Guardian: I meet Rebecca Golding window shopping amidst an array of solar panels and a display of drains at the Ecobuild 2013 exhibition in London. She looks bewildered, like a tourist lost in a foreign city, scared she might get ripped off, trying to interpret the green babble being spoken around her.
She is looking for triple-glazed windows which she wanted for the ultra-low energy house she is building with partner Jim on a plot near Newport, south Wales. But he has been diverted by some thermal imagery...