These are the makers we can procure, support and stand behind in the UK, so they are the ones we specify from. We are not a dealer for any of them and we hold no exclusive agreement with any of them. If a project genuinely needs something outside this list, we will say so and source it rather than bend the design to fit a brand we already stock.
Alectrona
ManufacturersThe makers we specify, and what each is actually for.
One page per manufacturer, covering every product line that maker supplies to us. Each page names the series, sets out how the company stands behind a twenty-year asset, and says where we would specify something else instead.
- Modules, inverters and storage
- Named series, named warranty
- Over 50 kWp, outside MCS
We are not a dealer for any of them.
We hold no exclusive agreement with any manufacturer on this page and we take no badge from any of them. The list is the set of makers we can procure, install and support properly in the UK, which is a narrower and more useful thing than a catalogue. What decides which one ends up on your roof is the survey and the model, not a partnership.
Several of these companies supply more than one thing. A maker that sells both inverters and battery storage has one corporate history and one warranty operation, so it gets one page here with each product line set out separately. That also stops a credential earned on one product line quietly reading across to another, which matters most for the module bankability schemes, because they rate PV modules and nothing else.
Filter by what a manufacturer supplies.
A maker that supplies more than one product line appears once, with a pill for each. Use the filters to see only the makers of a given product.
Showing all 20 manufacturers.
- JA Solar
A module maker of real scale with a young storage cabinet line, assessed separately.
- Solar modules
- Battery storage
- LONGi
Vertically integrated from wafer to laminate; the deepest bankability record we specify.
- Solar modules
- JinkoSolar
The volume module maker for wide, regular roofs where cost per watt decides.
- Solar modules
- Trina Solar
Large-format bifacial dual glass for reflective flat roofs, with the datasheet published in full.
- Solar modules
- Canadian Solar
Large-format modules from a utility-scale supplier whose Canadian name sits over Chinese manufacturing.
- Solar modules
- Aiko Solar
Back-contact modules for roofs that run out of area before they run out of budget.
- Solar modules
- Qcells
The non-Chinese module route, for procurement policies and tenders that ask where it is made.
- Solar modules
- REC
Premium heterojunction from a single Singapore fab, backed by an unusually large owner.
- Solar modules
- Astronergy
Early TOPCon manufacturer inside the CHINT industrial group, with a UK-registered supply route.
- Solar modules
- DMEGC Solar
A repeatedly tested value module from the solar division of a Shenzhen-listed magnetics group.
- Solar modules
- SMA
The inverter we reach for when the DNO writes hard conditions into the connection offer.
- Inverters
- Fronius
EU-built inverters for exposed outdoor duty, with the size-based warranty scheme spelt out.
- Inverters
- Sungrow
The inverter maker a funder already recognises, from 50 kW roofs to 1500 V ground-mount.
- Inverters
- SolarEdge
Per-module power electronics for shaded and complex roofs, plus an AC-coupled battery cabinet.
- Inverters
- Battery storage
- Solis
A continuous three-phase string range to 150 kW, with all-in-one storage cabinets alongside it.
- Inverters
- Battery storage
- SolaX
Three-phase inverters to 30 kW and packaged storage for segmented, phased or retrofitted sites.
- Inverters
- Battery storage
- Fox ESS
Inverters and storage from one maker, chosen for UK stock depth and a domestic service route.
- Inverters
- Battery storage
- Sigenergy
One integrated stack across inverter, battery, controls and backup, from a very young maker.
- Inverters
- Battery storage
- Solplanet
Three-phase string inverters from 50 to 110 kW for PV-only roofs, with the battery supplied by another maker.
- Inverters
- Sunsynk
Hybrid inverter and high-voltage LFP stack as one system, with UK support behind it.
- Inverters
- Battery storage
No manufacturer on this list supplies that. Tell us what the project needs and we will source it.
The questions we ask of a manufacturer before it goes on a roof.
A commercial array is a twenty-year asset with a warranty behind it, so the maker matters as much as the datasheet. We look at who owns the company and whether that ownership has changed recently, whether it makes its own cells or buys them in, where the equipment we would actually receive is manufactured, and what the warranty guarantees rather than what it advertises. For storage we look at certification of the cells and the system to IEC 62619 and the associated safety standards, and at what the warranty says about capacity at end of life.
None of that reduces to a badge, which is why each page states it in full instead. Where a manufacturer has something a finance committee should know, a short track record, a loss-making year, an ownership change, its page says so on the page rather than leaving you to find it.
Choosing a manufacturer: common questions
The design chooses it. We survey the site, model the array in PV*SOL against your half-hourly consumption, and set the export position with your Distribution Network Operator. Only then does the equipment get picked, because the roof geometry, the shading, the load shape and the connection decide what the system has to do. The proposal names the exact series and the warranty terms rather than a brand family.
Several of these makers supply more than one thing. A manufacturer that sells both inverters and battery storage has one corporate history, one balance sheet and one warranty operation, and splitting it across two pages meant telling that story twice and inviting a reader to assume a credential from one product line applies to the other. One page per maker states it once, with each product line set out separately underneath.
No. It is a bankability signal for PV modules: it reflects whether major lenders have financed non-recourse projects using that maker’s modules, which is a statement about the company rather than about the product on your roof. It applies to modules only and says nothing about inverters or batteries. Where we cite it we name the scheme and the quarter, and we re-verify it for the exact module before contract.
On the things that actually carry a twenty-year asset: the scale and track record of the manufacturer, whether the cells are made by that company or bought in, the warranty term and what it guarantees at end of life, and certification of the cells and the system to IEC 62619 and the associated safety standards. Those are stated on each maker’s page rather than summarised into a badge.
Get a commercial quote
Tell us about the roof, and we will tell you what should go on it.
The survey and the PV*SOL model decide the equipment, so the proposal comes back with the manufacturer, the series and the warranty named, and with the reasoning for each. If a different maker suits your site better than the one you had in mind, we will say so.
- On-site 3D drone survey and half-hourly PV*SOL model
- Named series and named warranty in the proposal
- Over 50 kWp, outside MCS