Why your solar and battery system might not be saving as much as you think
Solar panels and home batteries don't automatically maximise savings. Learn how energy optimisation helps get more from the system you already own.
Installing solar panels and a home battery is a big investment. For most homeowners, the expectation is simple: lower energy bills and a smaller carbon footprint. But for many people, the reality doesn’t quite match up.
Even with solar and/or a battery installed, energy bills can still feel higher than expected. And that can be confusing. After all, if you’re generating and storing your own electricity, shouldn’t the savings be automatic?
The answer, in most cases, is no.
That exact frustration is what our founders Tom and Sally ran into with their own home setups. It’s the problem that led them to build Decent Energy, and later Shîfter.
The reason is that most solar and battery systems are passive by default. They store energy, but they don’t actively decide when it’s best to use it. Electricity prices change throughout the day. The carbon intensity of the grid changes too. But unless something is actively managing those decisions, your system simply follows basic rules rather than optimising for cost or carbon.
This means that even homeowners on smart tariffs can still end up using expensive grid electricity at the wrong times. Your battery might discharge when prices are low, or charge when electricity is more carbon intensive than it needs to be. None of this is obvious day to day, but over time it adds up.
Another common assumption is that being on a smart or variable tariff automatically fixes this. Tariffs like Agile or Flux set the prices, but they don’t manage your battery for you. Without optimisation, the homeowner is often left to understand price signals, set schedules, or manually tweak settings. Most people simply don’t have the time or desire to do that.
As a result, many solar and battery owners are unknowingly leaving savings on the table.
That’s exactly what Shîfter was built to solve. Shîfter makes active decisions on your behalf. It looks at expected solar generation, household usage, electricity prices and carbon intensity, then decides when to store and use energy to deliver better household outcomes.
The key point is that this doesn’t require new hardware or changes to how you live. It’s about getting more value from the system you already own.
For homeowners, the real benefit of optimisation is simplicity. Instead of worrying about timings or tariffs, the system works quietly in the background. Over time, this can lead to lower bills and better use of cleaner electricity.
If you’ve ever wondered why your solar and battery setup isn’t delivering what you expected, it’s likely not because you made a bad choice. It’s because the final piece, optimisation, is missing.