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"Around 61% of UK homeowners report being worried about misleading solar offers. This guide tells you exactly what to look for, what to ask, and when to walk away.", "image": "https://alliantenergy.co.uk/assets/installer-D2bbZsjM.jpg", "author": { "@type": "Person", "name": "Alliant Energy Team", "url": "https://alliantenergy.co.uk/about" }, "reviewedBy": { "@type": "Person", "name": "MCS Registered Engineer", "jobTitle": "MCS Registered Engineer" }, "publisher": { "@type": "Organization", "name": "Alliant Energy", "url": "https://alliantenergy.co.uk", "logo": { "@type": "ImageObject", "url": "https://alliantenergy.co.uk/logo.png" } }, "datePublished": "2026-01-15", "dateModified": "2026-05-19" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Is a local installer better than a national one?", "acceptedAnswer": { "@type": "Answer", "text": "Not automatically — but local installers often have better survey response time, regional expertise on planning/DNO, and accountability within their community. National installers may have more hardware purchasing power. MCS certification, own teams and track record matter more than geography." } }, { "@type": "Question", "name": "How do I know if online reviews are genuine?", "acceptedAnswer": { "@type": "Answer", "text": "Look across multiple platforms (Google, Trustpilot, Which?), check reviews span time rather than appearing in batches, and look for specific install detail rather than generic positivity. Identically phrased five-star reviews are a red flag." } }, { "@type": "Question", "name": "Should I use a comparison site to find an installer?", "acceptedAnswer": { "@type": "Answer", "text": "They earn referral fees, which creates an incentive to favour certain companies regardless of quality. Use as a starting point but verify credentials independently. Alliant does not pay referral fees to comparison sites." } } ] } ] --- [![Alliant Energy — Renewable Energy Solutions](/__l5e/assets-v1/3bd22195-cc6e-43e6-b5ff-5a808ce292d3/alliantenergyltd-2.svg)](/) [Home](/)[About](/about-us) [Services](/services) [Guides](/guides)[Case Studies](/case-study)[![Levelise](/__l5e/assets-v1/59fd362e-361a-47d7-ad1f-65e9beeb5289/levelise-logo.webp)](/guides/levelise-hub-explained) [01282 501589](tel:01282501589)[Get a Quote →](/quote) Spoke guide · Choosing an installer # How to Choose a Solar Panel Installer in the UK: The No-Nonsense Guide Around 61% of UK homeowners report being worried about misleading solar offers. This guide tells you exactly what to look for, what to ask, and when to walk away. By **Alliant Energy Team**· reviewed by MCS Registered Engineer Last updated 19 May 2026 [See Alliant's Credentials](/about-us) [Get a Quote](/quote) On this page - [Start with MCS](#mcs) - [Other accreditations](#accred) - [Own teams vs subcontractors](#teams) - [Company stability](#stability) - [Comparing quotes](#quotes) - [The one revealing question](#question) - [FAQ](#faq) Ready to act? Free quote in one working day. [Get a Quote →](/quote) The UK solar industry has a trust problem. There are installers operating without proper certification, using high-pressure sales tactics and overstating returns. Here's how to filter them out. ## Start with MCS certification — it's non-negotiable The Microgeneration Certification Scheme (MCS) is the UK's quality standard for small-scale renewable installs. Without MCS certification your system **cannot earn Smart Export Guarantee (SEG) payments, cannot access government grants, and manufacturer warranties may be invalid**. That certificate is worth thousands over the system's lifetime. Verify directly at _mcscertified.com/find-an-installer_. Any installer who suggests MCS isn't necessary, or that they can "sort it out afterwards", should be immediately disqualified. Alliant is MCS registered You can verify our certification at mcscertified.com. We issue an MCS installation certificate to every customer within days of commissioning. ## Look for additional accreditations Accreditation What it means for you NICEIC Approved Electrical installation meets safety standards. Annual inspections. Self-certification under Part P — no local authority sign-off needed. TrustMark Registered Government-endorsed quality scheme with formal complaints process, consumer redress and independent oversight. HIES Member Deposit protection up to £2,000, free disputes resolution, and a guarantee if the installer goes out of business. RECC Member Renewable Energy Consumer Code — alternative to HIES with similar protections. Which? Trusted Trader Consumer review and vetting scheme. Less rigorous than NICEIC/TrustMark but adds peer transparency. Alliant's installers are MCS-registered, and we hold NICEIC, TrustMark and HIES — listed on our site because they're real credentials with real implications, not just logos. ## Own installation teams vs. subcontractors Ask explicitly: will the installation be carried out by your own employees or by subcontractors? Installers using their own teams are accountable for the work. Subcontracting isn't automatically bad — but for smaller local jobs, an installer who owns their team typically provides better continuity and aftercare. Alliant installs using our own engineers — we don't broker jobs to subcontractors. ## Company longevity and financial stability Solar systems last 25+ years. The installer should still exist when you need warranty work in year 8. Check: - How long they've been trading (free at companieshouse.gov.uk) - A registered address and landline — not just a mobile - Recent verifiable reviews on Google or Trustpilot - Limited company vs sole trader (both legitimate; a Ltd adds accountability) ### Want to verify Alliant in 5 minutes? Our installers' MCS registration, plus our NICEIC, TrustMark, HIES and Companies House records, are all publicly searchable. [See Our Credentials](/about-us) [Get a Quote](/quote) ## Get at least three quotes — and compare properly Don't compare on price alone — compare what's included: panel brand and wattage; inverter brand and type (hybrid vs string); battery brand and capacity; scaffolding; DNO application; MCS certification; monitoring app; warranty terms for each component. A quote that's £500 cheaper but uses an unknown-brand inverter with a 2-year warranty and no battery is _not_ the same product as a Fox ESS quote with a 10-year warranty and 5.76 kWh of battery storage. ## One conversation that tells you everything The single most revealing question: **"Is there any reason a solar system might not be the right choice for my property?"** A good installer will mention shading, roof orientation, current usage, whether a battery is justified. A bad installer will tell you solar is perfect for every property and change the subject. ## Frequently asked questions ### Is a local installer better than a national one? Not automatically — but local installers often have better survey response time, regional expertise on planning/DNO, and accountability within their community. National installers may have more hardware purchasing power. MCS certification, own teams and track record matter more than geography. ### How do I know if online reviews are genuine? Look across multiple platforms (Google, Trustpilot, Which?), check reviews span time rather than appearing in batches, and look for specific install detail rather than generic positivity. Identically phrased five-star reviews are a red flag. ### Should I use a comparison site to find an installer? They earn referral fees, which creates an incentive to favour certain companies regardless of quality. Use as a starting point but verify credentials independently. Alliant does not pay referral fees to comparison sites. Three ways to get started ## Ready to find out what solar saves you? Get a tailored quote in one working day. No obligation. No hard sell. Speak to a renewable energy engineer — not a salesperson — at a time that suits you. [Get a Quote → ](/quote) [Request a Callback →](/request-callback) [Download Brochure →](/brochure) Accreditations ## Certified, registered, and insured. Every time. MCS certification isn't a box-ticking exercise — it qualifies your system for Smart Export Guarantee payments and government grants. Our installers are also NICEIC-approved and TrustMark-registered, and every install is fully insured. ![Citation ISO Certification: ISO 9001 quality management, ISO 14001 environmental management and ISO 45001 occupational health and safety](/__l5e/assets-v1/180183cd-e6fd-4b0a-984c-83e6a41390d7/accreditations-iso.jpg) ![Alliant Energy — Renewable Energy Solutions](/assets/logo-IFrgP5Dc.png) Renewable energy & energy-saving specialists. MCS-registered solar PV, battery storage, heat pumps and EV charging across the UK. #### Quick Links - [Home](/) - [About Us](/about-us) - [Services](/services) - [Case Studies](/case-study) - [Areas We Cover](/solar-panel-quotes-north-west) - [Contact](/contact) - [Privacy Policy](/privacy) - [Terms & Conditions](/terms) #### Services - [Solar for Homes](/services/solar) - [Commercial Solar](/services/commercial-solar) - [Battery Storage](/services/battery-storage) - [Air Source Heat Pumps](/services/heat-pumps) - [EV Charging](/services/ev-charging) - [Energy Saving Advice](/services/energy-saving-advice) #### Contact - [01282 501589](tel:01282501589) - [info@alliantenergy.co.uk](mailto:info@alliantenergy.co.uk) - Unit 214 Northlight Industries, Pendle Road, Brierfield, Nelson BB9 5FL [Get a Quote](/quote)[Brochure](/brochure) Alliant Energy Ltd is an Introducer Appointed Representative (Financial Services Register No. 1020779) of Phoenix Financial Consultants Limited (Phoenix). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks. © 2026 Alliant Energy Ltd. All rights reserved. [Privacy Policy](/privacy)[Terms & Conditions](/terms) MCS Registered · TrustMark · NICEIC [Chat with AI](/chat) [Call back](/request-callback) [Get a Quote](/quote) [Get a Brochure](/brochure) [Get a Quote](/quote) [Chat with AI](/chat)