NatHERS (Nationwide House Energy Rating Scheme) is an Australian initiative that measures the energy efficiency of residential buildings. It provides a star rating (from 0 to 10) to indicate the thermal performance of a home, specifically how well it maintains a comfortable indoor temperature throughout the year with minimal energy use for heating and cooling.
What Does Whole-of-Home Assess?
In addition to the traditional NatHERS star rating for thermal performance, Whole-of-Home assessments evaluate the energy performance of: 1. Heating and Cooling Systems: • Includes air conditioning, heaters, and other mechanical systems. • Focuses on the efficiency and energy use of these systems. 2. Hot Water Systems: • Assesses the type of system (e.g., gas, electric, solar) and its energy performance. • Encourages the adoption of energy-efficient water heating options. 3. Lighting: • Evaluates the efficiency of indoor and outdoor lighting systems, including LED usage. 4. Renewable Energy Systems: • Accounts for on-site renewable energy sources like solar panels and energy storage systems (e.g., batteries). • Balances energy consumption with energy generation to provide a net energy assessment.
In addition to the traditional NatHERS star rating for thermal performance, Whole-of-Home assessments evaluate the energy performance of: 1. Heating and Cooling Systems: • Includes air conditioning, heaters, and other mechanical systems. • Focuses on the efficiency and energy use of these systems. 2. Hot Water Systems: • Assesses the type of system (e.g., gas, electric, solar) and its energy performance. • Encourages the adoption of energy-efficient water heating options. 3. Lighting: • Evaluates the efficiency of indoor and outdoor lighting systems, including LED usage. 4. Renewable Energy Systems: • Accounts for on-site renewable energy sources like solar panels and energy storage systems (e.g., batteries). • Balances energy consumption with energy generation to provide a net energy assessment.
7 Star Energy Rating
Ratings range from 0 stars (very inefficient, high energy use) to 10 stars (extremely efficient, minimal energy use required for comfort).
• Most Australian homes aim for a minimum of 7 stars, as required under the National Construction Code (NCC)
Thermal Performance
• Assesses a home’s ability to reduce the need for artificial heating and cooling.
• Considers factors like insulation, window glazing, orientation, shading, and ventilation.
Software-Based Modelling
Accredited software tools (e.g., AccuRate, BERS Pro, HERO) simulate the thermal performance of a home based on design inputs like floor plans, materials, and climate data.
Climate Adaptability
• Takes into account Australia’s diverse climates by providing region-specific assessments.
• Encourages designs tailored to local environmental conditions.
BASIX (Building Sustainability Index) is an online assessment tool and sustainability program in New South Wales (NSW), Australia, designed to ensure new residential developments meet energy, water, and thermal comfort standards. Administered by the NSW Department of Planning and Environment, BASIX is a critical part of the development approval process for all new homes and renovations over $50,000 in NSW.
BASIX aims to reduce greenhouse gas emissions and water consumption in NSW by integrating sustainable design principles into residential construction. The program focuses on creating homes that are more energy- and water-efficient while ensuring they are comfortable to live in.
1. Environmental: • Reduces residential water consumption and greenhouse gas emissions. • Supports the transition to renewable energy sources. 2. Economic: • Decreases utility bills by promoting energy- and water-efficient systems. • Enhances the value of homes through sustainable design. 3. Comfort and Livability: • Encourages passive design, leading to improved indoor comfort year-round. 4. Compliance and Future Proofing: • Ensures new homes and major renovations comply with sustainability standards. • Aligns with broader goals to mitigate climate change impacts.
Water Efficiency
Encourages the use of water-saving measures like rainwater tanks, low-flow taps, and efficient irrigation systems.
Thermal Comfort
Assesses passive design features, such as orientation, insulation, and glazing, to reduce the need for heating and cooling.
Energy Efficiency
Promotes energy-efficient appliances, renewable energy sources like solar panels, and efficient thermal design.
Certificate
This certificate must be submitted with the Development Application (DA) or Complying Development Certificate (CDC)..