The new farms will have a combined capacity of 18-megawatt peak, which could power over 4,000 homes.
In Galway, the solar farms will be constructed in Rooaun and Ardnadoman, while a third is to be built at Dromsallagh in Limerick.
Astatine, along with TLI Group, will start construction in January, with all three farms expected to be commissioned later in the year.
They’re part of six projects awarded last year under a Government scheme that aims to support large scale renewable energy in Ireland.
