Updated: June 2026 • Energy Solutions NW
Battery Storage vs the Smart Export Guarantee
Battery storage lets you store your solar electricity to use later, while the Smart Export Guarantee pays you for power you export to the grid. Storing and using your own electricity is usually worth more per unit than the export rate. Many homes combine both.This guide compares solar battery storage and the Smart Export Guarantee — how each works, which saves more, and combining both — for NW homes.
They’re often framed as rivals, but they do different jobs. Here’s how they compare.
For the wider picture on storage, see our solar battery storage guide.
Battery Storage vs the SEG: What’s the Difference?
The two do opposite things with your surplus solar electricity:
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- Battery storage: keeps your surplus so you can use it yourself later.
- Smart Export Guarantee: sends your surplus to the grid and pays you for it.
They’re not mutually exclusive — most battery homes still export whatever the battery doesn’t capture.
Considering Solar or Battery Storage?
Get a free, no-obligation quote tailored to your property.
How the Smart Export Guarantee Works
The Smart Export Guarantee (SEG) is an Ofgem-backed scheme. Your supplier pays you for each unit of electricity you export to the grid, recorded by a smart meter.
Rates vary by supplier and change over time, so it’s worth comparing. Our Smart Export Guarantee guide explains how to register and compare tariffs.
How Battery Storage Works
A battery stores the solar electricity your home doesn’t use during the day, so you can draw on it in the evening instead of buying from the grid.
That means you use more of what you generate, rather than exporting it. The trade-off is the upfront cost of the battery itself.
Which Saves You More?
It usually comes down to a simple comparison: the export rate you’d be paid, versus the price you’d otherwise pay to buy that electricity back.
Because buying electricity typically costs more per unit than the export rate, using your own stored power is often worth more than exporting it. The gap depends on your tariff and export rate.
In short: the SEG turns surplus into a small payment; a battery turns surplus into electricity you’d otherwise have bought. The value of each depends on your usage and rates.
Can You Do Both?
Yes — and most battery homes do. The battery captures what it can, and anything left over is exported under the SEG.
Some smart tariffs go further, letting you charge the battery from cheap off-peak grid electricity and export at higher-value times. A battery opens up those options.
Which Is Right for You?
If most of your electricity use is in the evening, a battery helps you use more of your own solar. If you use a lot during the day, you may export more and lean on the SEG.
There’s no single right answer — it depends on your usage pattern, budget and tariff. A survey helps work out what makes sense for your home.
Why Choose a Professional Installer?
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- Right setup: we design around how and when you actually use electricity.
- MCS certification: required to access the Smart Export Guarantee for exported electricity.
- Tariff-ready: systems set up to work with smart and time-of-use tariffs.
- Proper sizing: a battery matched to your usage, not oversized or undersized.
What Happens When You Request a Quote?
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- Submit the form: tell us about your property and energy use.
- We review: our team looks at your usage and requirements.
- Free consultation: we discuss battery and export options with no obligation.
- Tailored quote: you receive a plan designed around your specific needs.
Related Guides
Frequently Asked Questions
Is it better to store solar power or export it?
Because buying electricity usually costs more per unit than the export rate, using your own stored power is often worth more than exporting it. The difference depends on your tariff and export rate.
Can I have a battery and still get SEG payments?
Yes. Most battery homes still export whatever the battery doesn’t capture, and get paid for it through the Smart Export Guarantee. The two work together.
Do I need a battery to get the Smart Export Guarantee?
No. You can claim SEG payments with solar panels alone, as long as you have an MCS certified system and a smart meter. A battery simply changes how much you export.
Last updated: June 2026
Disclaimer: This article is for informational purposes only. Energy savings estimates are based on industry averages and may vary depending on your property, energy usage, system size, and electricity tariff. We recommend obtaining a personalised quote for accurate savings estimates. Energy Solutions NW is part of the Blue Rock Energy network. MCS certified. NICEIC approved.
