Here are some useful hints to help reduce energy bills at home:
https://www.seai.ie/sustainable-solutions/energy-saving-tips/
https://www.electricireland.ie/business/help/efficiency/how-to-reduce-your-energy-costs-and-save-on-your-electricity-or-gas-bill
https://www.epa.ie/media/epa_factsheet_energy_v2.pdf