Smart Export Guarantee for Cardiff businesses
Cardiff businesses installing commercial solar use the Smart Export Guarantee to capture income from electricity exported to the grid — typically £900-£3,500 per year on a 100kWp system depending on self-consumption rate and supplier tariff.
Smart Export Guarantee for Cardiff businesses
| Headline value | 3p-15p per kWh exported (2026 tariffs) |
| Eligibility | Solar PV systems up to 5MWp; MCS certified up to 50kWp |
| Typical benefit | £900-£3,500 annual SEG income on a 100kWp commercial system |
| Regional context | Wales — Cardiff |
The Cardiff funding stack
Cardiff commercial solar projects typically combine Smart Export Guarantee with:
- Other UK-wide reliefs: AIA (if not using Full Expensing), Smart Export Guarantee, REGO sales above 50kWp
- Regional schemes: Business Wales Flexible Investment Fund (Development Bank of Wales), Welsh Government Energy Service
- Sector-specific grants: See the sectors hub for IETF, PSDS, FETF and charity-sector funding routes
- Finance routes: Asset finance, operating lease, PPA — see finance hub
Cardiff commercial context
Cardiff businesses typically operate in the Wales commercial energy market with import rates around £0.22-£0.30 per kWh in 2026 — making the value of Smart Export Guarantee compelling regardless of sector. The Cardiff location guide covers council net zero plans, industrial estates and regional scheme administrators in detail.
Next steps for Cardiff businesses
- Read the full Smart Export Guarantee guide for eligibility, application process, worked examples and watch-outs.
- Browse the Cardiff location guide for regional scheme specifics.
- Compare cost & payback for your system size at the cost hub.
- Run the eligibility calculator — 60 seconds to confirm exactly which schemes apply to your business.
Free eligibility check · Cardiff
Tell us your business — we map every active 2026 grant to your sector, size and postcode.
Smart Export Guarantee in Cardiff · FAQs
Does Smart Export Guarantee apply to Cardiff businesses in 2026?
Yes. Smart Export Guarantee is a UK-wide scheme administered by Ofgem-licensed energy suppliers. Cardiff businesses access Smart Export Guarantee on the same eligibility basis as any other UK location. See the full Smart Export Guarantee guide.
How does Smart Export Guarantee stack with Cardiff regional grants?
Cardiff businesses can combine Smart Export Guarantee with regional schemes specific to the Wales region — most prominently Business Wales Flexible Investment Fund (Development Bank of Wales), Welsh Government Energy Service. Stacking is subject to subsidy control rules (£315k cumulative ceiling over 3 years) but most projects fall comfortably within the cap.
How much can a Cardiff business save?
£900-£3,500 annual SEG income on a 100kWp commercial system. Combined with Cardiff's typical commercial electricity rate (£0.22-£0.30/kWh) and the available regional schemes, total project economics deliver 3-6 year post-tax payback for most Cardiff commercial solar projects.
What's the application process from Cardiff?
Apply directly to your chosen Ofgem-licensed SEG supplier with system commissioning evidence — typical 4-6 weeks to first payment.
Where are Cardiff commercial solar installations concentrated?
Cardiff commercial solar is most active across the city's industrial estates and business parks. See the dedicated Cardiff location guide for industrial estate breakdowns and council climate framework details.
Check if your Cardiff business qualifies
Free 60-second eligibility check confirms whether Smart Export Guarantee applies to your business and how to stack it with Wales regional schemes.
Free eligibility check Or call 0800 246 1132