | MEE | not subject to disclosure | not subject to disclosure | 19.09.2024 | 15.04.2025 | 17.12.2029 |
| 250 | 200 | 200 | MEE | not subject to disclosure | not subject to disclosure | 22.11.2024 | n/a | n/a |
| 251 | 200 | 200 | MEE | not subject to disclosure | not subject to disclosure | 22.11.2024 | n/a | n/a |
| 291 | 91.82208 | 0 | PV | GF Koszki 1 Sp. z o.o. | Warsaw | 04.02.2025 | n/a | n/a |
| 302 | 185 | 100 | PV+MEE | VRS 3 Sp. z o.o. | Warsaw | 18.02.2025 | n/a | n/a |
| 304 | 199.335 | 52.5 | PV+MEE | Sun Energy Projekt Sp. z o.o. | Warsaw | 21.02.2025 | 28.04.2026 | 30.06.2030 |
| 355 | 107.997745 | 0 | PV | Projekt-Solartechnik S.A. | Gliwice | 16.04.2025 | n/a | n/a |
| 360 | 133.99936 | 0 | PV | Vortex Energy Solar Sp. z o.o. | Szczecin | 30.04.2025 | n/a | n/a |
| 514 | 54 | 314.08 | PV+MEE | Szamal Investment Sp. z o.o. | Poznań | 09.09.2025 | n/a | n/a |
| 519 | 250 | 10 | SD (FW) | not subject to disclosure | not subject to disclosure | 15.09.2025 | n/a | n/a |
| 533 | 59.1822E | 57.816 | PV+MEE | OX2 Green Sp. z o.o. | Warsaw | 22.09.2025 | n/a | n/a |
| 540 | 250 | 0 | SD (FW) | not subject to disclosure | not subject to disclosure | 24.09.2025 | n/a | n/a |
| 553 | 150 | 1 | SD (FW) | not subject to disclosure | not subject to disclosure | 06.10.2025 | n/a | n/a |
| 556 | 250 | 5.4 | SD (FW) | not subject to disclosure | not subject to disclosure | 07.10.2025 | n/a | n/a |
| 635 | 92.4 | 1.5 | SD (FW) | not subject to disclosure | not subject to disclosure | 22.12.2025 | n/a | n/a |
| 747 | 0 | 590 | ODB | not subject to disclosure | not subject to disclosure | 23.04.2026 | n/a | n/a |
Installation type abbreviations: FW, wind farm; PV, photovoltaic installation; MEE, electricity storage facility; PV+MEE, hybrid PV-with-storage installation; SD, connection to the distribution network (source type in brackets); ODB, offtaker. An entry marked "not subject to disclosure" means the applicant's details are not covered by the publication requirement under the Energy Law.
As part of the Ełk Wind Platform offer
We hold secured, transferable grid connection conditions for GPZ Ełk Bis with a capacity of 94 MW, fully transferable to the buyer's project. See package details →
Frequently asked questions
What is GPZ Ełk Bis?
GPZ Ełk Bis is an existing 400/110 kV electrical substation in the Ełk area, part of the National Transmission Grid, currently being expanded by Polskie Sieci Elektroenergetyczne S.A. as part of the Harmony Link project.
What does the expansion of the Ełk Bis station involve?
The expansion includes an additional 400 kV bay and busbar within the station's current site, intended to enable the connection of new energy partners such as photovoltaic farms, energy storage facilities, and wind farms. PSE has obtained a full set of construction permits, and the siting decision for the expansion was issued in October 2025.
What role does GPZ Ełk Bis play in the Harmony Link project?
The Ełk Bis station is the starting point of a new double-circuit 220 kV AC line running to the Gižai station in Lithuania, as part of the second Poland-Lithuania electrical interconnection.
How many entities are applying for connection to GPZ Ełk Bis?
According to the PSE S.A. register (as of 30 June 2026), twenty entries relate to the Ełk Bis connection point, covering photovoltaic installations, energy storage, wind farms, hybrid installations, and offtakers.
How does GPZ Ełk Bis differ from GPZ Wigry?
GPZ Ełk Bis is an existing 400/110 kV station that has operated for years and is now being expanded. GPZ Wigry is a new 220/110 kV station, for which only the siting decision has been issued, with construction planned from 2027. Both stations are part of the same broader PSE investment in the region.
Sources: inwestycje.pse.pl, Ełk Bis station with a siting decision for expansion, inwestycje.pse.pl, Poland-Lithuania Connection (Harmony Link), pse.pl, PSE and Litgrid to cooperate on Harmony Link as a land-based connection, gramwzielone.pl, PSE to build a cable line important for Poland and Lithuania, rynekinfrastruktury.pl, PSE closer to delivering Harmony Link, PSE S.A., Register of entities applying for connection of sources to the National Transmission Grid (as of 30 June 2026).