Energy Efficiency: The First Step Before Going Solar

Whether you already have solar panels or are still considering them, reducing your baseline electricity consumption is always the smartest first move. A smaller energy appetite means a smaller (cheaper) solar system, faster payback, and lower bills — full stop. Here are ten practical strategies that make a measurable difference.

1. Switch to LED Lighting Throughout Your Home

LED bulbs use around 75% less electricity than traditional incandescent bulbs and last significantly longer. If you still have older halogen downlights, replacing them with LED equivalents is one of the fastest-payback energy upgrades available.

2. Install a Smart or Programmable Thermostat

Heating and cooling typically account for the largest share of home energy use. A smart thermostat learns your schedule and adjusts automatically, avoiding the energy waste of heating or cooling an empty house. Even a basic programmable model can deliver meaningful savings.

3. Seal Drafts and Improve Insulation

Air leaks around doors, windows, and ceiling penetrations can undermine even the best HVAC system. Weatherstripping, door seals, and added ceiling insulation are low-cost upgrades with strong returns. Better insulation means your heating and cooling systems run for shorter periods.

4. Upgrade to Energy-Efficient Appliances

When older appliances reach end-of-life, replace them with the highest energy-rated models you can afford. Pay particular attention to:

  • Refrigerators (running 24/7, they're a major ongoing cost)
  • Washing machines (front-loaders use less hot water than top-loaders)
  • Dishwashers (modern units use surprisingly little water and energy)
  • Heat pump dryers (far more efficient than resistive electric dryers)

5. Use Appliances During Off-Peak Hours

If your electricity plan has time-of-use (TOU) pricing, running dishwashers, washing machines, and EV chargers during off-peak windows (typically overnight) can meaningfully cut your bill. Check with your utility whether a TOU tariff makes sense for your household.

6. Switch Your Hot Water System to a Heat Pump

Electric resistance hot water systems are energy hogs. A heat pump water heater uses 60–70% less electricity to produce the same amount of hot water by extracting heat from the surrounding air. For solar households, pairing a smart hot water system with solar production scheduling is particularly effective.

7. Eliminate Standby Power ("Vampire" Loads)

Electronics on standby — TVs, set-top boxes, gaming consoles, microwaves — quietly draw power around the clock. Use smart power strips or simply switch off at the wall when not in use. It won't transform your bill on its own, but combined with other measures it adds up.

8. Optimise Your Solar Self-Consumption (If You Have Solar)

If you have solar panels, shift energy-intensive tasks to daylight hours when your panels are producing:

  • Run the dishwasher after lunch, not after dinner.
  • Schedule the pool pump for midday.
  • Pre-heat or pre-cool your home before the sun goes down.
  • Charge your EV during peak solar hours if your schedule allows.

9. Monitor Your Energy in Real Time

You can't manage what you can't measure. A home energy monitor (either a standalone device or one built into a solar inverter) shows you exactly where your electricity is going. Many homeowners are surprised to find a single appliance — a hot tub, old second fridge, or pool pump — driving a significant portion of their bill.

10. Review Your Electricity Plan Regularly

Electricity retail markets in many countries are competitive. Switching to a better-suited tariff — flat rate vs. time-of-use, different retailer pricing — can save money with zero physical effort. Set a reminder to compare plans annually, especially if your energy usage profile changes (new EV, new solar system, working from home).

Putting It All Together

No single tip here will halve your electricity bill, but combining several of them compounds the savings. Start with the highest-impact, lowest-cost measures (LED lighting, draft sealing, standby reduction) and work up to larger investments (heat pump hot water, insulation upgrades) as budget allows. Every kilowatt-hour you don't use is one you don't have to generate or buy.