Thornleigh Passive House

As of February the solar is finally installed and working as it should have been back in August. It was a major drama to get the solar panels installed due to the SIP roofing. Apparently most solar installs involve driving bolts through the roof into the building frame... But we don't have a building frame, the SIP is our air tight layer, not to mention we don't want a bunch of thermal bridges. It took contracts with two different companies (not being a standard install was too much for most companies contacted about the installation), and eventually it took two install attempts by the second company when the first bracket they tried did not fit as required. The very big tree that shades our roof made it a bit hard to predict the generation capacity, but our 5.22kW system is generating power that would be expected from an unshaded ~ 4kW system (~ 17kWh / day). Which more than offsets our typical consumption ~ 7kWh / day. Once we have enough data I'll post a more detailed

Another month of house data... Averaged hourly outdoor temperature ranged from 15 to 46 °C. Averaged hourly indoor temperature ranged from 19 to 30 °C. We used the A/C a fair bit this month, mainly when night time temperatures didn't drop or when the day time temperatures climbed into the mid-40's. I have a temperature sensor which is deployed so that I can identify the hours during which the A/C is on...but I have not yet written that R script (something else on my extensive to do list). The default setting for the AC is 23 °C. The summary data for sensors nearest the A/C indicate those areas were above the 25 °C only 18% of the hours of the month where the other sensors were over 25 °C 36% of the hours. That suggests that we ran the A/C about half of the hot days. We had some really hot day this month, and some exceptionally hot nights too. Inside / Outside % < 20 °C % 20 - 25 °C % > 25 °C Inside 0 66 34 Outside 24 42 32 Methods: I have taken the 5 minutel