# Selling surplus solar: the Smart Export Guarantee for business

The Smart Export Guarantee (SEG) requires larger energy suppliers to pay for surplus renewable electricity you export to the grid. For business solar it is a useful bonus, but the bigger value comes from using your own generation on site, where it replaces expensive grid power.

## How the SEG works

Under the SEG, eligible suppliers pay you a rate for each unit of surplus electricity you export. Rates vary by supplier, so it is worth comparing. Export earnings sit on top of the savings you make by using solar yourself.

## Self-consumption beats export

Every unit you use on site saves you the full grid price, which is almost always higher than the export rate. That is why commercial systems are sized around your own demand — export is the surplus, not the goal.

## Where battery storage fits

Battery storage lets you keep more of your generation for your own use rather than exporting it cheaply, increasing self-consumption and overall value.

## Frequently asked questions

**Should I size my system to maximise export?**

No. Using your own solar saves you the full grid price, which beats the export rate, so systems are sized around your on-site demand. Export is a useful bonus on genuine surplus.

**Who receives the export payments under a PPA?**

Arrangements vary by agreement. We explain clearly how self-consumption, savings and any export are treated in your specific proposal.

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Source: [Selling surplus solar: the Smart Export Guarantee for business](https://ppafunding.com/guides/smart-export-guarantee-for-business) · Author: PPA Funding team · Updated: 2026-07-30

PPA Funding is an independent introducer operated by DVC Group Ltd (Companies House 10462808), Shrewsbury — not the funder, the installer or the maintenance provider. The service is free to use; a commission may be earned from a partner at no extra cost. Content is educational and is not financial or tax advice.