After our successful off grid country house project over the last 5 years, our eventual city "retirement home" is next.
The ideal wishlist is long and extensive starting with a energy efficient rebuild of a single level, single fronted inner city, turn of the last century brick house! Town planning has already consumed almost 12 months and tested our patience (and wallet)! However, in this give and take game we are now advancing to the nitty gritty of what the architect calls the fun bit of the two level extension. I hear you think 2 levels and retirement home contradict! We do too, which is why we install a lift! Knowing what old folks home charge the payback will be short if it keeps us home longer
So, extensive insulation, double glazing, PV (which must be invisible from the street) and air tightness of the build are givens, as are the most energy efficient white goods and lighting and odorvac to toilets. We hope to have a all electric house, disconnecting gas if they let us.
We are investigating the use of ground sourced heat pump for hydronic heating and cooling and hybrid battery storage if it is economically possible. Looks like hot water will be a Sanden heatpump so super efficient and noiseless used on our off grid house. Off street parking would let us charge a future plug in car by solar energy not wanting to feed any back to the grid!
Does anyone have any feedback on micro inverters Enphase? With the restrictions of panels needing to be invisible, due to heritage overlay, some will face west at around 10 degees some east and some north and my conclusion would be having individual panels controlled by micro inverters could do the trick. I have no idea if future hybrid battery incorporation is possible as it appears to convert to AC power at the individual PV panel.
Any thought and feedback would be greatly appreciated