Energy Efficient Design

St Kilda Cambridge will be one of New Zealand’s largest energy efficient and sustainable developments using smart design. St Kilda homes will be fully connected to all services – sewerage, water, electricity and ultra fast broadband. The homes will be attached to the modern-living “grid”, but smart design and energy-saving features will mean the cost of running the household will be less than similar homes, which will add value as well as saving money.

Every home at St Kilda will not only be stunning to look at, but extremely comfortable to live in, all year round.  Being energy efficient means that these homes will also cost significantly less to run than non-sustainably built homes.
Warm and cosy in winter and cool and breezy in summer, sustainably built homes are supremely comfortable and very cost effective, freeing owners from increasingly expensive energy bills.  They will also hold their value much more than homes that are expensive to run.  In countries such as the UK and Germany, it is compulsory for the energy rating of all homes built after a certain date to be provided, to give buyers an indication of a home’s operational costs and therefore it’s comfort levels.  This is also predicted to become compulsory in New Zealand in future.
Cross Flow Ventilation – this shows how design plays a crucial role in ensuring the transfer of warm air in winter and cool air in summer.
North Orientation – this shows the importance of orienting your main living areas to North to maximise natural light and warmth for as much of the day as possible.

Design Guidelines

St Kilda will encourage through our design guidelines the following features:
- Compulsory use of solar electricity systems
- Compulsory double glazing
- Rain water harvesting
- Energy efficient and low water usage appliances
- Concrete heat sinks to harness sunlight for passive heating
- Greater levels of floor, wall and ceiling insulation
- Fibre Optic telecommunications and media to every home

The vision of St Kilda is to be an electricity efficient subdivision, generating enough energy to cover all usage. Each home can be connected to the national grid, feeding electricity generated directly into a sub-station adjacent to the property. Excess energy can then be sold back to other downstream parties.
Heat Sink – the use of concrete as a ‘heat sink’, trapping warmth from the sun during the day, to be released as heat overnight when required.
Solar Control – indicating how design features such as louvres can deflect unwanted heat in summer, with a stone heat sink which is the front of a concealed water storage tank.

Solar Electricity - using a north facing roof to capture sunlight to generate solar electricity will reduce your annual power bill by up to 55-100% (depending on the system size).