Home Electrification

In Brief

What Is Home Electrification?

Knowledge Navigation

Explore the Home Electrification Knowledge Hub

Use this guide to explore how electric household systems, building fabric, existing home upgrades, solar, batteries and residential energy ratings work together.

Residential Performance

Home Electrification and All Electric Homes

Planning an all-electric home involves more than choosing electric appliances. Heating, cooling, hot water, cooking and electricity supply need to be considered alongside the building's design and expected energy demand.

For new Australian homes, electrification decisions can be coordinated early with insulation, glazing, shading, rooftop solar and residential energy assessments. For existing homes, the transition may involve replacing gas equipment progressively, reviewing electrical capacity and considering how building improvements affect heating and cooling needs. The appropriate approach depends on the dwelling, its existing systems and the stage of the project.

Foundations

What Home Electrification Means in Practice

Home electrification replaces household systems that rely on gas or other on-site fossil fuels with efficient electric alternatives. In practice, the transition also requires decisions about equipment, electrical infrastructure and how different systems work within the dwelling.

Common changes include replacing gas heating with reverse-cycle air conditioning, installing heat pump hot water systems and choosing induction cooking. Depending on the project, electrification may also involve rooftop solar, battery storage, electric vehicle charging or changes to household energy management. These technologies serve different purposes and do not all need to be installed at the same time.

An all-electric home uses electricity rather than gas or other on-site fossil fuels for its normal household functions. In new homes, electrical infrastructure, equipment locations and energy systems can be coordinated during design. In existing homes, electrification is often staged around renovations or the replacement of ageing equipment.

Practical planning may involve reviewing electrical supply and switchboard capacity, available space for hot water and heating equipment, installation requirements and the interaction between new appliances and existing building conditions. Some changes may require advice or installation work from appropriately licensed trades. The scope depends on the dwelling and the systems being replaced.

Electrification should also be considered alongside building performance. Insulation, glazing, shading and draught control influence heating and cooling demand, while efficient electric equipment determines how that demand is met. Solar generation and battery storage may further influence electricity supply, consumption patterns and operating costs.

Home electrification changes the household energy system. Good project planning helps ensure that the selected technologies suit the dwelling and work together effectively.

Australian Context

Why Australian Homes Are Moving Toward Electrification

Electrification is becoming an increasingly relevant part of Australian residential design and renovation as efficient electric technologies, rooftop solar, energy performance standards and household expectations evolve.

Many Australian homes use a combination of electricity and gas for heating, hot water and cooking. This is changing as efficient electric alternatives become more widely available, rooftop solar provides opportunities for onsite electricity generation and households reconsider how their energy systems are designed and operated.

Reverse-cycle air conditioning can provide both heating and cooling, while heat pump hot water systems can use substantially less electricity than conventional electric resistance water heaters under suitable operating conditions. Induction cooking offers an electric alternative to gas, and rooftop solar and batteries can help manage electricity supply and consumption. Actual performance and operating costs depend on system selection, installation, climate, tariffs and household use.

For new homes, electrification can be considered during design, allowing electrical capacity, appliance selection, rooftop solar, hot water, electric vehicle charging and building fabric to be coordinated early. These decisions can support a more coherent NatHERS Whole of Home performance approach, although energy performance assessment requirements and restrictions on new gas connections are separate matters that vary by jurisdiction.

For existing homes, electrification is often a gradual process. Equipment reaching the end of its service life, planned renovations, changing energy costs and persistent comfort concerns can create opportunities to review existing systems. Considering replacement options before equipment fails can allow more time to assess electrical infrastructure, installation requirements and suitable alternatives.

The movement toward electrification is therefore not driven by one technology or a single national regulation. It reflects a combination of improving electric technologies, changing household priorities, evolving energy policy and opportunities to coordinate building performance with the systems that provide everyday household services.

The Broader Shift

Australian homes are increasingly considering energy supply, household equipment and building performance together rather than as separate decisions.

Whole Home Context

How Electrification Connects With Whole Home Performance

The performance of an all-electric home depends on the interaction between the building fabric, household appliances, onsite energy systems and the way occupants use energy over time.

Electrification changes the systems a home relies on for heating, cooling, hot water and cooking. The energy performance of those systems depends on more than appliance efficiency alone. Building fabric, solar generation, battery storage, occupancy patterns and household energy use all influence the overall outcome.

A home may have efficient electric appliances but still require substantial heating and cooling energy if the building envelope allows excessive heat loss in winter or heat gain in summer. Conversely, a thermally efficient home may still use more energy than necessary if its household systems are inefficient, poorly selected or not suited to the dwelling.

For new homes, the NatHERS Whole of Home framework provides a defined method for assessing modelled household energy performance alongside the thermal star rating. It considers specified appliance energy use, solar generation and battery storage under standardised assumptions. Electrification can influence these results, but choosing electric systems does not replace the need for appropriate building fabric design or compliance assessment.

For existing homes, the same broader performance principles can guide practical decisions, although the assessment methods and project requirements may differ. Fabric improvements can help manage heating and cooling demand, efficient electric systems can meet household needs and solar or batteries may influence how electricity is supplied and used.

Electrification changes the household systems. Whole home performance considers how those systems interact with the dwelling and its energy supply.

Explore the formal assessment framework in the NatHERS Whole of Home Knowledge Hub.

Existing Homes

Existing Homes Can Move Toward Electrification in Practical Stages

Most homes do not need to replace every appliance or energy system at once. A staged pathway can align building improvements, appliance replacement, electrical infrastructure and household priorities over time.

Existing homes begin from very different conditions. Some already have rooftop solar and efficient electric heating and cooling, while others may rely on gas hot water, unflued heating, limited insulation or older electrical infrastructure. The most suitable pathway depends on the dwelling, climate, current systems, household use patterns and timing of planned works.

Appliance failure often creates a practical transition point. When a gas hot water system, heater or cooktop reaches the end of its useful life, the replacement decision may shape household energy use for many years. Planning before failure provides more time to compare options, arrange an electrical capacity review where needed and coordinate related upgrades.

Building improvements may also be appropriate before, or alongside, appliance replacement. Insulation, draught sealing, shading, window treatments and zoning can help manage heating and cooling demand, improve comfort and inform suitable system sizing. Appropriate ventilation should also be considered to support indoor air quality.

The following stages are planning considerations rather than a mandatory sequence. The aim is to understand the home well enough that each investment supports future decisions, gradually moving the dwelling toward a more coordinated all-electric energy system.

The best first upgrade is not always an appliance.

A NatHERS Existing Homes assessment can provide insight into modelled energy performance and potential improvement opportunities before major electrification decisions are made. Electrical and building condition inspections remain separate where required.

Household Energy Systems

Heating, Cooling, Hot Water and Cooking Form the Core of the Electrification Pathway

Heating, cooling, hot water and cooking are key household systems in the transition away from gas. Their efficiency, installation requirements and interaction with the building fabric influence the overall performance of an all-electric home.

In many Australian homes, space heating, hot water and cooking are among the household functions still supplied by gas. Electrification replaces these functions with electric alternatives, but the performance outcome depends on more than the fuel source. System sizing, appliance efficiency, climate, household use and the thermal condition of the dwelling all influence energy demand and operating costs.

Reverse-cycle air conditioning can provide both heating and cooling through heat pump technology. Heat pump hot water systems can use less electricity than conventional electric resistance water heaters under suitable operating conditions. Induction cooking provides a responsive electric alternative to gas, while appropriate kitchen ventilation remains important regardless of the cooking technology.

These technologies should not be selected in isolation. Heating and cooling equipment sized before significant fabric improvements may no longer match the home's future requirements. Hot water performance can vary with household demand, installation location, climate and operating schedules, including opportunities to use electricity generated by rooftop solar.

A coordinated approach considers the systems alongside the dwelling itself. Electrical infrastructure, equipment location, comfort, appliance replacement, rooftop solar, tariffs and future household loads can then be reviewed at appropriate stages of the project.

Efficient appliances cannot fully compensate for a poorly performing building envelope.

Heating, cooling and hot water decisions should be coordinated with insulation, glazing, shading, draught control and the broader whole home energy strategy.

Solar, Storage and Energy Use

Solar and Batteries Can Support Electrification, but They Do Not Replace Whole Home Performance

Rooftop solar, battery storage and household usage patterns influence when electricity is generated, stored and consumed across an all-electric home.

Electrification moves heating, cooling, hot water and cooking away from gas or other on-site fossil fuels and onto the household electrical system. This may increase electricity consumption while reducing the use of other fuels and, depending on system efficiency, total purchased energy. It also creates opportunities to coordinate major electrical loads with rooftop solar generation and suitable electricity tariffs.

Solar can support electrification by supplying electricity to appliances operating during daylight hours. Heat pump hot water, heating and cooling, pool pumps, household appliances and electric vehicle charging may be scheduled or managed to make greater use of available solar generation where practical.

Batteries can store excess solar energy for use later in the day and may increase household solar self-consumption. Some systems can also provide backup electricity during grid outages, but only where suitable backup equipment and system configuration are installed. Financial value depends on solar generation, household demand, electricity tariffs, battery capacity, installation costs and operating strategy.

Neither solar nor batteries should be treated as a substitute for managing avoidable energy demand. A home with inadequate insulation, excessive air leakage or poor summer shading may still require substantial heating and cooling energy, even when part of that demand is supplied by onsite generation.

Planning Priorities

Manage energy demand, select efficient electric systems and coordinate generation and storage around the way the home operates. These considerations can be addressed in different orders depending on the project.

An all-electric home does not automatically require a battery.

The appropriate combination of solar, storage and load management depends on the home, household energy needs and project objectives. For new homes, these systems may also be considered within the NatHERS Whole of Home assessment framework.

Building Performance

Electrification Does Not Remove the Need for Strong Building Fabric

Insulation, glazing, shading and air leakage influence heating and cooling demand. Understanding these characteristics helps project teams select electric systems suited to the dwelling.

An all-electric home can still be uncomfortable or require substantial heating and cooling energy if its building envelope performs poorly. Heat loss during winter, unwanted summer heat gain, uncontrolled air leakage and unsuitable glazing can increase the demand placed on electric heating and cooling systems.

Building fabric influences the thermal loads that these systems must manage. Insulation limits heat transfer through ceilings, walls and floors. Glazing and window orientation affect heat loss and solar gain, while appropriate shading helps manage overheating. Draught control reduces uncontrolled air movement, and ventilation must be considered separately to maintain indoor air quality and manage moisture.

These characteristics also affect equipment selection. Where insulation, glazing or shading improvements are planned, the future heating and cooling loads should be considered before finalising system capacity. This can help avoid unnecessary oversizing, support appropriate zoning and improve comfort and operational efficiency.

For new homes, building fabric and electrical system decisions can be coordinated during design. For existing homes, improvements may occur before, during or after appliance replacement. The important consideration is that equipment choices reflect the dwelling's current condition and any reasonably planned upgrades.

Performance Principle

Understand and manage the home's heating and cooling demand, then select efficient electric systems that suit its current or planned thermal performance.

Building fabric connects electrification decisions with thermal performance.

Explore how the residential building envelope is assessed through NatHERS, or how the modelled energy performance of an existing dwelling can be examined through a NatHERS Existing Homes assessment.

Two Different Levers

Electrification and Energy Efficiency Are Connected, but They Are Not the Same

Electrification changes how household functions are powered. Energy efficiency concerns how much energy is required to deliver those functions. The two approaches can reinforce one another, but they address different aspects of home performance.

Replacing gas heating, hot water or cooking with electric alternatives is an electrification decision. Improving insulation, glazing, shading or appliance efficiency is an energy efficiency decision. Some upgrades achieve both: replacing an older heating or hot water system with an efficient electric heat pump can change the energy source while also reducing the energy required to provide the service.

The distinction matters when planning a new home or upgrading an existing one. A fully electric dwelling can still have high heating and cooling demand, while a thermally efficient dwelling may continue to use gas. Understanding both aspects helps project teams identify whether the priority is reducing demand, changing household systems or coordinating the two.

Electrification and energy efficiency are different decisions, but they can deliver better outcomes when considered together.

The appropriate balance depends on the dwelling, existing systems and project objectives.

Ratings and Compliance Context

Home Electrification Connects With BASIX, NatHERS and Whole of Home, but It Is Not the Same as Any of Them

Each framework addresses a different aspect of residential performance. Electrification concerns the transition toward electric household systems, while applicable assessments help establish energy performance and compliance outcomes.

Home electrification is not a separate residential rating tool or approval pathway. It is a change in how household energy services are supplied, which can influence how homes are designed, assessed, upgraded and operated. The relevance of BASIX, NatHERS and Whole of Home depends on the project location, building stage and applicable assessment requirements.

BASIX establishes sustainability requirements for applicable residential development in New South Wales. NatHERS thermal performance assessments model the heating and cooling energy required to maintain specified indoor conditions, based on the dwelling's design and local climate. NatHERS Whole of Home separately models the energy performance of specified household systems, including heating, cooling, hot water, lighting, relevant appliances, solar generation and battery storage.

Electrification interacts with each framework differently. Electric hot water, heating, cooling, cooking and solar may influence the energy commitments of an applicable BASIX project. NatHERS thermal modelling helps establish the heating and cooling demand associated with the building design, although detailed equipment sizing requires a separate assessment. Whole of Home provides a more direct connection to electrification because it considers modelled household energy systems and their contribution to overall energy performance.

Keeping these roles distinct prevents electrification from becoming confused with compliance. A home may be designed as all-electric but must still satisfy applicable energy performance and approval requirements. Equally, achieving compliance does not automatically establish a complete electrification strategy or determine the most appropriate sequence of household upgrades.

Electrification is a household energy transition. BASIX, NatHERS and Whole of Home provide different forms of assessment and evidence.

Explore the individual roles of BASIX, NatHERS and NatHERS Whole of Home within the broader residential performance ecosystem.

Future Housing

Planning Electric Homes for Changing Household Energy Needs

Future-ready electrification is not about installing every available technology. It is about making design and upgrade decisions that allow household energy systems to change without unnecessary rework.

A home designed or upgraded today may need to accommodate different household energy demands in the future. Gas appliances may be replaced with electric alternatives, rooftop solar capacity may change, electric vehicle charging may be introduced, or heating and cooling requirements may shift following building improvements.

These changes can affect electrical infrastructure, equipment locations, installation access and the timing of building works. Considering likely future requirements during design or renovation can help project teams identify opportunities to coordinate upgrades and avoid preventable alterations later.

For new homes, early coordination may involve reviewing proposed heating and cooling systems, hot water equipment locations, electrical supply requirements and the potential for solar or future battery storage. For existing homes, the priorities may be different: understanding current electrical capacity, planning appliance replacement and identifying upgrades that can be completed alongside scheduled renovation work.

Future-ready planning does not require every system to be installed immediately. It means distinguishing between decisions that should be resolved early and equipment that can reasonably be added or replaced later, with appropriate advice from electrical designers, installers and other relevant professionals.

Future Ready Homes

The most useful future-ready decisions are often those that preserve flexibility before equipment and building works are finalised.

Understanding likely electrical loads, available installation space and planned building improvements can make later electrification decisions easier to coordinate.

Future-ready electrification begins with decisions made before equipment is installed.

For new homes and major renovations, considering energy performance and electrical requirements early can help avoid unnecessary redesign, replacement or installation constraints later. Our all-electric home design checklist outlines the key considerations for Australian residential projects.

Related Knowledge

Explore the Wider Residential Performance Ecosystem

Home electrification connects household energy systems with building performance, design and upgrade planning. These related Knowledge Hubs explain the assessment frameworks and residential performance approaches that may be relevant to different projects.

Project Review

Planning an All-Electric Home or Residential Energy Upgrade?

Send your available plans, existing dwelling information or proposed upgrade details to Certified Energy. Our team can review the project context and help identify relevant residential energy performance assessments, compliance requirements and opportunities to coordinate building fabric and household energy decisions.

For new homes, this may involve NatHERS, BASIX or Whole of Home assessments, depending on the project and location. For existing dwellings, an energy assessment may help inform decisions about thermal performance and future improvements. Electrical infrastructure and equipment installation requirements should be reviewed by appropriately qualified professionals.