Alectrona
Commercial solar panels · over 50 kWp · outside MCSREC commercial solar panels come from a Norway-headquartered module maker; a premium maker we position on its genuine merits, because we cannot source a current BloombergNEF Tier 1 listing for it.
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 premium heterojunction (HJT) manufacturer (Alpha and Alpha Pure-R series), owned by Reliance Industries since 2021, which underpins its financial backing. We position REC on its genuine merits: it was never a Silicon Module Super League member, and we do not claim BloombergNEF Tier 1 status for it. Its reliability record is strong historically, having been a Kiwa PVEL Top Performer for around eight years through 2024, but it is not on the 2026 list, so we cite the record through 2024 rather than as current.
REC runs a heterojunction cell, so it helps to see how HJT compares with TOPCon and PERC and the Tier 1 back-contact module we lead with. For the numbers behind the decision, read how the capital case is modelled and how we assure quality without MCS.
REC earns a place on a commercial roof as a premium heterojunction option, and we are clear about where that premium is and is not justified. It is a long-running, recognised module maker with a strong technical reputation, and since October 2021 it has been owned 100% by Reliance Industries, one of the world's largest industrial groups. That ownership is the genuine financeability point for the brand, because the financial strength standing behind a 25-year-plus asset matters as much as the panel itself. We are precise about its limits too: it has never been a Silicon Module Super League member, and we cannot source it on the current BloombergNEF Tier 1 list, so we never present it as Tier 1. We position it on its real strengths instead.
Where REC tends to suit a scheme is the value-against-premium judgement a finance director weighs after the survey rather than before it. We set it alongside genuinely Tier 1 modules so you can assess it on merit for your roof geometry, your structural load and your generation target. The specification follows the survey and the PV*SOL model rather than a badge. For the wider framing, see our guide to bankable and Tier 1 panels.
REC's commercial range is built on heterojunction cell technology, the Alpha and Alpha Pure-R series. Heterojunction pairs a crystalline-silicon wafer with thin amorphous-silicon layers, which gives the cell a low temperature coefficient; the practical effect is that output holds up better as the module heats through a summer afternoon, when a flat commercial roof runs hot. For a building that draws most of its load during daylight, that steadier warm-weather behaviour is worth having against the self-consumption profile we model.
We do not quote a headline efficiency percentage, watt rating or panel dimension here. The figure that matters is the one on the datasheet for the exact module we propose for your roof, because a series-level number may not match the panel you receive. We confirm those specifications at the survey and set them out in your written design. The module is then chosen to suit the roof: the structural capacity, the orientation and pitch, and the layout the drone survey produces once plant, vents and parapet lines are accounted for. If you want to understand how heterojunction compares with the alternatives on a commercial roof, our guide to TOPCon, HJT and PERC sets the cell technologies side by side.
Warranty is confirmed from the datasheet for the exact REC module before contract, never quoted as a headline that might not match the panel installed. Product and performance warranty terms vary by series and production year, so we read both figures back to you in writing in the proposal, set against the model you actually receive. The corporate backing matters as much as the term: a long warranty is only as good as the company standing behind it, and REC's ownership by Reliance Industries gives substantial financial weight behind that cover.
On reliability, REC has a strong independent record. It was a Kiwa PVEL Top Performer for around eight years through the 2024 cycle, so we cite that record through 2024 rather than as a current result, because it is not on the most recent list. We read reliability evidence alongside bankability, never as the same thing. Because a system above 50 kWp sits outside the domestic MCS scheme, assurance comes from the engineering: design and installation to BS 7671, commissioning and inspection to IEC 62446-1, a G99 connection agreed with the DNO, CDM 2015 duties discharged through the project, and a structural survey confirming the roof carries the array. Our quality without MCS guide sets out the full stack.
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.
