Think of the modem your internet provider gives you for free. It sits in the corner, it does its job, and it enables a service you couldn't get without it. Ultimately, what you care about is the cost, speed and reliability of your internet. With Cable, a behind-the-meter battery works the same way for electricity.
It's an energy storage system installed on your side of the meter, at your premises. Unlike the big grid-scale batteries you see in the news, this one works specifically for your business. And for Australian SMEs, it's become the most effective ways to cut electricity costs.
How it works
The battery is installed at your premises and connected to your switchboard on its own stand-alone circuit. When operated properly (by experts like Cable), it does two things:
- Charges when electricity is cheap and the grid is flooded with renewables (or, from any solar installed on site).
- Discharges when electricity is expensive and the grid is running on fossil fuels.
Your business runs normally the entire time. The lights stay on, the cool room holds temperature, the equipment works. The only difference is where the power comes from: the grid directly, or the battery sitting in the corner.
Why it saves money
A behind-the-meter battery saves money in three ways. Most people only know about the first.
1. Energy arbitrage
Buy low, use high. The wholesale electricity price changes every five minutes and can swing from deeply negative to eye-watering. A battery charges during the cheap periods and discharges during the expensive ones. The spread between those prices is pure savings.
2. Demand charge reduction
This is often a big win for business customers. Commercial tariffs can include a demand charge based on your highest power draw in any single 30-minute window. One spike and your demand charge is set for the entire month.
A battery caps that spike. When demand rises, the battery discharges to cover the difference, keeping your measured peak below the penalty threshold.
3. Cleaner power
The battery charges when the grid is flooded with cheap renewables: solar during the middle of the day, wind overnight. It discharges when the grid is running on gas and coal, during the morning and evening peaks. This means your business draws less power from the grid during its dirtiest hours and more during its cleanest.
The result is a measurable reduction in the real carbon intensity of your electricity. Not offsets. Not certificates. Actual decarbonisation, because the electrons you use come from cleaner generation.
Do you need solar?
No. This is a common misconception. Solar helps (the battery can store excess generation for later instead of exporting it), but most of the value comes from energy arbitrage and demand shaving, both of which work with grid power alone.
Australian SMEs were largely left behind in the solar boom. Many don't have suitable roofspace, or they rent and can't justify the investment on someone else's building. A battery doesn't need a roof. It's simpler to install than rooftop solar. There's no structural modification to the building. You may still need landlord approval if you're renting, but the conversation is easier when you're not asking to bolt panels to their roof.
The three ways to get one
Option 1: Buy it yourself
Purchase and install a commercial battery system outright. You own the asset, manage the maintenance, and handle (or pay someone to handle) the optimisation strategy.
Upside: Full ownership, no ongoing commitment.
Downside: Significant upfront capital, multi-year payback, you carry all the risk, and a battery on a basic self-consumption strategy captures only a fraction of the value a properly optimised one could.
Option 2: Finance it
Finance or lease a battery system. You still own or lease the hardware and are typically on-risk for its performance in the market. Someone else may handle the optimisation.
Upside: Spreads the cost over time.
Downside: You carry maintenance risk, your underlying retail tariff usually doesn't change, and if registered in a VPP the bill credits are often modest.
Option 3: A retail plan with a bundled battery
The provider bundles a battery into your electricity plan. You don't buy or lease anything. You switch your electricity contract to a provider who installs and operates the battery at your premises, then offers you a structurally lower retail rate.
Upside: Zero upfront cost, zero maintenance, lower rate from day one, zero performance risk.
Downside: Multi-year contract (typically 3 years), and you don't own the battery.
Cable's model is a retail electricity plan with a bundled battery. We fund the battery, install it, maintain it, and run the trading strategy with our AI-powered risk management platform. You get a flat 24/7 rate, guaranteed for three years, that's typically 20-40% lower than what you're paying today. The battery also makes your electricity meaningfully cleaner. If the battery breaks, that's our problem. Zero risk, zero complexity.
What to ask any battery provider
- Who carries the risk? If the battery underperforms or fails, does your electricity cost change?
- Does it actually eliminate demand charges? Some setups reduce them. Others don't touch your tariff structure at all.
- What's the real total cost? Include maintenance, monitoring, inverter replacement, and your time.
- What happens at the end? Can you renew, go month-to-month, or switch? What happens to the hardware?
Is it right for your business?
If you're an Australian SME on a commercial tariff with demand charges, a behind-the-meter battery will almost certainly reduce your costs. The question is whether you want to own the complexity or hand it to someone else.
If you'd rather get back to running your business, check what Cable can offer. We pull your smart-meter data and quote you a guaranteed flat rate. Takes a few minutes, no commitment.