“Solar installation including 8 panels, inverter and battery. Experience was very positive - from the initial survey it was clear that high attention to detail was being paid. They were very good at taking us through our options and weren't upselling us on more expensive options. We found the prices to be very competitive. When it came to the work, they were on time, efficient and great to deal with. The internal works were thoroughly discussed, as part of the job entails creating a route for the new cables to run. Work itself inside the house was very tidy with minimal mess.”
Public evidence profile
JD Allen Solar Ltd
Review quality
No reviews in 12 months
Credentials & registries
5 credentials shown
MCS certification
Certified for Battery Storage, Solar PV
Trust Score
46out of 100
46 out of 100, with a caution: newest review we found is from April 2024. Weigh that age against the score.
- Rated 5.0 from 7 reviews
- 5 credentials shown
Newest review April 2024
How this score is worked out
Rating5.0 / 5
Review volumeLow · 7
Independent sources1 independent public source
Credentials5 credentials shown
How this score is made up
What customers say22.9 of 60
Independent checks16.1 of 30
Track record6.4 of 10
See the independent checks
- Licences and credentials5 of 8.3
- Ways to reach them7 of 8.3
- Reviewed on more than one site0 of 6.2
- Registered company details4.1 of 4.1
- Photos of their work0 of 2.1
- Industry recognition0 of 1
Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.
Trust at a glance
4 checksWhat we can verify about JD Allen Solar Ltd
Each card sums up one thing we can check from public sources. Open it for the full detail and the named source. This is evidence context, not a guarantee.
Review qualityNo reviews in 12 monthsSee detail →Credentials & registries5 credentials shownSee detail →MCS certificationCertified for Battery Storage, Solar PVSee detail →Companies HouseActive incorporated businessSee detail →
See the full verification checklist for JD Allen Solar Ltd →Reviews · public evidence
What customers say
These reviews are published independently on the named public source below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
5.0out of 5
5 stars7
4 stars0
3 stars0
2 stars0
1 star0
Where these reviews are published
- Which? Trusted Traders7 reviews · 5.0 avg
Highlights
“Solar system fitted. Successfully resolved some major issues I had with the previous fitter who walked out on the job and left me in a very difficult situation. Very professional and hardworking. Huge contrast to what I been left with previously. Pity I didn't come to JD Allen first. Highly recommended.”
“I engaged JD Allen on behalf of a community group looking to get some solar panels installed at a facility used by local volunteers. They were enthusiastic, despite the project throwing up some complexities, which I think speaks to both their community orientation and their professionalism. All of JD Allen's staff were responsive, courteous and helpful from the first site visit to the final invoice and the job got done to a very high standard and we have since engaged them for further work on our site!”
Detailed reviews
Endorsement Reference
Solar installation including 8 panels, inverter and battery. Experience was very positive - from the initial survey it was clear that high attention to detail was being paid. They were very good at taking us through our options and weren't upselling us on more expensive options. We found the prices to be very competitive. When it came to the work, they were on time, efficient and great to deal with. The internal works were thoroughly discussed, as part of the job entails creating a route for the new cables to run. Work itself inside the house was very tidy with minimal mess.
Endorsement Reference
Solar system fitted. Successfully resolved some major issues I had with the previous fitter who walked out on the job and left me in a very difficult situation. Very professional and hardworking. Huge contrast to what I been left with previously. Pity I didn't come to JD Allen first. Highly recommended.
Endorsement Reference
I engaged JD Allen on behalf of a community group looking to get some solar panels installed at a facility used by local volunteers. They were enthusiastic, despite the project throwing up some complexities, which I think speaks to both their community orientation and their professionalism. All of JD Allen's staff were responsive, courteous and helpful from the first site visit to the final invoice and the job got done to a very high standard and we have since engaged them for further work on our site!
Endorsement Reference
Previously supplied
Endorsement Reference
They fitted a House-Battery and charger point for Electric car.
Read the other 2 detailed reviews on this pageShow fewer reviews
Endorsement Reference
JD Allen Engineering installed a complete Solar PV system including solar panels on the roof, inverter and battery in the attic. It included an Emergency Power Supply. I asked lots of questions about the design and the various installation options and Derek and his team responded timely and patiently. The installation then went as planned, they commissioned the system and explained all the newly installed devices. They also registered the new system with the various agencies. I've had the system now for 2 months and I'm very happy with it.
Endorsement Reference
14 PV panels installed together with inverter and storage battery
Local context
Rated 5.0, in line with the local average for electricians in Beckenham
Across 11 electricians in Beckenham, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Review quality check
Review recencyReview recency
How recently this business's reviews were left, kept separate from the star rating and the number of reviews.
No reviews from the last 12 months are shown.
Credentials and checks
Credentials, licences and vetting
Credentials and associations
5Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
- Certification number
- NAP-66930
- Source checked
- 11 Jul 2026
- Source reference
- 3779714
- Member since
- 2025
- Source checked
- 11 Jul 2026
- Source checked
- 25 Jun 2026
- Certification number
- NAP-66930
- Source checked
- 11 Jul 2026
- Source reference
- 00072671
- Source checked
- 11 Jul 2026
Renewable energy
MCS renewable energy certification
Battery StorageSolar PV
Certificate NAP-66930, checked by NAPIT.
Areas covered: East Midlands, London, South East, South West, West Midlands.
MCS is the government-recognised certification for renewable-energy installers, required to claim the Boiler Upgrade Scheme grant. It confirms what they're certified to install, not a review or a guarantee.
Companies House registration
ActiveActive incorporated business
JD Allen Solar Ltd is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.
Legal nameJD Allen Solar Ltd
Company number12152306
Incorporated
Registered activityElectrical equipment repair
Official checkOn the public register
Why this helps you judge trust: this trader is linked to a registered company with named people who are legally accountable for it, on an official register anyone can check, a layer of accountability an unregistered trader doesn't offer. Around 7 years on the register also points to an established business rather than a brand-new one.
Sources
4 named public sourcesWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Registers and membership directories
Check dates vary by source. Where we hold a date, the check shows it.
About
JD Allen Engineering are trusted solar panel installers in London and the South East, offering environmentally-friendly energy solutions across all of London, Bromley, Croydon, Surrey, and Kent. With a focus on reliability and sustainability, we specialise in delivering cost-effective solar photovoltaic installations for both residential and commercial properties. Our commitment to eco-conscious practices ensures that your energy needs are met with efficiency and environmental responsibility, paving the way for a greener future in the heart of the city.
Your own checks
What to check before you hire
Worth checking yourself
Only a few public reviews are shown. Ask for recent references you can contact.
Their public evidence comes from a single source. Look them up on another site before deciding.
Verify at the sourceCheck them yourself
Electrical work in homes in England & Wales should be done by a registered competent person who can self-certify it meets the Part P safety rules. Check they're on the official register.
Check the electrical registerIn England and Wales, notifiable electrical work (new circuits, a consumer unit, anything in a bathroom or kitchen) must by law be signed off under Part P of the Building Regulations. Confirm they will handle that.
Prefer an electrician registered with a government-approved competent-person scheme (NICEIC, NAPIT or ELECSA) so they can self-certify the work meets the wiring regulations.
Insist on the Electrical Installation Certificate (or Minor Works Certificate) when the job is done. It is your proof the work is safe and compliant, and you will need it if you ever sell.
Want an extra legitimacy check? Run the Cowboy Checker on JD Allen Solar Ltd before you contact them.
Run Cowboy Checker →Independent checks
About this business
A real, registered businessWe cross-checked Companies House: this business is officially registered for work that matches the electrician services it advertises - independent confirmation it's a genuine business set up to do this kind of work, not just a directory entry.
Good to know
Common questions about JD Allen Solar Ltd
Is JD Allen Solar Ltd a legitimate business?
JD Allen Solar Ltd has 7 independent public reviews, rated 5 out of 5. It is a registered business on Companies House, listed as active, and the public register shows no adverse status (no dissolution, insolvency or strike-off) against it. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about JD Allen Solar Ltd?
JD Allen Solar Ltd has 7 public reviews, averaging 5 out of 5. You can read the individual reviews and where each came from in the reviews section above.
How do I know JD Allen Solar Ltd's reviews are genuine?
JD Allen Solar Ltd's 7 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published, so you can open the source and read them yourself rather than trusting a single curated page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.
Is JD Allen Solar Ltd qualified and accredited?
We hold 5 independently sourced credentials for JD Allen Solar Ltd, including MCS, TrustMark, Which? Trusted Trader, Microgeneration Certification Scheme. Each is attributed to the body that issued it in the credentials section. For example, MCS is the government-backed standard for renewable-energy installers (heat pumps, solar), and what unlocks grants like the Boiler Upgrade Scheme.
Is JD Allen Solar Ltd a registered business?
JD Allen Solar Ltd is a registered business on Companies House (company number 12152306), incorporated 12 Aug 2019, listed as active. This confirms the legal registration of the business, not evidence of workmanship or service quality.
Is JD Allen Solar Ltd MCS-certified for renewable energy?
JD Allen Solar Ltd is MCS-certified for Battery Storage, Solar PV. MCS is the government-recognised certification for renewable-energy installers. It confirms what they are certified to install, not a review or a guarantee.