Alectrona
Commercial inverters · over 50 kWpSolaX X3-PRO G2 three-phase string inverters, specified by Alectrona for smaller commercial arrays and multi-inverter roofs where a well-supported mid-market unit is the right fit.
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.
SolaX Power is an established Chinese manufacturer of three-phase string and hybrid inverters, supplied to us through UK distribution with a named manufacturer warranty. We hold it on our specification list as a competent mid-market three-phase unit, the kind of inverter that earns its place on a smaller commercial roof or as one of several machines in a distributed layout.
We are an engineer-led installer trading as Alectrona, a trading name of RVTC LTD, based in Yorkshire. We specify the inverter that fits the design and the array geometry, not a badge. For SolaX that means an honest reading of where it sits in the market and where it does the job well.
We specify SolaX when a design points to a three-phase string inverter at the smaller end of commercial, or to several smaller inverters spread across a roof rather than one large central unit. A multi-inverter layout suits segmented roofs, phased buildings or schemes where each building or sub-array is metered and managed in its own right, and the X3-PRO G2 is a sensible, procurable building block for that approach. On a 50 to 150 kWp scheme split across several roof sections, a set of 25K-G2 or 30K-G2 units often beats a single central machine on cabling runs, fault isolation and the ability to bring sections online in phases.
Where the roof is heavily shaded or carries many awkward orientations, we will say so and put module-level electronics such as SolarEdge forward instead; where the priority is a deep, high-MPPT string range across a large single roof, Solis or another platform may fit better. SolaX is specified on engineering fit for the array geometry, not as a default.
It is a mid-market choice on its merits. We make no Tier 1 or bankability claim for SolaX; inverter financeability is a separate matter that we confirm per project, alongside current warranty terms and UK support arrangements, before anything is contracted. Commercial solar above 50 kWp is survey-led, so the inverter sits inside a design built from your half-hourly load and your DNO connection rather than picked from a catalogue.
The range we draw on is the SolaX X3-PRO G2 three-phase string series, which spans roughly 8 kW to 30 kW. For commercial work the larger frames are the relevant ones: the X3-PRO 25K-G2 and 30K-G2 each carry three MPP trackers with two strings per tracker, accept up to 1,100 V DC input, allow 150% DC oversizing, and reach up to 98.5% peak efficiency. Each tracker handles its own string pair, so on a roof split across two or three orientations we can group the strings to hold yield across the array rather than forcing the layout onto one tracker.
At commercial scale these units suit smaller sites, sub-arrays or distributed multi-inverter designs rather than a single large machine on a large field or roof. A 100 kWp roof, for example, is more often built from three or four 25K-G2 or 30K-G2 units than from one central inverter, which keeps any single point of failure contained to one section of the array and lets each building or sub-array be metered and monitored on its own. The 150% DC oversizing headroom lets us load each inverter generously against the local yield profile, so the inverter is not the bottleneck on a bright day.
The exact model, count and DC-to-AC ratio always come from the PV*SOL design for your site and an on-site survey, never from a published figure. Every spec on this page is taken from the SolaX X3-PRO G2 datasheet and is confirmable; we publish model, power, phase, MPPT count and efficiency, and we confirm the live SKU and current firmware with the UK distributor before contract. We do not publish a price.
SolaX inverters report through the manufacturer's monitoring platform, giving per-inverter generation and fault data that we use for commissioning and ongoing oversight. In a multi-inverter scheme this gives clear visibility of each unit and each sub-array, which helps with fault isolation and performance tracking across a distributed roof.
Every commercial connection is engineered to G99 and the relevant DNO conditions, including any export limitation the network operator imposes as a condition of connection, configured and witness-tested at commissioning. We back the install with our own operations and maintenance and support, so the warranty path and the day-to-day monitoring sit with a single accountable team.
25 kW three-phase string inverter, 3 MPP trackers (2 strings each), up to 1,100 V DC input, up to 98.5% peak efficiency, suited to smaller commercial arrays or multi-inverter roofs.
30 kW three-phase string inverter, 3 MPP trackers (2 strings each), 150% DC oversizing headroom, up to 98.5% peak efficiency, used to size a sub-array or a single building feed within a larger scheme.
Models shown are confirmed against the current datasheet and your design at survey. The figure for your system comes from the PV*SOL model, not a price list.
SolaX is an established mid-market manufacturer of three-phase string and hybrid inverters with a named UK warranty and live distribution, which makes it a sensible, well-supported choice for the right design. We specify it most often on smaller commercial arrays or in multi-inverter layouts rather than as a single large central unit. Whether it is right for your scheme depends on the array geometry and the survey-led design, which is the basis we work from.
The X3-PRO 25K-G2 and 30K-G2 are held in live UK distribution, so lead time is usually weeks rather than months and a multi-inverter SolaX layout can be procured in parts if one section is needed first. The longer pole on a commercial programme is the DNO connection; where a scheme needs a G99 application the network operator's timeline drives the start date, so we run that in parallel with design. We confirm current stock and the lead time for the exact SKU at the point of specification.
Yes, by using several units. A larger array above 50 kWp would typically be built from multiple SolaX X3-PRO G2 inverters in a distributed layout, each serving a sub-array, rather than one large machine. That approach suits segmented or phased roofs and gives per-unit monitoring. For a single large central inverter on a big array we would usually look to a different platform; the right answer comes out of the PV*SOL model for your site.
We make no Tier 1 or bankability claim for SolaX. Tier 1 is a PV-module financeability scheme and does not apply to inverters, and the separate inverter bankability surveys are led by other manufacturers. SolaX is an established mid-market maker with a named manufacturer warranty and UK distribution, and we confirm current warranty terms and support arrangements per project before contract.
SolaX inverters supplied to the UK carry a standard manufacturer warranty of 10 years, which can be extended on eligible models. We confirm the exact warranty period, registration requirements and support route for the specific model proposed before contract, and we back the installation with our own operations, maintenance and support so the warranty path sits with an accountable team.
We do not publish inverter prices. Commercial solar above 50 kWp is survey-led, so the figure for your scheme comes from the PV*SOL model and the site survey, with the inverter sized to the array, the roof and your DNO connection rather than priced as a box on its own. In a multi-inverter SolaX design the unit count is part of that design, so we give you one honest project figure rather than a from-price per inverter.
Tell us about the roof and the load. We size the array in PV*SOL, set the export position with your DNO, and specify the inverter that fits, with the model and warranty named and no from-price.