Recent changes to off-peak hot water may affect some Penrith families.
For years, Penrith families have relied on off-peak electricity tariffs to keep hot water bills low and ensure the tank was full and ready for morning showers. Traditionally, electric hot water systems were programmed to heat overnight when demand on the power grid was at its lowest.
That predictability has now changed. Energy providers across NSW, including in Penrith, are moving customers to what’s called Controlled Load. Many locals are finding this shift confusing, especially when it affects when (and how often) their hot water system heats.
How Controlled Load hot water works
Instead of running to a fixed overnight schedule, Controlled Load allows electricity providers to choose when your hot water system operates. The aim is to help balance the grid throughout the day, particularly as more households install rooftop solar.
For Penrith households, this can mean your hot water:
- May not reheat overnight as expected
- Could switch on at random times such as morning, afternoon or late evening
- Occasionally may not heat at all within a 24-hour cycle if the grid doesn’t require it
How this affects Penrith families
We’re seeing more local customers experiencing unexpected hot water shortages. Common complaints include:
Running out of hot water: Families expecting a morning recharge are sometimes left with lukewarm or cold showers.
Problems in larger households: Where shower times are already staggered, the lack of predictable reheating makes it harder to plan.
Loss of control: Heating times are no longer in the hands of homeowners but at the discretion of the electricity provider.
Lifestyle changes: Families may need to spread out hot water use, shower at different times, or consider upgrading their systems.
Does Controlled Load increase bills?
Controlled Load is still cheaper per unit than standard electricity tariffs, but there can be hidden costs:
If the tank runs out, you may need to boost on your main tariff, which is more expensive.
Heating during the day can reduce the benefits of using true “off-peak” energy.
Less predictable schedules mean some households are running into higher usage costs without realising why.
Case study : Glenmore Park family
We were recently contacted by a family in Glenmore Park who suddenly began running out of hot water most mornings. They had relied on their off-peak tariff for years, but after being switched to Controlled Load, their tank wasn’t reheating overnight as it used to. With teenagers needing showers before school and parents getting ready for work, this caused major stress in the household.
After assessing their system, we explained how Controlled Load works and why their heating times were no longer predictable. In their case, the most practical solution was to upgrade to a larger storage tank, giving them a bigger reserve of hot water. We also discussed solar and heat pump options for longer-term savings. The family is now enjoying reliable hot water again without the frustration of running out each morning.
What you can do
If you’re finding your hot water supply has become unreliable due to the changes in off-peak hot water, you have a few options:
- Check your tariff: Confirm with your provider when your Controlled Load is scheduled.
- Review your tank size: Larger storage tanks can provide a buffer if reheating doesn’t happen overnight.
- Consider an upgrade: Solar and heat pump hot water systems are increasingly popular across Penrith because they reduce reliance on Controlled Load altogether. Rebates are often available to make the switch more affordable.
- Get expert advice: Our team can assess your household needs and recommend the most reliable and cost-effective solution for your family.
QUESTIONS? GET IN TOUCH
The move from traditional off-peak to Controlled Load has left many Penrith households feeling frustrated and unsure about their hot water supply. While the change benefits the electricity grid, it has reduced control for local families. If your hot water system is no longer meeting your household’s needs, it may be time to explore alternatives. Reliable hot water is essential, and with the right advice, you won’t have to settle for uncertainty.
John Graham
Cheapa Hot Water Penrith