Colm O'Regan: We got solar panels — our first bill was down €100, and we earned €20 

Because sustainability is so often tied up with ‘the right thing to do’ that we forget that some ‘sustainable’ stuff is only accessible with cash

Colm O'Regan: "I have an app that tells me how much the solar panels are generating. So you best believe I’m obsessively checking it." Picture: iStock

We got ‘the solar’. 

Right, first things first: after all the grant-y stuff, it will cost six grand, just so you know.