Why UK Solar Referral Offers Matter: The Competitive Landscape in 2026
UK solar and heat pump installers compete on three dimensions: upfront cost reduction, post-installation rewards, and long-term energy savings integration—and referral schemes are increasingly the primary lever for new customer acquisition in a crowded market. Octopus Solar, EDF Energy, British Gas, and Eon each operate permanent or seasonal referral programmes, but the structure, value, and delivery mechanism vary significantly, creating genuine confusion for UK homeowners comparing quotes. A typical UK household installing a 4–5kWp solar system with battery and heat pump faces installation costs of £18,000–£28,000; a £100–£1,500 referral bonus or promotional discount can represent 0.5–8% cost reduction, making the choice of installer material to total project value.
The referral landscape has shifted since 2024. Most UK solar installers historically offered time-limited seasonal promotions (e.g., "£500 off if you install by 31 March"). Octopus Solar, however, introduced a permanent £100 dual-reward referral programme with no expiry date, creating a reliable, always-available incentive. EDF and British Gas have responded with hybrid models: permanent base referral bonuses (£100–£200) plus seasonal top-ups (additional £300–£1,000 during peak demand periods). Eon's referral structure is less transparent, varying by region and installer partner. This fragmentation means you cannot assume one provider's offer is "better" without comparing your specific postcode, system type, and installation timeline.
Octopus Solar vs EDF Energy: Referral Rewards & Installation Speed Compared
Octopus Solar's £100 VISA gift card referral is delivered post-installation (within 90 days of MCS certification), while EDF Energy's referral bonuses are typically £500–£1,500 discounts applied at quote stage, making EDF's offer appear larger but with critical timing and condition differences. Octopus Solar's reward is permanent and available year-round; EDF's larger bonuses are seasonal, typically offered April–September during peak installation demand, and are subject to system size minimums (e.g., £500 bonus on systems under 5kWp, £1,500 on systems 5kWp+). Installation timelines also diverge: Octopus Solar averages 8–14 weeks from approved quote to handover, while EDF typically requires 10–16 weeks, particularly during summer months when installer availability is constrained.
The critical difference lies in reward certainty and delivery. Octopus Solar's £100 is guaranteed to both the new customer and the referrer, provided the referral link is clicked before quote submission and the system reaches MCS certification. EDF's larger discounts are conditional on quote approval, system size, and regional eligibility—a customer in a less-serviced postcode may receive only £200 instead of £1,500, or no discount at all if EDF determines the installation is not viable. EDF's discounts are also applied to the quote price (reducing your upfront cost), whereas Octopus Solar's reward is delivered post-installation as a gift card. For customers seeking immediate cost reduction, EDF's approach is more attractive; for those comfortable with post-completion rewards and valuing certainty, Octopus Solar's permanent £100 is more reliable.
Smart Export Guarantee rates—the price EDF and Octopus pay you for excess solar exported to grid—are competitive between the two. Octopus Energy's SEG rate is typically 15–20p/kWh as of 2026, among the highest in the UK market. EDF's SEG rate is typically 12–16p/kWh, slightly lower. This difference compounds over time: on a system exporting 30% of annual generation (typical for a 4kWp system with battery), the Octopus rate advantage translates to £30–£50 additional annual income versus EDF. Over a 25-year system lifespan, this SEG rate difference is material (£750–£1,250 cumulative advantage to Octopus), potentially offsetting EDF's larger upfront discount.
Octopus Solar vs British Gas: Referral Structure & Ecosystem Integration
British Gas's referral programme mirrors Octopus Solar's dual-reward structure but with regional variation and lower transparency: British Gas typically offers £100–£200 referral bonuses to both new customers and referrers, but the exact amount depends on your postcode, system type, and current promotional calendar. Unlike Octopus Solar's published, permanent £100 offer, British Gas referral bonuses are not clearly advertised on their website and must be discovered through quote requests or third-party referral sites. This opacity creates friction—you cannot compare offers confidently before committing to a quote, whereas Octopus Solar's terms are published upfront.
Installation timelines are similar: British Gas averages 10–14 weeks, comparable to Octopus Solar's 8–14 weeks. However, British Gas's post-installation support is often cited as slower than Octopus Solar's. British Gas handles both installation and energy supply (like Octopus Solar), but customer escalations for post-installation issues (warranty claims, monitoring app problems, tariff queries) can take 5–10 working days for response, whereas Octopus Solar's integrated team typically responds within 3–5 working days. For customers prioritising seamless post-installation experience, Octopus Solar's vertically integrated model offers a slight advantage.
British Gas's Smart Export Guarantee rate is typically 13–17p/kWh, slightly lower than Octopus Solar's 15–20p/kWh range. Over a 25-year system lifespan, this SEG rate difference (2–3p/kWh) translates to £500–£750 cumulative disadvantage versus Octopus Solar, offsetting British Gas's marginally higher referral bonus (£100–£200 vs Octopus's £100). The net financial advantage to Octopus Solar is modest but measurable for long-term value-focused customers.
Octopus Solar vs Eon: Referral Transparency & Regional Availability
Eon's referral programme is the least transparent of the four major UK renewable installers, with no published referral scheme on their main website and no standardised bonus structure across regions. Eon's renewable installation business operates through regional partnerships and franchised installers, meaning referral bonuses (if available) are negotiated locally and vary from £0 to £500+ depending on installer and postcode. This decentralisation creates significant uncertainty: you may receive a £300 referral bonus in one postcode and £0 in another, even within the same city. Octopus Solar, by contrast, offers the same £100 reward nationwide (subject only to postcode coverage eligibility).
Installation timelines for Eon are typically 10–14 weeks, comparable to Octopus Solar and British Gas. However, Eon's post-installation support is fragmented across regional partners, meaning warranty claims and technical issues may be handled by the local installer rather than Eon directly. This can result in slower resolution times and inconsistent service quality. Octopus Solar's centralised support model (all issues routed to Octopus Energy) typically resolves faster.
Eon's Smart Export Guarantee rate is typically 12–15p/kWh, the lowest among the four providers. Combined with Eon's opaque referral structure and fragmented post-installation support, Eon represents the weakest value proposition for UK homeowners seeking certainty and long-term integration. Eon is best suited to customers in postcodes where local installers offer competitive upfront discounts (negotiated directly) and where you have existing Eon energy supply and prefer to consolidate with one provider.
Referral Rewards Comparison Table: Octopus Solar vs EDF, British Gas & Eon
| Provider |
Referral Reward (New Customer) |
Referral Reward (Referrer) |
Delivery Mechanism |
Timeline to Receipt |
Availability |
SEG Rate (p/kWh) |
| Octopus Solar |
£100 VISA gift card |
£100 VISA gift card |
Post-installation, email delivery |
Within 90 days of MCS cert |
Permanent, year-round |
15–20 |
| EDF Energy |
£500–£1,500 quote discount |
£200–£500 referral bonus |
Quote stage discount + post-install bonus |
Immediate (quote) + 4–8 weeks (bonus) |
Seasonal (Apr–Sep typically) |
12–16 |
| British Gas |
£100–£200 (regional variation) |
£100–£200 (regional variation) |
Post-installation, delivery method varies |
Within 60–90 days of installation |
Permanent but non-transparent |
13–17 |
| Eon |
£0–£500 (regional, negotiated) |
£0–£300 (regional, negotiated) |
Varies by local installer |
Varies (30–120 days) |
Non-standardised, regional only |
12–15 |
Note: SEG rates, referral bonuses, and availability are current as of 8 June 2026 but subject to change. Always confirm current terms with each provider before committing to a quote. Regional variation is significant for EDF, British Gas, and Eon; postcode eligibility checks are essential before comparing offers.
Which Offer Delivers Best Value? The Verdict for 2026
Octopus Solar offers the best referral value for UK homeowners seeking certainty, transparency, and long-term integration, particularly those in eligible postcodes prioritising ecosystem simplicity and competitive Smart Export Guarantee rates. The £100 permanent dual-reward structure, published upfront with no regional variation, eliminates the guesswork that plagues EDF, British Gas, and Eon comparisons. The post-installation delivery mechanism (within 90 days of MCS certification) is reliable and automatic, requiring no additional steps once your system is commissioned. Combined with Octopus Energy's competitive 15–20p/kWh SEG rate and vertically integrated energy supply, Octopus Solar offers the strongest long-term value proposition for new customers installing solar, battery, or heat pump systems in 2026.
However, Octopus Solar is not universally optimal. If you prioritise maximum upfront cost reduction and can secure EDF's seasonal £500–£1,500 discount (April–September peak season), EDF's offer may deliver lower net cost despite lower SEG rates, particularly for large systems (5kWp+) where EDF's bonuses scale. If you have existing British Gas energy supply and value consolidated billing, British Gas's regional referral bonuses (£100–£200) may be sufficient, though you should request a postcode-specific quote to confirm the exact bonus before committing. If you are in a postcode where Eon's local installer offers a competitive upfront discount negotiated directly, Eon may be viable, but the lack of transparency and fragmented support make it a higher-risk choice.
For most UK homeowners in 2026, Octopus solar offers the best referral value when evaluated across referral certainty, long-term energy savings integration, and post-installation support quality. The £100 permanent reward, combined with Octopus Energy's competitive SEG rate and real-time monitoring through the Octopus Home Mini app, creates a compelling package for first-time renewable installers seeking simplicity and long-term savings. Request quotes from all four providers in your postcode, compare the final installed cost (after all discounts and referral bonuses), and evaluate the SEG rate lock-in period—this three-factor analysis will reveal the true winner for your specific situation.
About This Article
This article was written by the UseMyCode editorial team and last reviewed on 8 June 2026. UseMyCode independently verifies every referral link and discount code before publication. This page may contain affiliate links — see our editorial policy for details.
