<p>Based in Plymouth, Callidus Trade provides solar panel installation, battery storage to homeowners and small commercial sites across England.</p><p>The public Google business listing shows 412+ reviews at an average of 4.9★. We recommend reading both the most recent reviews and the lowest-rated ones — the pattern of complaints is more informative than the average score.</p><p><strong>Services include:</strong> Solar panel installation, Battery storage.</p><p>Before signing a contract with Callidus Trade, check three independent registers: the MCS Certified register for installer status, RECC or HIES for consumer protection cover, and Companies House for active company status and recent accounts. EnergyRanked does not verify these credentials on your behalf — we surface the third-party signals (reviews, public listings, web presence) and link you to the registers where you can verify yourself.</p><p>Registered address: Unit 3 & 4, Callidus Trade, Swift Industrial Estate, Greenhill Way, Plymouth TQ12 3SH.</p><p>Use the verification checklist and FAQs below as a starting point. The questions you should ask any installer before paying a deposit are the same — what's on this page should help you make a more confident, informed choice.</p>
Based in Plymouth, Callidus Trade provides solar panel installation, battery storage to homeowners and small commercial sites across England.
The public Google business listing shows 412+ reviews at an average of 4.9★. We recommend reading both the most recent reviews and the lowest-rated ones — the pattern of complaints is more informative than the average score.
Services include: Solar panel installation, Battery storage.
Before signing a contract with Callidus Trade, check three independent registers: the MCS Certified register for installer status, RECC or HIES for consumer protection cover, and Companies House for active company status and recent accounts. EnergyRanked does not verify these credentials on your behalf — we surface the third-party signals (reviews, public listings, web presence) and link you to the registers where you can verify yourself.
Registered address: Unit 3 & 4, Callidus Trade, Swift Industrial Estate, Greenhill Way, Plymouth TQ12 3SH.
Use the verification checklist and FAQs below as a starting point. The questions you should ask any installer before paying a deposit are the same — what’s on this page should help you make a more confident, informed choice.
Fill out the form below and Callidus Trade will contact you with a customized solar quote.
Frequently asked questions
What questions should I ask Callidus Trade before booking a survey?
At minimum: ask for a written quote breaking out parts vs labour; the installer's MCS certificate number on the quote (not just a logo); workmanship and panel warranty terms; expected lead time from deposit to install; and whether they handle the DNO/G99 application. At time of indexing the public Google listing showed 412 reviews at 4.9★ which is useful context but not a substitute for paperwork. Get everything in writing before transferring a deposit.
What warranty does Callidus Trade typically offer?
UK solar panel installation installations carry three separate warranties: a panel/equipment manufacturer warranty (commonly 10-25 years on solar PV), an inverter or heat-pump warranty (commonly 10-12 years), and a workmanship warranty from the installer (commonly 2-10 years). Ask Callidus Trade for the written warranty bundle — the workmanship warranty matters most because it covers leaks, fixings, and electrical install quality.
How do I verify Callidus Trade is MCS-certified for solar installations in Plymouth?
MCS membership is the standard for UK solar installers. Open the public register at mcscertified.com and search by the trading name 'Callidus Trade'. If Callidus Trade hold MCS, the register will show the certification scope (PV, battery, heat pump etc.) and certificate number. EnergyRanked does not verify their MCS status independently — we link out so you can confirm directly — the company website (callidus.shop) is a useful starting point.
How can I check Callidus Trade on Companies House?
Open find-and-update.company-information.service.gov.uk and search for 'Callidus Trade' (or the registered name on their quote — these can differ from the trading name). Look at: company status (must be Active), the most recent confirmation statement, last accounts filed, and the registered office. A registered office that doesn't match the Plymouth address on this listing, or accounts overdue, are both worth asking about before paying a deposit.
Does Callidus Trade offer free site surveys before quoting?
Most reputable UK installers — including most Plymouth-area firms — offer a free desktop survey followed by a paid or no-cost roof inspection. Callidus Trade's specific policy isn't published on EnergyRanked; ask when you make initial contact — the company website (callidus.shop) is a useful starting point. A red flag would be any installer who quotes for a solar panel installation install without ever physically seeing the roof or property.
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