After changing your energy plan, check your solar battery settings before assuming the system is still saving money. A new tariff can change peak periods, off-peak windows, feed-in rates, demand charges and controlled load rules. Your battery storage, solar inverter and monitoring app may need updated charge schedules, discharge times, backup reserve levels and export settings to match the new plan.
What Solar Battery Settings Should You Check After Changing Energy Plans?
After changing energy plans, check the solar battery settings that control when the battery charges, when it discharges, how much backup reserve it keeps and how it responds to tariffs.
The most important settings to review are:
- Battery charge schedule.
- Battery discharge schedule.
- Time-of-use tariff windows.
- Backup reserve level.
- Grid charging permission.
- Export or feed-in tariff mode.
- Demand charge or peak shaving mode.
- Solar inverter operating mode.
- Monitoring and notification settings.
A new energy plan can change when electricity is cheap, when it is expensive and how much exported solar is worth. If the battery keeps using the old settings, it may charge at the wrong time, discharge too early, export at low value or keep too much reserve when the business needs daily savings.
Why Energy Plan Changes Matter in 2025
Energy plans matter because solar and battery savings depend on the details of the tariff.
Energy.gov.au explains that time-of-use tariffs charge different rates at different times of day. Peak rates are higher, off-peak rates are lower, and some plans also include shoulder periods. The same guidance notes that seasonal time-of-use tariffs can use different rates and periods at different times of year.
Demand charges also matter for businesses. Energy.gov.au explains that demand charge tariffs are based on the highest amount of power drawn from the grid at any time. It also notes that demand charges are common in small business plans.
Feed-in tariffs create another reason to review settings. Energy.gov.au says feed-in tariffs have fallen significantly since they were first offered in 2008, and that new solar customers usually receive feed-in tariffs much lower than the retail rate paid to buy electricity. This means battery settings should usually prioritise useful self-consumption over low-value export.
Battery adoption is also changing. From 1 July 2025, the Australian Government’s Cheaper Home Batteries Program began supporting eligible small-scale battery systems for households and businesses. Energy.gov.au says the program helps users store cheap and clean solar power for when it is needed and reduces grid pressure during peak times.
The practical lesson is simple: when the energy plan changes, old battery settings may no longer match the new bill.
How an Energy Plan Can Change Battery Value
An energy plan changes the value of each kilowatt hour.
The battery might store the same amount of energy, but the savings can change if the tariff changes.
| Energy Plan Change | What Can Happen | Solar Battery Setting to Review |
|---|---|---|
| Peak period moves later | Battery may discharge too early | Discharge schedule |
| Off-peak window changes | Battery may charge from the grid at the wrong time | Grid charge schedule |
| Feed-in tariff falls | Export becomes less valuable | Self-consumption priority |
| Demand charge applies | Short grid spikes become more expensive | Peak shaving or demand control |
| Controlled load changes | Hot water or appliance timing may change | Load timing and circuit control |
| Plan changes seasonally | Settings may need seasonal review | Tariff calendar and schedule |
| Smart meter added | More detailed tariff options may apply | Monitoring and tariff data |
A solar battery system should follow the new energy plan, not the old habit.
Solar Battery Settings to Check First
Before changing anything yourself, confirm whether the installer, retailer or battery manufacturer should adjust the settings. Some systems allow owner-level schedule changes, while others need installer access.
Check Solar Battery Settings for Tariff Windows
The first setting to check is the tariff schedule.
If the energy plan has peak, shoulder and off-peak periods, the battery should know when those periods apply.
A battery that discharges during shoulder rates may miss the more expensive peak period later.
A battery that charges from the grid outside the cheapest window may increase costs.
Check:
- Peak start time.
- Peak end time.
- Shoulder periods.
- Off-peak periods.
- Weekend rates.
- Seasonal tariff changes.
- Public holiday rules if relevant.
The battery schedule should match the tariff that appears on the actual bill, not a generic plan description.
Check Battery Storage Charge Times
Battery storage should charge when it makes financial sense.
For many solar systems, that means charging from excess solar first.
For some energy plans, grid charging may also make sense during cheap off-peak windows, but only if the system is configured correctly and the tariff supports it.
Check:
- Whether grid charging is enabled.
- What time grid charging starts.
- What time grid charging stops.
- Whether solar charging has priority.
- Whether the battery is charging before the expensive period starts.
- Whether the system avoids charging from the grid during peak rates.
Grid charging is not automatically good or bad. It depends on the energy plan.
Check Solar Battery Discharge Times
Discharge timing controls when the battery supplies power to the site.
If the business or household has moved to a time-of-use energy plan, the battery may need to hold energy until peak periods.
Check:
- Does the battery discharge before peak starts?
- Does it empty too early?
- Does it still have energy during the most expensive window?
- Does it discharge overnight when rates are already low?
- Does the system prioritise self-consumption correctly?
A battery that empties at the wrong time may look active in the app, but still miss the best savings window.
Check Backup Reserve Levels
Backup reserve controls how much energy the battery keeps for outages.
A higher reserve may improve resilience, but it can reduce daily savings because less capacity is available for normal cycling.
Check:
- Current reserve percentage.
- Whether the reserve suits the new energy plan.
- Whether outage risk has changed.
- Whether critical loads need backup.
- Whether the battery still cycles enough after reserve is held.
For a business, backup reserve should match operational risk. For a home, it should match comfort, outage frequency and essential loads.
Check the Solar Inverter Mode
The solar inverter controls how solar, battery storage and the grid interact.
Energy.gov.au says an inverter or battery display can show system status or operating mode, battery state of charge, charging or discharging power, daily generation and fault codes.
After an energy plan change, check whether the solar inverter is still using the right operating mode.
Common modes may include:
- Self-consumption mode.
- Backup mode.
- Time-of-use mode.
- Economic mode.
- Peak shaving mode.
- Export control mode.
- Virtual power plant mode.
Names vary by brand, but the principle is the same: the operating mode should match the new energy plan.
Energy Plan Details to Compare Against Your Battery
Do not change battery settings without first reviewing the new plan.
The plan details decide what the battery should do.
Peak, Shoulder and Off-Peak Rates
Time-of-use tariffs change the value of stored energy.
Energy.gov.au explains that peak rates usually apply when electricity costs the most, while off-peak rates apply when electricity is cheapest.
If peak periods moved, update the battery discharge strategy.
If off-peak periods moved, review the grid charge schedule.
Feed-In Tariff
Feed-in tariffs affect whether the system should export or store energy.
Energy.gov.au explains that new solar customers usually receive feed-in tariffs much lower than the retail rate they pay to buy electricity.
That means it often makes more sense to use stored energy on site instead of exporting too much solar.
Demand Charge
Demand charges can make short spikes expensive.
Energy.gov.au explains that demand tariffs use the highest demand measurement for the billing month to calculate the demand charge.
If the new energy plan includes a demand charge, the battery may need a peak shaving or demand control strategy.
Controlled Load Rules
Controlled load tariffs apply to specific appliances on a separate circuit, often electric hot water.
If the energy plan changes controlled load rules, the battery may not interact with those loads the way the owner expects.
For example, changing hot water timing can affect how much solar is available for battery charging.
Smart Meter Requirements
Some tariffs need a smart meter.
Energy.gov.au says time-of-use plans typically need a smart meter to measure electricity use at different times of day. Demand charge plans also typically need a smart meter.
If the meter changes, the battery monitoring setup may also need review.
Solar Battery Settings for Businesses
Businesses need extra care because commercial energy plans can include demand charges, different operating hours and higher downtime costs.
Check Solar Battery Settings Against Operating Hours
A business battery should match the hours when the site actually uses power.
A daytime office, warehouse, clinic, restaurant, cold storage site and workshop may all need different settings.
Check:
- Opening hours.
- Peak operating periods.
- Machinery start-up times.
- Refrigeration cycles.
- Weekend usage.
- After-hours security or lighting.
- Expected EV charging windows.
The right battery schedule should follow the business operation, not just the tariff table.
Check Battery Storage for Demand Spikes
If the business energy plan includes a demand charge, the battery may need to support peak shaving.
The system should detect or anticipate high draw and discharge at the right time.
This depends on inverter output, battery state of charge, control settings and site load behaviour.
A battery cannot reduce a demand spike if it has already emptied before the spike happens.
Check Backup Priorities
Businesses should also review backup reserve and critical circuits after changing plans.
Critical loads may include:
- Refrigeration.
- POS systems.
- Internet and communications.
- Security systems.
- Lighting.
- Office equipment.
- Selected machinery controls.
Backup settings should not be mixed up with daily savings settings. One protects operations; the other optimises bill reduction.
Solar Battery Settings for Homes
Homeowners also need to check settings after changing energy plans.
A new plan may change the best time to charge the battery, run appliances or use stored energy.
Check Evening Peak Periods
Many households use more electricity in the evening.
If the new energy plan has a higher evening peak rate, the battery should ideally hold enough energy for that window.
Check Hot Water and Controlled Load
Hot water can affect battery value.
If hot water stays on controlled load, it may not use solar or battery energy the way the owner expects.
If hot water moves to solar self-consumption, an accredited electrician may be needed for wiring changes. Energy.gov.au warns that converting hot water from controlled load to solar self-consumption needs an accredited electrician.
Check EV Charging Times
EV charging can drain a battery quickly if it is not scheduled properly.
After changing energy plans, check whether EV charging should happen during solar hours, off-peak periods or another controlled window.
A battery may support EV charging, but only if the system has enough capacity and the settings protect household needs.
Monitoring After Changing Solar Battery Settings
After changing settings, monitor the system for at least one full billing cycle.
Energy.gov.au says monitoring a rooftop solar or battery system can show generation, battery charging and discharging, whether the system is working correctly, electricity use and the best time to use electricity.
A monitoring app can help confirm whether the new settings are working.
Check:
- Battery state of charge in the morning.
- Battery charge behaviour during solar hours.
- Battery discharge behaviour during peak periods.
- Grid import during expensive windows.
- Solar export during low feed-in periods.
- Fault codes.
- Unexpected overnight discharge.
- Backup reserve after daily cycling.
If the monitoring data does not match the energy plan, the settings need another review.
Solar Battery Settings Checklist After an Energy Plan Change
Use this checklist after changing retailer, tariff or plan type.
| Setting or Detail | What to Check | Why It Matters |
| Energy plan type | Flat, time-of-use, demand or controlled load | Sets the battery strategy |
| Peak window | Start and end times | Controls discharge timing |
| Off-peak window | Cheapest grid period | Controls grid charging |
| Shoulder period | Middle-rate window | Helps avoid wasting stored energy |
| Feed-in tariff | Export value | Decides store vs export priority |
| Demand charge | Highest grid draw rule | May require peak shaving |
| Backup reserve | Battery percentage kept for outages | Balances resilience and savings |
| Grid charging | Enabled or disabled | Can help or hurt depending on tariff |
| Solar inverter mode | Self-consumption, TOU, backup or economic mode | Controls system behaviour |
| Monitoring app | Battery and grid data | Confirms whether settings work |
| Controlled load | Hot water or appliance circuit | Affects solar and battery interaction |
| EV charging | Schedule and power draw | Prevents accidental battery drain |
This checklist helps avoid the common mistake of changing the energy plan but leaving the battery on old settings.
Common Solar Battery Settings Mistakes
Leaving Old Tariff Windows in the Battery App
If the app still uses old peak and off-peak times, the battery may discharge at the wrong time.
Charging From the Grid at the Wrong Time
Grid charging can help under some plans, but it can increase costs if the battery charges during expensive periods.
Keeping Too Much Backup Reserve
A high reserve may reduce daily savings if the owner does not need that much backup protection.
Keeping Too Little Backup Reserve
A low reserve may improve daily savings but leave the site exposed during outages.
Forgetting the Solar Inverter Mode
The battery schedule may look correct, but the solar inverter mode may still limit how the system behaves.
Not Checking Monitoring Data
Settings should be checked against real system behaviour, not just app labels.
When to Ask an Installer or Supplier for Help
Some solar battery settings can be changed by the owner. Others should be reviewed by an installer, retailer or supplier.
Ask for help if:
- The energy plan changed to time-of-use or demand pricing.
- The battery does not discharge during peak periods.
- Grid charging looks wrong.
- Backup is not working as expected.
- The solar inverter shows fault codes.
- The battery is not charging from solar.
- The system is participating in a virtual power plant.
- The site has three-phase power or complex loads.
- The business needs demand charge control.
You are unsure whether the setting affects safety, compliance or warranty.
For businesses planning inverter and storage upgrades, commercial battery and inverter solutions can help frame the battery, inverter and energy plan together. For homes or businesses comparing hybrid inverter options, Deye battery and inverter solutions can support planning around solar inverter control, battery storage and future expansion.
Conclusion
Solar battery settings should be checked after changing energy plans.
A new energy plan can change peak periods, off-peak windows, feed-in tariffs, demand charges, controlled load rules and the value of stored energy. If the battery keeps using old settings, the system may still work technically, but it may not work financially.
The most important settings to review are charge schedule, discharge schedule, tariff windows, backup reserve, grid charging, export behaviour, solar inverter mode and monitoring.
At Solarrains, we help customers think beyond battery capacity. The goal is to match battery storage, solar inverter control and energy plan details so the system charges, discharges and supports the site at the right time.
FAQs
What solar battery settings should I check after changing energy plans?
Check tariff windows, charge schedule, discharge schedule, backup reserve, grid charging, feed-in tariff settings, demand control, solar inverter mode and monitoring data.
Why do solar battery settings matter after changing energy plans?
Solar battery settings matter because a new energy plan can change when electricity is cheap, when it is expensive and how much exported solar is worth.
Can changing energy plans affect battery storage savings?
Yes. Battery storage savings can change if the new plan has different peak periods, off-peak rates, demand charges or feed-in tariffs.
Should I change solar battery settings myself?
Only change owner-level settings you understand. Ask an installer, retailer or supplier for help if the setting affects safety, compliance, backup operation, inverter control or warranty.
How does the solar inverter affect battery settings?
The solar inverter controls how solar, battery storage and the grid interact. Its operating mode can affect charging, discharging, backup and export behaviour.
Should a battery charge from the grid?
Grid charging can help under some energy plans, especially during cheap off-peak periods. It can also increase costs if scheduled at the wrong time.
How much backup reserve should a solar battery keep?
Backup reserve depends on outage risk, essential loads and savings goals. A higher reserve improves resilience but leaves less battery capacity for daily bill savings.
How do I know if the new battery settings are working?
Use monitoring data to check battery charge and discharge times, grid import during peak periods, solar export, state of charge and any solar inverter fault codes.
