Alectrona
Commercial solar panels · over 50 kWp · outside MCSDMEGC Solar commercial solar panels come from a China-headquartered module maker. It is a BloombergNEF Tier 1 manufacturer (Q1 2026); we re-verify the live quarter for the exact module before contract.
These are representative example reviews, not yet-collected customer feedback. They are written to illustrate the kind of feedback Alectrona aims to earn and are shown as design placeholders while we gather and verify reviews from our first commercial clients. Alectrona is the commercial solar trading brand of RVTC LTD.
What set Alectrona apart was the documented design pack. We had quotes from three installers, but only Alectrona handed us a full set of drawings, a single-line diagram and a design referencing BS 7671 and the G99 connection process. The whole thing read like an engineering submission rather than a sales brochure. Our M&E consultant reviewed it and signed it off without a single query. That gave the board the confidence to release the capital.
Other firms priced our roof off a satellite image and a desktop guess. Alectrona flew an in-house drone survey, fully insured and flown by a qualified commercial drone pilot, and built a 3D model of the actual roof. It picked up plant, vents and a parapet line that a flat aerial photo had completely missed, which changed the panel layout. I would rather find that out at design stage than on the day the scaffold goes up. The accuracy of that survey is the reason I trusted everything that followed.
As a finance director I was wary of being oversold a system bigger than we could use. Alectrona modelled the array against our actual half-hourly consumption data rather than an annual total, so it is sized to what we genuinely draw on site during the day. They were honest that exporting surplus is worth far less than self-consumption, and built the design around that. The capital case stacked up because the engineering was honest, not because the numbers were inflated.
We were undecided between buying outright, leasing and a PPA. Alectrona laid out all three side by side with the pros and cons of each against our balance sheet, instead of pushing the one that pays them best. They were clear about where a PPA makes sense and where capex wins, and pointed us at our own accountant for the tax treatment. The survey and design took a little longer than I expected, but the thoroughness was worth the wait. Genuinely consultative.
The install crew were tidy and well run, and worked to a clear CDM 2015 plan with a proper site induction and RAMS. What impressed me most was the handover. We received a full commissioning pack with the IEC 62446-1 test results, certification, O&M documentation and an as-built record for our maintenance team. As the people who have to live with this asset for the next twenty years, having that paperwork in order matters enormously. Nothing was left loose.
I expected the usual hard sell and got the opposite. After surveying our site Alectrona told us one roof section was not worth covering because of shading, and that a smaller, well-sited array was the better investment than filling every square metre. There was no commission-driven upselling and no pressure. For a six-figure capital project, that straight talk is exactly what you want from the people advising you. We will be using them again on our second site.
A well-distributed UK commercial-rooftop brand, the solar division of the Shenzhen-listed Hengdian Group DMEGC. It is a BloombergNEF Tier 1 manufacturer (Q1 2026), has been on the BNEF list for around six consecutive years, and is a Kiwa PVEL Top Performer for the fifth consecutive year. Its PV ModuleTech grade is A, so we do not claim an AAA or AA grade, and we keep its separate S&P Global Tier 1 status distinct from the BloombergNEF list. We re-verify the live BNEF quarter for the exact module before contract.
DMEGC Solar earns a place on a commercial roof as a well-distributed, bankable value brand backed by a long-standing industrial parent. On bankability we are precise. DMEGC is on the BloombergNEF Tier 1 PV module maker list for Q1 2026 and has held a place for around six consecutive years, which is the financing track record lenders and funders look for on a larger scheme. Tier 1 measures financeability rather than field performance, so we read it alongside independent reliability evidence and re-verify the live quarter for the exact module before contract. We also keep its separate S&P Global Tier 1 standing distinct from the BloombergNEF list, because they are different schemes assessing different things.
It suits projects where the commercial case favours a settled, well-stocked UK supply route and a competitive module price: larger, simpler arrays on roofs with the area and the structural headroom to carry a conventional module count. Where roof geometry, shading or load points to a different answer, such as a constrained roof where a premium high-efficiency panel earns its place, we specify a different brand. The choice follows the survey and the PV*SOL model rather than a badge, and we set out why DMEGC fits your site, or why it does not, in the written specification.
We do not lead with a single DMEGC flagship SKU on this page, because the right module for a given roof is a survey decision rather than a catalogue pick, and our registry does not fix a single DMEGC series as the one we always reach for. The exact series, wattage, dimensions and efficiency for your array are confirmed against the current manufacturer datasheet once the roof is surveyed and the layout is fixed. That matters for roof fit: the module footprint sets how many panels a roof carries, where the walkways and setbacks fall, and how the dead load is distributed, so we size the array around the structure rather than around a nameplate figure.
The cell technology, output and warranty for the specified DMEGC module are read straight from that datasheet at the design stage and held in your specification, so the panel that arrives on site matches the one priced and modelled. Larger-format bifacial double-glass modules also pick up rear-side gain on reflective commercial roofs, which the yield model accounts for where the chosen module supports it. How the mainstream crystalline-silicon technologies compare, and which one best fits a warm summer roof or a shaded elevation, is set out in our guide to TOPCon, HJT and PERC, and we use that comparison to justify the module we put forward rather than to lead with a marketing line.
Warranty is confirmed from the datasheet for the exact module, before contract. Our brand registry does not record a warranty term for DMEGC, so we will not quote a year we cannot evidence; we read the product and performance warranty back to you in writing from the current manufacturer datasheet for the module specified, then hold those terms in your specification. The corporate backing behind that cover is the Shenzhen-listed Hengdian Group DMEGC, and we name the solar division precisely so the standing behind the warranty is clear, rather than leaning on the wider magnetics parent.
On reliability we cite independent evidence alongside bankability. DMEGC is a Kiwa PVEL Top Performer for the fifth consecutive year, an independent outdoor and accelerated-stress test record that sits separately from financeability, and it carries an EUPD Top Brand market recognition. For a system above 50 kWp, which sits outside the domestic MCS scheme, assurance comes from the engineering: design and installation to BS 7671, commissioning and verification to IEC 62446-1, a G99 connection agreed with the distribution network operator, CDM 2015 duties through the project, and a structural survey confirming the roof carries the array. The same non-MCS quality stack applies to every brand we specify.
MCS does not cover systems this size, so the rigour is what you rely on instead. These are the component-level standards we hold on every install, at commercial scale.
MC4 plug-and-socket connectors are one of the most common failure points in the UK installed base, and the field-made ones are where the risk lives. Every connector we crimp on site gets a sealed ArcBox enclosure: weatherproof, UV-stable, and proof against the arcing-on-corroded-pins failure behind many rooftop PV fires. Diagnosed in real time through our sister company, Solar Tech Support.
A commercial array is a large metal structure on an exposed roof, wired straight into your distribution board. We earth and bond every array to BS 7671 and fit the surge protection that stands between a lightning transient or a grid spike and your inverters and switchgear. It protects the asset and the building it feeds, and it is built into the base design on every install.
Our Qualifying Supervisor, a fully AM2-trained electrician, personally reviews the install report on every job before commissioning sign-off: photos, test certificates, torque-check log and commissioning data, all filed and checked. We are an engineering company first, so the installer never signs themselves off.
Last updated July 2026
Tell us about your building and your electricity use. We will survey the roof, model it in PV*SOL, and specify a bankable module with the scheme, grade and quarter named.
