a district heating installation to the extent that it delivers heating to household customers, small or medium-sized enterprises, or essential social services, provided that such installation is not able to switch to other fuels than gas;
suiteáil téimh ceantair sa mhéid go soláthraíonn sé téamh do chustaiméirí teaghlaigh, do ghnóthais bheaga nó mheánmhéide, nó do sheirbhísí sóisialta riachtanacha, ar choinníoll nach bhfuil suiteáil den sórt sin in ann athrú go breoslaí eile seachas gás;