As the days and nights become warmer, less mechanical heating is required to assist passive solar heating (plus insulation) to maintain a comfortable temperature indoors. Increased solar power exports and decreased grid imports reduced the energy bill to 50c per day.
Committing to electric vehicle only driving was a positive experience. The cars have more than enough range to meet our urban needs, with the MG ZS EV enabling longer distance travel. In summer, trickle charging the EVs with excess solar power minimised the running costs.
A few cold, but sunny, days allowed our home to show off what it can do with sunlight. Light streaming through the large north facing windows quickly warmed the house in daytime. Solar panels produced more than enough electricity to supply our all-electric home's needs.
Experience gained from building our first home helped to make some modifications to the cladding specifications for the second one. For example, we replaced Shadowclad with more Klip Lok steel cladding.
Learning how to help the passive solar design features keep us warm in Winter is a useful exercise. Sunlight is all we need on clear, cold days. When it's cloudy, we use the heat pump to stop the concrete slab thermal mass cooling too much.