Capital Project 1023

Capital Project 1023 is a proposed electricity development that will help the transfer of power in county Donegal.

 

Capital Project 1023 is a proposed electricity development that will help the transfer of power in county Donegal. In particular, it deals with the capacity of the busbar in the existing Letterkenny station.

Simply put, a busbar is common connection point for several power lines. Today, the export capacity from renewable generation connected to the grid in Donegal is limited due to the existing capacity of the Letterkenny busbar. The problem will get progressively worse over time as more renewable generation, or other generation, connects to the electricity system in Donegal.

Why is this project needed?

Increasing the capacity of the busbar will help to accommodate the increase in renewable generation connected in the county. A large number of wind farms are already connected in Donegal, with more planning to connect. The power from these generators needs to be transported all over the country.

Increasing the capacity of the busbar is also important in the event of an unexpected loss of one of the 110 kV circuits in south Donegal. If this were to happen, the power flow on the impacted 110 kV circuit would be directed through the busbar in Letterkenny station, causing the capacity of the busbar to be exceeded. This would affect power flows out of Donegal to the rest of the country.

Given both these issues, the need for a solution has become more pressing.