Litgrid
TSO - Lithuania
Publication info
| Status of publication | Published |
| Link to website | https://experience.arcgis.com/experience/1aa8fb2983c34b7bbc4343d22d9071a5 |
| Accessibility | Open |
| Regional Scope | Country (Lithuania) |
| Spatial granularity | Nodal (substation) |
| Operator voltage level scope | Connection is available to 110 kV and 330 kV. 300 kV DC, 400kV and in the future 220 kV lines are represented but connecting to them is not allowed. Only the transmission grid is shown |
| Timeline for which HC is provided | Y+10 is provided. When calculating how grid expansion and reinforcements effect capacities only the projects with signed construction works agreements are considered. Projects that are in the planning phases are portrayed on the map but connection to them is not yet allowed and they do not impact available capacities. |
| Information format | Map |
| Categories of grid users considered | Generation and storage |
| Type of grid connection capacity information | Available, reserved, temporarily reserved and connected |
| Availability of API | Openly available |
| Update Cycles | When needed |
| Available language | National language(s) + others including English |
Hosting capacity assessment
| Capacity type considered for hosting capacity information | Flexible |
| Description of what firm capacity means and the aspects that structure the definition | Firm contract means that the grid operator cannot limit consumers' power, except for incidents that pose a blackout risk. |
| Description of the methodology that leads to firm capacity results | Firm capacity is offered to energy consumers only. A "firm contract" means that the grid operator cannot limit consumers' power, except for incidents that pose a blackout risk. |
| Description of what flexible capacity means and the aspects that structure the definition | Flexible capacity means that the TSO can curtail the generation of assets if they cause overcurrent in the grid. There is a set priority list of which capacities get curtailed first - BESS get curtailed before generation. Only those assets that contribute most to the overcurrent get curtailed. |
| Description of the methodology that leads to flexible capacity results | Grid capacity is allocated to solar, wind, and BESS seperately and independantelly, meaning that in theory, 3x grid capacity could be connected to the grid. For example, 70 MW of solar, 70 MW of wind, and 70 MW of BESS can be connected to a 70 MW line. Solar and wind generation are calculated as non-competing. During periods where both solar and wind generate simultaneously, all generation is curtailed according to by a set step. BESS are not allowed to generate during peak generation and are curtailed if that occurs (unless it is due to participation in balancing markets). |
| Description for the criteria and methodologies used that lead to the published information | Static calculations of systems after a fault. Grid reservations for generation and storage are given quarterly, so they impact the calculations after these quarterly auctions. Grid reservations for demand are made after grid connection conditions are given (1 month after first asking the TSO). After each quarterly reservation cycle, the TSO and DSO together decide how much of the TSO’s grid should be reserved for the DSO’s upstream power flow. These reservations are made for solar, wind, and BESS separately. |
| Main assumptions/disclaimers behind calculations | Solar and wind power plants are calculated as non-competing due to different generation profiles. |
Additional information for connection request and hosting capacity information
| Connection request procedure | Connection process is detailed on our website: (https://www.litgrid.eu/index.php/aei-centras/vystytojams/saules-elektriniu-vystytojams/32333) |
| Options available for the investors if the map shows 'no capacity available' in their interested area | If there is no capacity available in an area, an investor can still inquire for about preliminary connection conditions, and the TSO will provides either a document with the required reconstructions/grid expansion or the preliminary connection conditions with the required grid expansion/reconstruction details. |
| Connection request rules | Grid reservations are given out in an auction system. Reservations are first given to projects with higher priority score and if that is equal then the earlier request gets the reservation. Priority is higher for a solar/wind/BESS system that is colocated than ones that are stand-alone. Our priority system incentivises BESS since they are underdeveloped at the moment |
| Information published for volumes of connection requests/waiting lines | Yes |
| Granularity of published connection requests/waiting lines | Every seperate grid reservation is published. |
Relevant references/Links/Additional material
Calculation method, disclaimers, and boundaries
Not public
Connection request process
Legal references
Contact point for hosting capacity information
Contact point for connection requests