Construction at the site in Ballinrea is due to begin in 2024 and is expected to be complete by the following year.
The group employs 90 people at it's Irish headquarters on Lapp's Quay in the city.
Ørsted were named the world's most sustainable energy company last year in Corporate Knights' index of the the global 100 most sustainable corporations in the world.
Kieran White, Vice President, Ørsted Europe Onshore said:
“For Ireland to ensure energy resilience and deliver its 2030 energy targets, it is essential that multiple technologies are delivered in tandem, from solar and onshore wind to offshore wind and storage. This is a key priority for Ørsted, both in Ireland and overseas. Projects such as Ballinrea pave the way, but significant investment in our electricity grid is required to match the ambition of Government targets, continue the push to net zero and ensure energy security long-term. The Ballinrea Solar Farm will make a meaningful contribution to Ireland’s national energy target of 80% renewables by 2030 as well as to the Government’s new 5.5GW solar target. It will also enhance the climate neutrality of the region by generating power for 16,000 homes, which is also the number of new homes planned to be built in the city between now and 2028.”