Katoomba Electrified Cottage

Gundungurra and Darug country,
Katoomba,
NSW
This home will be open for in-person tours on the 17th May 2026

About this home

We have electrified our traditional mountains cottage while undertaking minor renovations. This has made our home more comfortable to live in, cheaper to run and reduced its carbon emissions.

Sustainability features we included:
– ceiling and underfloor insulation. We fortunately already had wall insulation installed.
– 9.7kW solar system
- 42kW battery system
– upgraded to 3 phase power to enable us to electrify our home and support faster EV charging at home
– induction cooktop
– multi-split reverse cycle air-conditioning system (mostly floor-based consoles)
– heat pump hot water system
– 7-star fridge
– LED lights
– low VOC paint
– respraying bath, kitchen splashback and old bathroom wall tiles rather than removing and replacing them

We’ve had our solar system for 2 years and it produced over 50% more electricity than we consumed last year.

We also buy 100% GreenPower renewable electricity to match our grid electricity usage.

We estimate we’re saving $2,000 a year in energy savings and a further $3,000 a year in fuel savings since we electrified our home and got an electric vehicle.

Q & A

What motivated you to build or retrofit sustainably?
Climate concerns, bills, comfort and health.
Our solar system has made the biggest difference and saves us around $1,500 per year. It also runs our air-conditioning that cools our house for free on hot summer days, cost effectively heats our house in the colder months and provides most of the electricity that powers our electric vehicle.
Replacing our weatherboard cladding and replacing our old sash windows with authentic looking and hopefully fire-resistant double-glazed sash windows.
Back to 2026 Homes
Type: Standalone house/townhouse
Project: Home retrofit
Size: 110 m2 approximatelym²
Bedrooms: 3
Bathrooms: 1

Sustainability Features

Building Materials & Envelope

Draught-proofing/air sealing
High-performance insulation
Recycled or reused materials

Heating, Cooling and Ventilation

Heat pump (reverse-cycle) heating/cooling

Energy and Appliances

Rooftop solar PV
Battery storage
Dedicated wall-mounted EV charging
Energy monitoring/smart home systems
Efficient lighting (LED, daylighting, solar skylights)
Heat pump hot water
Electric cooktop - induction/ceramic
Other energy-efficient appliances

Water & Waste Systems

Water-efficient fixtures
Other

Landscape & Biodiversity

Climate Resilience

Accessible & Flexible Design Features

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