GridEnergy
Economics

Storage pays back. Here is how the model works.

There are four ways a battery system earns back its cost: tariff arbitrage, solar self-use, backup value, and subsidies. We explain each model here. Real figures for your system come at the site survey.

This page explains the model, not the numbers. Real figures for your system come at the site survey, where we have your tariff, load, and solar details.

Economics built on LFP longevity

Long-life LFP cellsTariff-aware GridOSSolar-readySubsidy support
Value models

Four ways your system earns back its cost.

Each model applies differently depending on your tariff, solar setup, and location. Most homes benefit from two or three simultaneously.

Off-peak charging

Tariff arbitrage

Electricity tariffs vary across the day. Storage lets you charge from cheap, off-peak power and use that stored power during expensive peak hours, reducing what you pay per unit.

  • Charge at off-peak rates overnight or mid-day
  • Discharge during morning and evening peaks
  • GridOS handles the schedule automatically against your tariff
Solar + storage

Solar self-use

Without storage, solar power not used immediately is exported to the grid at a low rate, then bought back at a higher rate later. Storage captures that surplus and uses it in your home.

  • Store excess solar generation instead of exporting
  • Use it after sundown when solar is not generating
  • Reduces grid dependency during expensive peak hours
Outage protection

Backup value

Diesel generators are the traditional answer to power cuts. Storage replaces that cost with a system that also saves money daily, rather than one that only runs during cuts and costs money every hour it runs.

  • No diesel cost during outages
  • No noise, no fumes, no servicing
  • The same hardware that saves money daily also backs you up
Government schemes

Subsidy support

Government schemes at both central and state levels may reduce your capital cost. Eligibility depends on your location, system type, and whether solar is included. We verify what applies to your situation.

  • Central schemes where applicable
  • State-level support varies by location
  • Eligibility confirmed at the site survey
The numbers

Real figures are built for your home, not copied from a brochure.

Every number that matters depends on your tariff, your load, your solar generation, and your location. We size them at the site survey, not before it.

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Typical payback period

Varies by tariff and load profile

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Estimated annual saving

Depends on tariff spread and discharge strategy

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Subsidy support available

Eligibility confirmed by location and system type

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Backup hours per charge

Depends on system size and your load

All figures above are gated because they depend on your specific tariff, load profile, solar array size, and applicable subsidies. We will model them precisely at your site survey and present them in your proposal before you decide anything.

What drives the economics

The levers that make a system pay back faster.

Tariff spread

The bigger the gap between your off-peak and peak rates, the more arbitrage earns you. Time-of-use tariffs with wide spreads make storage most valuable.

Solar array size

More solar generation means more surplus to store and use after dark. Storage and solar together remove the export-cheap, import-dear problem completely.

Daily load and pattern

How much you use and when you use it determines how much you can shift to stored power. Peak-heavy households see the biggest bill impact.

System size

A larger battery stores more per cycle and covers more backup hours. The right size is the one that matches your load and the depth of the economic benefit.

Cell longevity

LFP cells hold more of their capacity over time than older chemistries. A longer-lived battery earns more cycles before it needs to be replaced.

Subsidy eligibility

Central and state schemes can reduce the capital cost, improving the payback period. We confirm what applies to your system and location at the survey.

How you get your numbers

We build the economics for your home before you decide.

1

Free site survey

We assess your load, tariff, solar setup, and roof at your place. No obligation.

2

Custom economic model

A real savings model based on your tariff schedule, measured load, and available subsidies.

3

Clear proposal with real figures

A sized system, real payback and savings projections, and a quote before you commit to anything.

Economics proposal visual

ASSET TBD

Economics questions

What people want to know before the numbers.

Because publishing industry averages here would mislead you. Payback and savings depend entirely on your tariff, load, and solar setup. A number that is right for one home is wrong for another. We model yours specifically at the survey.

Any time-of-use or time-of-day tariff with a meaningful spread between off-peak and peak rates makes arbitrage worth running. We check your tariff at the survey and tell you plainly whether arbitrage adds significant value in your case.

No. Arbitrage alone can make storage pay back if your tariff spread is large enough. Solar significantly improves the economics when combined, but it is not required.

Central and state-level support schemes exist for solar and storage installations. Eligibility depends on your location, system configuration, and whether solar is included. We confirm what applies and how to access it at the site survey.

Exact payback figures are computed at the site survey for your specific setup. We do not publish averages here because they are not useful for your decision.

Get the real economics for your home.

Free site survey. We model your tariff, load, and solar and present the figures before you decide anything.