• Gabriel O’Brien Crane Hire Ltd.
  • Gaeltec Utilities
  • Galetech Group
  • Gas Networks Ireland
  • Gavin & Doherty Geosolutions
  • Ge Energy Ireland Ltd
  • Geoscience Ireland
  • Gineadoir Gaoithe Teo
  • Global Port Services (Scotland Ltd) – Sub division Global Wi
  • Goodbody
  • GP JOULE IRELAND Limited
  • Green Rebel Marine Ltd
  • Greencoat Renewables
  • Greencoat Renewables plc
  • Greensource
  • GreenTechHQ
  • Gruig Wind Farm Limited