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Avoid power bill shock this winter with RAA Energy expert advice 

20 June, 2025

With SA power prices set to rise from 1 July, RAA is encouraging homeowners to take steps to reduce heat loss and avoid winter bill shock. 

Heating accounts for almost half of a typical household’s power usage during winter, and simply draught-proofing doors and windows by sealing gaps could bring heating costs down by up to 25%, according to the State Government*.

RAA Energy also recommends the ideal thermostat temperature for heating appliances is between 18-21 degrees Celsius – and setting the louvres towards the floor can help heat the home quickly as hot air rises. 

Effective insulation can also reduce heat lost through ceilings and walls by up to 60%, with a typical home losing heat from the:

  • Ceiling 25-30% 
  • Walls 15-25%
  • Door air leaks 15-25% 
  • Floor 10-20% 
  • Windows 10-20%

RAA General Manager Home & Energy Ben Owen said with electricity prices set to rise this July, now is a good time to look at your home’s energy efficiency to avoid winter bill shock. 

“Winter can be a time of high power usage as we all seek to keep our homes warm and toasty, but avoiding unnecessary heat loss and shifting the use of big appliances to ‘Shoulder and Off-peak periods’ could save you hundreds of dollars.” Mr Owen said.

“Have a close look at your doors and windows for any small gaps – sealing these up can be an easy way to save big on your heating costs.  

“Appliance running costs can also be reduced by up to 10% for every degree lower they are set, so we recommend around 21 degrees or just below to maximise efficiency. 

“While it’s tempting, try to avoid using the shower to keep warm – as heating hot water can account for over 20% of household power use. If you’re having an evening shower after footy training, aim for four minutes. 

“RAA also offers Trade Assist to support members in improving their home’s energy efficiency. 

“Whether you are looking to get roof insulation or a fan installed, RAA can connect you with a licenced and reliable tradie.

“Electrical and plumbing services are also available 24/7 – while roof repairs, carpenters, air conditioning repairers and general maintenance is also covered – with a 12-month warranty on workmanship. 

“RAA Trade Assist takes the stress out of organising home repairs and maintenance, while ensuring your appliances are being utilised as efficiently as possible, which may ultimately help cut power bill costs.” 

Mr Owen also recommended shopping around for a better deal on energy. 

“June is a good time to re-assess your energy provider and shop around, with a recent ACCC report** revealing some households could be saving around $300 a year just by switching plans,” Mr Owen said.

“It’s easy to assume your energy provider is offering you the best deal available, but unfortunately we know in many cases, consumers are not often on their retailer’s best plan.

“Unlike most electricity providers, RAA Energy doesn’t profit from the electricity our members use; we charge a monthly subscription and pass on the cost of electricity direct to the member without a retail markup.*** 

“Plus, we provide our members with personalised monthly energy insights^ to help households understand their energy use and get their electricity bills down even further.” 

Tips to reduce your heating bill this winter:

  • Heat the person first: If you’re looking to reduce your power bill, heat the person, not the home first. Each additional degree of heating can account for up to 10% of your energy use. It isn’t cost-effective to be indoors during winter in shorts and a t-shirt – instead try layering up first.
  • Use an electric blanket: Heated rugs and blankets have the lowest running costs of any other appliance – with calculations determining around $46 per season to run a single bed electric blanket. The hourly costs are around 4-6 cents an hour – and increase to 5-7 during peak periods.
  • Only heat the areas you need: Close doors to rooms you’re not using, such as laundries or bathrooms. This means you’ll need less energy to heat the rest of your house. If cold air is getting in, warm air is getting out – so also make sure you’re investing in door snakes or draft proofing strips which can reduce your heat by up to a quarter. 
  • Use windows of opportunity: Around 10-20% of a home’s heating can be lost through the windows – so quality curtains and blinds can be a low-cost option and reduce heat loss. Otherwise, let the sunshine in. On sunny days open your curtains and take advantage of the winter rays. 
  • Avoid the peak: Under some contracts, energy can cost you less if you use it outside the peak times. Take advantage of shoulder and off-peak tariffs (between 10am – 3pm, and 1:00am – 6:00am) by setting big appliances like washing machines and the dishwasher to run during these times. 
  • Switch electricity providers: If you want to access electricity usage rates without the retail mark-up, consider switching to RAA Energy. Signing up takes less than 5 minutes online: Energy – Fair electricity plans for South Australians | RAA

*SA Gov – Heating your home

**Inquiry into the National Electricity Market report – December 2024, pg 48 

***Monthly fee, T & Cs apply. RAA Energy is a trading name of the licensed energy retailer Energy Locals Pty Ltd, ACN 606 408 879. 

^ Monthly billing and personalised energy insight services are only available to customers with a compatible smart meter installed at the premises.