Check available capacity

Every number on the map comes from a grid operator's publication required by Article 7(8l) of the Energy Law. Below is the list date for each operator, its type, and a link to the operator's publication. The substation list and map do not repeat these dates, as every substation comes from these lists.

We read dates and links from the same data file used to draw the map, so they change together with the data. Each operator updates its list on a different schedule, at least quarterly, which is why dates differ. For each date, we explain what it means: "as at" is the day the list is valid, "published" is the day the list was published, "file date" is the date in the operator's file name, "end of the period" is the last day of the period the list covers, and "retrieved" is the day we retrieved the list without a specific date. If we have not determined the date type, we note this next to it, and if there is no date in the data, you will see "according to the operator's publication" in the column. Binding data must be confirmed by the relevant DSO/TSO.

The summaries under the map use separate datasets:

• Connection queue: lists of entities applying for grid connection, published by operators. The oldest operator list in this layer is dated 31 August 2026; newer publications are loaded as they become available. The date type is stated for each operator.
• Grid connection refusals: report on the activities of the President of URE.
• Distribution system operators: open register of operators of the President of URE (api.ure.gov.pl).
• RES generation curtailment: PSE data on non-market RES redispatch (api.raporty.pse.pl).

Data status and source by operator

1. Nature of the data. The values presented are approximate available connection capacity and application queues at individual substations/primary substations (GPZ) and in counties, published by operators (PSE, PGE Dystrybucja, TAURON Dystrybucja, Energa-Operator, Stoen Operator, Enea Operator) under the statutory obligation in Article 7(8l) of the Energy Law. Grid conditions are dynamic and change continuously; operators update the data at least quarterly.
2. Verification and the unit represented by a row. Verify availability for your project using the application queue at the specific substation; publication methodologies differ between operators. A row may represent a single substation, a group of substations or a group of nodes, as defined in the operator's list.
3. No binding effect. The information does not provide grounds to demand connection conditions for a chosen location or confirmation that connection is possible. The only binding confirmation is obtaining connection conditions from the relevant operator after submitting an application in accordance with its procedure.
4. Basis for re-use. The aggregation constitutes re-use of public-sector information published under a statutory obligation (Article 7(8l) of the Energy Law), in accordance with the Act of 11 August 2021 on open data and re-use of public-sector information. TransakcjeOZE.pl / EFET Foundation presents its own independent compilation of facts (capacity and application values) from multiple sources, identifying the operator; it does not reproduce operators' databases or graphics. The statutory publication obligation precludes the effectiveness of unilateral reservations restricting access to this information.
5. Source and attribution. Data come from operators' websites (lists under Article 7(8l) of the Energy Law). Each entry identifies the operator and as-of date. Binding data are held by the relevant DSO/TSO.
6. Disclaimer of liability. Neither EFET Foundation (website operator) nor HWW Hewelt Wojnowski Lindner i Wspólnicy sp.k. (legal adviser) is liable to third parties for damage arising directly or indirectly from use of this information, in particular when planning a facility's location, performing calculations or making investment decisions. Use of the tool is at your own risk.
7. Location and nearby application pressure are approximate. Some substation coordinates are approximate (geocoded); ‘net headroom’ (available capacity minus the queue within a radius) is a pressure indicator, not a one-to-one balance. Queue coverage is incomplete for some operators and is being supplemented.

We show capacity reported in operators' publications: a snapshot as of the publication date, reduced by issued connection conditions. It indicates where to start checking; details and differences between publication methodologies are described in About the data.