I’ve noted your other topic and enquiry re choosing appliances for Solar passive houses is related.
It would seem likely that your solar passive house designer might have the skills required, or have a positive relationship with another consultant who can?
Our Qld building certifier had to provide an energy efficiency audit for a recent planning application. That may also be an avenue of enquiry in your state, based on who is available locally, and their business expertise?
If you wish to tackle this yourself, it might be useful to begin with a list of your goals or expected outcomes.
It may also be useful to list your major energy consumption items and consider these first. For inside your solar passive house @PhilT and @gordon have already provided some great feedback at the other topic.
For a typical home the biggest daily energy users are likely:
- Heating and cooling, (possibly not a need for your house)
- Hot water,
- Pool,
- Cooking (cook top, oven),
- Fridge/s
The balance of the loads that are less significant in total consumption include dishwashers, washing machines and driers, TV - entertainment systems, lighting and misc electrical. Choice has lots of great information and advice on all these and also cooking and fridges.
And optionally you might need to also provide for:
- The backyard shed,
- House hold water pump and treatment if on tank water,
- Sewage Treatment Plant if not on services,
- Bore pump if rural.
There are lots of choices to make. And often more than one energy option.
Eg
If you go all electric per @gordon other post, are you also going off grid? If you go off grid and all electric you might choose a heat pump style hotwater system. Alternately you could choose an evacuated tube solar HW system with 200l storage tank with gas backup for low solar days?
Even the pool has choices that impact energy use and cost. A quality retractable thermal pool blanket may be a good call. Reduced cleaning, less water loss, less chemical dosing, less heat loss?
It might be beneficial to your planning to gain some insight and knowledge by talking with reputable local pool suppliers about your goals. They will suggest products and options. They should be able to provide budget costs and enough information to help with the decision making process. If you have concerns about a particular product or supplier, there is always Choice and the Community.
The same approach might be useful for the other key decisions with the final design of the property?
