If you’re starting a new project, the first step is to set energy objectives for your home.
How does it
address energy objectives?
Focuses on the bare minimums to ensure occupants’ health.
Addresses energy efficiency in clause H1.
Dictates minimum R-values to be used and glazing percentages to reduce
Performance targets are not set for residential buildings within the
Living Building Challenge
to create a future in which the built environment relies solely on renewable
need to achieve net zero energy without the use of on-site combustion, in
addition to meeting all the other requirements of the standard.
annual basis, the building has to produce 105% of its energy needs from
renewable energy sources.
Focuses on one objective: achieving zero energy, which means that the
amount of energy consumed by the building will be less than – or equal to –
the amount of energy generated on site.
Forbids the use of on-site combustion, which means a home seeking this
certification cannot use gas.
On an annual basis, the building has to produce 105% of its energy
needs from renewable energy sources.
energy objectives in terms of reduced energy use and occupants’ thermal
‘Energy, Health and Comfort’ category accounts for almost half of the points
in the Homestar tool.
on improvements of the thermal envelope and on the selection of efficient
systems and appliances to minimise energy consumption and CO2
In the Homestar Technical Manual v.3, a summary table is provided to
illustrate the various energy benchmarks (kWh/annum/m²) that have to be
achieved in order to be awarded a certain number of points.
Certified Passive Houses offer comfortable and healthy indoor
environments with minimal energy consumption. Limits on heating and cooling
energy, as well as primary energy, and a stringent quality assurance process
safeguard the performance of the building fabric and fresh air system. Post-occupancy
evaluation of Certified Passive Houses regularly confirms that these objectives
are achieved in practice.
Consumption maximum of 15kWh per square meter a year for heating and
cooling. A cap on all sources of primary energy used in the home of 120 kWh
per square meter a year.
High Standard of Sustainability (HSS)
an energy benchmark for existing and new homes. This target is a starting
point based on best available national information and it is expected to be
revised over time.
homes in Auckland
should use no more than 5,800kWh of reticulated energy per year while
existing houses should aim for no more than 6,200kWh of reticulated energy
per year, regardless of their size.