How Can Renewable Energy Help Beat the Cost of Living?

The cost of living remains an important issue for Australian households.

Housing, food, transport and energy all contribute to household expenses, and electricity bills are one area where the way we generate and use energy can make a meaningful difference.

Australia's transition to renewable energy is often discussed in terms of climate change. But there is another important part of the story: renewable energy, electrification, solar and energy storage can also help households and businesses manage energy costs.

That does not mean renewable energy automatically makes every electricity bill cheaper.

What it means is that a combination of renewable generation, rooftop solar, batteries, efficient electric technologies and smarter energy use can create opportunities to reduce the amount of energy people need to buy from the grid and to make better use of lower-cost electricity.

So how exactly can renewable energy help address the cost of living?

Why does renewable energy matter for electricity costs?

Electricity prices are influenced by many different factors.

These include:

• wholesale electricity costs
• transmission and distribution networks
• retail operating costs
• environmental policies and schemes
• electricity demand
• weather conditions
• fuel costs
• the balance between generation and demand.

This means renewable energy is not the only factor affecting household bills.

However, renewable generation can influence the wholesale electricity market because wind and solar do not require the purchase and combustion of coal or gas to generate electricity.

When renewable generation is abundant, it can increase the supply of lower-marginal-cost electricity in the wholesale market.

Recent market data shows the effect.

In the December 2025 quarter, renewable energy supplied more than half of the National Electricity Market's energy supply for the first time, while average wholesale electricity prices fell to A$50 per megawatt hour, down 44% compared with the same quarter a year earlier.

In the first quarter of 2026, renewables supplied 46.5% of NEM generation, the highest first-quarter share recorded, while batteries increasingly shifted renewable electricity from daytime periods into evening demand peaks.

These are wholesale market outcomes, not guarantees about individual household bills, but they illustrate how Australia's changing generation mix can influence the energy market.

How can renewable energy help with the cost of living?

There are several ways renewable energy can contribute to lower or more manageable energy costs.

1. Rooftop solar can reduce the amount of electricity you buy

For households, one of the most direct ways renewable energy can affect electricity costs is through rooftop solar.

Solar panels generate electricity during daylight hours, which can be used to power appliances within the home.

Every kilowatt-hour of solar electricity that a household uses directly is a kilowatt-hour it does not need to purchase from its electricity retailer.

The Australian Government explains that household solar savings primarily come from self-consumption, with additional value potentially coming from exports to the grid and reductions in peak demand.

How much a household can save depends on factors such as:

• system size
• household electricity use
• when electricity is used
• roof orientation and shading
• electricity tariffs
• solar generation
• export rates
• whether a battery is installed.

This means there is no single saving figure that applies to every Australian home.

2. Using your own solar electricity can be more valuable than exporting it

One of the most important concepts for households considering solar is self-consumption.

Imagine your solar system generates electricity at midday.

You could:

1. use it immediately in the home
2. store it in a battery
3. export it to the grid
4. potentially lose some generation if export limits are reached.

Using the electricity yourself can often provide greater value because it avoids purchasing electricity from the retailer.

The value of exported electricity depends on the feed-in tariff available under your electricity plan.

The Australian Government notes that households generally save the most from the electricity they consume directly from their solar system.

This is one reason household energy management is becoming increasingly important.

Running appliances such as washing machines, dishwashers, pool pumps or EV chargers during periods of strong solar generation can increase self-consumption.

3. Batteries can shift solar energy into the evening

Solar generation and household electricity demand do not always happen at the same time.

Solar production usually peaks during the day, while households often consume more electricity later in the afternoon and evening.

A battery can help bridge that gap.

The battery stores electricity when solar output is high and releases it later.

This can help a household:

• increase solar self-consumption
• reduce electricity purchases during expensive periods
• make greater use of time-of-use tariffs
• reduce peak demand
• potentially participate in virtual power plants.

The Australian Government specifically identifies these mechanisms as ways batteries can reduce electricity bills.

4. Batteries are increasingly important to Australia's electricity market

Battery storage is not only changing household energy use.

It is also changing the wider electricity market.

AEMO reported that in the first quarter of 2026, batteries more than tripled their daytime-to-evening energy shifting compared with the previous year, delivering 1,115 MW into the evening peak. AEMO also reported that batteries set the wholesale price in around 32% of NEM trading intervals during the quarter.

This matters because the electricity system needs ways to move energy through the day.

Solar can produce large amounts of electricity during daylight hours.

Batteries can store some of that energy and release it later when demand rises.

This can help reduce reliance on more expensive generation during peak periods.

5. Renewable energy can reduce exposure to fossil fuel costs

Wind and solar have an important characteristic: once a project is operating, the energy resource itself — sunlight or wind — does not have to be purchased.

That is different from fossil-fuel generators, which need ongoing supplies of coal or gas.

This does not mean renewable electricity is free.

Renewable projects still require major investment in land, equipment, financing, transmission, operation and maintenance.

But the absence of a recurring fuel cost can create a different cost structure.

The increasing contribution of renewable generation therefore provides the electricity system with more generation that is not directly exposed to fossil fuel input costs.

6. More renewable generation can put downward pressure on wholesale prices

Renewable generators such as wind and solar generally have low short-run operating costs.

When they produce electricity, that additional supply can reduce the need for higher-cost generation in the wholesale market.

AEMO reported that wholesale electricity prices fell across all NEM regions in the September 2025 quarter despite growing electricity demand, with increasing renewable output contributing to the decline.

The effect was even more pronounced in the December quarter, when average NEM wholesale prices fell 44% year-on-year as renewable generation reached record levels.

Wholesale prices fluctuate significantly, so one quarter should not be interpreted as a permanent trend.

The longer-term point is that a larger supply of low-marginal-cost renewable electricity can change the way the wholesale market operates.

Does cheaper renewable electricity automatically mean cheaper electricity bills?

No.

This distinction is important.

Household electricity bills do not consist only of the wholesale cost of electricity.

They can also include:

• network charges
• retail costs
• environmental scheme costs
• taxes and other charges
• daily supply charges.

The Australian Energy Regulator's Default Market Offer, for example, incorporates wholesale, network, environmental and retail costs when setting the regulated reference price.

Retail electricity plans also vary considerably.

The AER's 2026–27 DMO shows that reference prices will fall for most residential customers in the regulated regions, but the size of the change varies by network area and tariff.

That is why renewable energy should be presented as one important factor in energy affordability, rather than as a guarantee of lower household bills.

Electrification can also help households reduce energy costs

Renewable electricity becomes even more relevant when households replace appliances that use gas or other fuels with efficient electric alternatives.

This process is known as electrification.

Examples include:

• heat-pump hot water systems
• reverse-cycle air conditioning
• induction cooking
• electric vehicles
• electric heating.

The Australian Government's household electrification guidance states that an average household can potentially cut energy costs by hundreds to thousands of dollars a year, depending on its energy use and the technologies adopted.

The actual savings vary from household to household.

A highly efficient electric appliance can use less energy than its gas or other fossil-fuel equivalent, but the financial outcome also depends on electricity and gas prices, appliance efficiency and how the household uses the technology.

Solar + electrification can work together

The combination of electrification and rooftop solar can be particularly useful.

A household with solar panels can use its own renewable electricity to power:

• hot water
• cooking
• air conditioning
• home appliances
• an electric vehicle.

This can increase the amount of household energy demand met by self-generated electricity.

Instead of buying electricity for one set of household needs and gas for another, a home can increasingly use electricity across multiple applications.

Electric vehicles and household energy costs

Transport is another major household expense.

Electric vehicles can potentially reduce running costs because electric drivetrains are generally more energy-efficient than internal combustion engines.

The financial benefit depends on the vehicle, electricity price, driving patterns, charging arrangements and petrol or diesel prices.

For households with rooftop solar, charging an EV during periods of strong solar generation can also increase self-consumption.

This is another example of how different parts of the energy transition can reinforce each other.

Renewable energy and regional Australia

The cost-of-living conversation is not limited to capital cities.

Large-scale renewable energy projects are increasingly being developed in regional areas, where they can create construction employment, procurement opportunities and ongoing economic activity.

ACCIONA's MacIntyre Wind Precinct in Queensland is one example.

The 923 MW MacIntyre Wind Farm consists of 162 turbines and forms part of a wider renewable energy precinct in the Southern Downs and Goondiwindi regions.

The project has generated significant procurement and employment activity across Queensland while contributing renewable electricity to the grid.

Learn more:
MacIntyre Wind Precinct – ACCIONA Australia

Renewable energy and local investment

The economic benefits of renewable infrastructure can extend beyond the electricity generated.

ACCIONA's sustainable finance approach, for example, links renewable energy investment with measurable local benefits through its Sustainable Impact Financing Framework.

The framework supports major projects including MacIntyre Wind Farm and Aldoga Solar Farm and incorporates Local Impact Initiatives designed to create benefits for communities where projects are developed.

This illustrates an important part of the affordability discussion.

A sustainable energy transition can generate value through both energy production and investment in local economies.

Solar for Australian households

Australia has become one of the world's leading residential solar markets.

Solar PV is already widespread across Australian homes and continues to play an important role in the country's electricity system.

For a household considering solar, the financial case should be based on its specific circumstances rather than a generic promise of savings.

Important questions include:

• How much electricity does the household use?
• When is electricity consumed?
• Is there suitable roof space?
• Is the roof shaded?
• What electricity tariff is being used?
• What feed-in tariff is available?
• Would a battery be useful?
• Are there government incentives?
• Could electricity use increase in the future?

The Australian Government's solar guidance and tools can help households assess potential savings and payback.

Government support for solar and batteries

Government schemes can also affect the upfront cost of renewable energy technologies.

Eligible residential solar systems can receive support through the Small-scale Renewable Energy Scheme, while battery assistance has also expanded through changes to the scheme.

Because incentives and eligibility rules can change, households should always check the current government guidance before making a purchase.

The financial case should also be considered over the expected operating life of the system rather than only looking at the initial installation price.

How ACCIONA is helping build a lower-cost energy system

ACCIONA Energía develops renewable energy infrastructure across Australia and internationally.

Its Australian activities include wind, solar and energy storage, alongside other clean-energy technologies.

The company has developed or supported projects including:

MacIntyre Wind Farm
A 923 MW onshore wind project in Queensland.
Explore MacIntyre Wind Precinct

Lilyvale Solar Farm
A large-scale solar project in Queensland.
Explore ACCIONA's solar activity

Battery energy storage
ACCIONA is developing and investing in battery storage solutions to support the integration of renewable electricity.
Explore Battery Energy Storage Systems

These projects contribute to a broader energy system where renewable generation and storage work together to provide electricity when and where it is needed.

Why energy storage matters for affordability

Renewable energy generation is variable.

Solar output changes with the time of day.

Wind generation changes with weather conditions.

Electricity demand also changes throughout the day.

Energy storage helps connect these different patterns.

Batteries can absorb electricity during periods of high renewable generation and release it later.

This can reduce the need to rely on more expensive generation during some peak periods.

ACCIONA describes battery energy storage systems as a way to store excess renewable electricity and release it when demand increases, supporting a more reliable and affordable electricity supply.

Renewable energy and energy security

Affordability and energy security are closely connected.

A diversified electricity system with multiple sources of generation and storage can reduce dependence on any single fuel or technology.

Australia's renewable resources are domestic and naturally replenished.

That does not mean renewable energy removes all energy-security risks.

Projects still rely on supply chains, transmission, technology, financing and skilled workers.

However, increasing renewable generation can diversify the energy system and reduce direct exposure to imported or internationally traded fossil fuel markets.

Can renewable energy solve the cost-of-living crisis?

No single technology can solve Australia's cost-of-living pressures.

Housing, food, transport, healthcare and other costs are influenced by many factors outside the energy system.

Renewable energy can contribute to energy affordability, but it is not a universal solution.

The strongest opportunity comes from combining different measures:

Renewable generation to provide low-emissions electricity.

Rooftop solar to allow households to generate some of their own electricity.

Batteries to store electricity and shift its use through the day.

Electrification to replace inefficient or higher-cost fossil-fuel appliances.

Energy efficiency to reduce the amount of energy needed.

Transmission and storage to make renewable electricity more useful across the wider grid.

Together, these technologies can help make the energy system more efficient and resilient.

What can households do to reduce energy costs?

There is no single action that will work for every household.

But several practical measures can help.

Understand your electricity plan

Compare your current tariff with other offers and check your retailer's rates, supply charges and conditions.

The AER operates Energy Made Easy, an independent comparison service for consumers in participating regions.

Use more of your solar electricity

Run suitable appliances during daylight hours when solar generation is high.

Consider energy-efficient appliances

More efficient heating, cooling and hot water systems can reduce energy consumption.

Consider a battery

A battery may make sense for households with suitable solar generation and electricity use patterns.

Consider electrification

Replacing gas appliances with efficient electric technologies can potentially reduce total household energy costs.

Charge an EV when electricity is cheapest

Households with electric vehicles can potentially reduce charging costs by using solar generation or cheaper electricity periods.

The best combination depends on the household.

What is the future of energy affordability in Australia?

Australia's electricity system is undergoing one of the most significant transformations in its history.

Renewables are providing an increasing share of electricity.

Battery storage is expanding rapidly.

Households are adopting rooftop solar and electrifying appliances.

Electric vehicles are becoming more common.

Large-scale renewable projects are being connected through new transmission infrastructure.

AEMO's recent market data shows this transition already affecting the electricity market, with renewables and batteries playing increasingly important roles in generation and price formation.

The challenge now is to ensure that the benefits of the transition are shared widely.

That means continuing to invest in generation, transmission and storage while making sure households and businesses can access technologies that help them reduce and manage energy costs.

Frequently asked questions about renewable energy and the cost of living

Can renewable energy lower electricity prices?

Renewable generation can contribute to lower wholesale electricity prices because wind and solar have low short-run operating costs and can increase electricity supply when they are generating. However, household electricity bills also include network, retail and other costs.

Can solar panels reduce my electricity bill?

Yes. Solar panels can reduce the amount of electricity a household buys from the grid. The savings depend on system size, solar generation, electricity use, tariffs and how much solar electricity is self-consumed.

Are batteries worth it?

A battery can help increase solar self-consumption, reduce grid purchases and shift energy use away from expensive tariff periods. Whether it is financially worthwhile depends on the individual household.

Does renewable energy make electricity free?

No. Renewable generators still require substantial investment in equipment, land, financing, grid connections, operations and maintenance.

Why are electricity prices different across Australia?

Electricity prices vary because network costs, retail competition, generation mix, tariffs and other factors differ between regions.

Can electrification reduce household energy costs?

It can. The Australian Government says an average household can potentially cut energy costs by hundreds to thousands of dollars a year by electrifying its home, although the actual outcome depends on the household.

Is rooftop solar still worth considering in 2026?

It can be, but the financial outcome depends on the individual home. Solar generation, household consumption, electricity tariffs, feed-in rates, system cost and battery storage all affect the economics.

How do batteries help the electricity grid?

Batteries can store electricity during periods of strong renewable generation and release it during higher-demand periods, helping balance supply and demand. AEMO reports that batteries are increasingly influencing market prices and shifting renewable electricity into evening peaks.

Renewable energy and the path to a more affordable energy future

Australia's renewable energy transition is about more than reducing greenhouse gas emissions.

It is also about building an electricity system that is increasingly diversified, flexible and capable of producing energy from abundant domestic resources.

For households, rooftop solar, batteries, electrification and energy efficiency can create opportunities to reduce and better manage energy costs.

For the wider electricity system, large-scale wind and solar can increase the supply of lower-marginal-cost generation, while batteries and transmission help move that energy to where it is needed.

The transition is not without challenges.

Building renewable generation and the infrastructure around it requires significant investment, and electricity bills will continue to reflect more than the wholesale price of energy.

But the direction is clear.

Renewable generation is becoming a larger part of Australia's electricity system, batteries are becoming more important and households are gaining more ways to produce, store and use energy themselves.

At ACCIONA, we are contributing to that transition through renewable energy generation, energy storage and infrastructure projects across Australia.

The goal is not simply to produce cleaner energy.

It is to help build an energy system that can support Australia's communities and economy for the long term — while giving households and businesses more opportunities to manage one of their most essential costs.