ScottishPower Solar Panels UK Review
ScottishPower is one of the UK's Big Six energy suppliers, owned by Spanish renewables giant Iberdrola. Its SmartPower brand offers solar panel installations across the UK, paired with ScottishPower's own Smart Export Guarantee (SEG) tariff. This review covers SmartPower's pricing, what's included, and how it compares to British Gas, E.ON, and independent installers.
Quick Answer
ScottishPower SmartPower installs solar panels nationwide through its own engineers and subcontractor network. A typical 4kWp + battery costs £11,000–£13,500, similar to British Gas and E.ON. ScottishPower's SmartGen SEG tariff pays a lower standard rate for non-customers, with premium tiers up to 15p/kWh for ScottishPower energy customers. Local MCS-certified installers typically price 15–20% lower for equivalent Tier 1 panels.
What is ScottishPower SmartPower?
ScottishPower is a UK energy supplier serving around 5 million customers. It is owned by Iberdrola, one of the world's largest renewable energy companies. ScottishPower's home-energy product range (solar, battery storage, EV chargers, heat pumps) is marketed under the SmartPower brand.
SmartPower solar installations include MCS-certified hardware and commissioning, integration with ScottishPower's SEG tariff, and a single-supplier relationship covering your electricity, solar, and (optionally) EV charging.
How much do ScottishPower solar panels cost?
| System | ScottishPower SmartPower | Independent MCS installer |
|---|---|---|
| 3 kWp solar only | £6,500–£8,000 | £5,700–£7,000 |
| 4 kWp solar only | £7,500–£9,500 | £6,600–£8,500 |
| 4 kWp + 5 kWh battery | £11,000–£13,500 | £9,600–£12,500 |
| 6 kWp + 10 kWh battery | £16,000–£19,500 | £14,500–£18,500 |
Prices include 0% VAT, which applies to all residential UK solar installations until 31 March 2027.
ScottishPower SEG tariff
ScottishPower offers its own Smart Export Guarantee tariff, called SmartGen, available to any UK homeowner with an MCS-certified solar system. You do not need to be a ScottishPower customer to sign up for the standard rate. As of 2026 the SmartGen rate sits at the lower end of the market for non-customers, while ScottishPower energy customers can access higher premium tiers of up to 15p/kWh. Rates have moved over the past year, so always confirm the current figure on ScottishPower's SEG page before signing up. For the full rate breakdown, see our Scottish Power export tariff review.
Comparable or higher SEG rates are available from Octopus (15p/kWh on Octopus Outgoing) and some community-owned schemes. See our full SEG comparison.
ScottishPower Solar pros and cons
Pros
- Financial stability: Iberdrola is one of the world's largest utilities
- Nationwide UK coverage
- Single supplier for electricity, solar, and EV
- SmartGen SEG premium tiers reach up to 15p/kWh for ScottishPower customers
- Experienced installer network
Cons
- 15–20% price premium vs local MCS installers
- Long quote-to-install lead times (6–10 weeks typical)
- Panel brand choice tied to current supplier contract
- Mixed customer service reviews across Trustpilot
- SEG rate lower than Octopus Outgoing
Frequently Asked Questions
Does ScottishPower install solar panels?
Yes. ScottishPower's SmartPower brand offers MCS-certified solar panel installations across the UK, typically through a mix of direct engineers and approved subcontractors.
How much do ScottishPower solar panels cost?
A typical 4kWp + battery installation costs £11,000–£13,500 through ScottishPower. Equivalent independent installers charge £9,600–£12,500.
What is the ScottishPower SEG rate?
ScottishPower's SmartGen tariff pays a lower standard rate to non-customers, while ScottishPower energy customers can access premium tiers of up to 15p/kWh. Rates have changed over the past year, so confirm the current figure on ScottishPower's SEG page. Any MCS-certified solar owner can apply for the standard tariff.
Do I have to be a ScottishPower customer to get solar from them?
No. SmartPower solar installations are available to anyone in the UK regardless of current electricity supplier. However, bundling with ScottishPower electricity is often marketed.
Are ScottishPower solar panels any good?
The panels themselves are Tier 1 equipment (typically Jinko, JA Solar, or Trina). Quality is not the concern; the decision usually comes down to price vs brand support trade-off.
ScottishPower vs British Gas solar: which is better?
The two offerings are broadly similar in price and specification, and both run their own SEG export tariffs. SEG rates change frequently, so compare the current published rates before deciding. For price-sensitive buyers, both are typically beaten by local MCS installers.
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Sources
- ScottishPower SmartPower: scottishpower.co.uk
- Ofgem, Smart Export Guarantee: ofgem.gov.uk
Last updated: August 2026
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
John Rooney is the founder of Solar Info and has been covering the UK solar energy market since 2023. He researches every battery and inverter brand against manufacturer datasheets, MCS and Ofgem data, and feedback from the MCS-certified installers in our directory before publishing.
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