This is what you get when one of Ireland’s most experienced low energy builders creates a home for his own family, with help from one of the country’s foremost ecological architects — a modern and elegant passive house that pays detailed attention to sustainability at every turn.

In the summer of 2015, Cheryl Hitchcock and Dudley Thompson moved from an energy-hogging Victorian home into a new timber frame passive house in Cumbria’s Eden Valley. Below, they give a frank account of what their first year and a half in their new home has been like — and reveal how shockingly low their energy bills are.

The default answer when you want to do pretty much anything to a listed building is ‘no’. The default assumption if you want to achieve the Enerphit standard for retrofit is ‘tackle everything’. So how on earth do you retrofit a listed building to within a whisker of the Enerphit standard — with the blessing of the conservation officer?

A brand new passive-certified nursery at the University of Aberdeen provides the children of staff and students with a bright, warm and healthy space for learning and playing.

Mixing modern standards of super-insulation with vernacular farmhouse architecture led to the creation of a very special home for proprietors Jeanette and Jon Fenwick — one that picked up a coveted UK Passivhaus Award in 2016.

Lenny Antonelli speaks to architect Fran Bradshaw of Anne Thorne Architects, who designed and built a straw-bale home for herself in Hickling, Norfolk two years ago — and aimed to meet the passive house standard while doing so, with only a single infrared electric panel as the building’s sole active heat source.