Solar and energy efficiency installers in Wales: the businesses taking on premises this week
A new occupier specifies its lighting and heating in the fit-out weeks, and a let commercial building rated F or G can't go on being let without works or an exemption. We tell you which premises are at that point, with the building's energy rating where it has one.
Last week in Wales
In the daily files from 5 to 11 November 2026, businesses in Wales that took on premises, changed hands or were about to, graded A or B for an energy efficiency desk: 4. 3 of them were opening or about to, 1 had just moved in or were under a new owner, and 2 came with a landline to ring. Across Great Britain the same week: 91. 50% of the region's rows could not have been flagged by a service working from Companies House alone.
Counted from the daily files dated 5 to 11 November 2026, as read on 11 November 2026. Each event is counted once, on the first file it reached. The same count for every region, in the same words.
Why timing matters
The Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015 set a minimum of E for let commercial buildings: no new lease below E since 1 April 2018, and no continuing lease since 1 April 2023, unless the landlord has registered an exemption. A non-domestic building needs an energy performance certificate whenever it's built, sold or let (the Energy Performance of Buildings (England and Wales) Regulations 2012), and each certificate comes with a recommendation report. Where a certificate can be told apart for the premises, the row carries its rating and the assessor's recommendations, beside the trade, the floor area and the rateable value, so a kitchen, a factory and an office get the right call. Certificates just lodged for premises a business trades from, rated F or G, or D or E with recommendations, come in as rows of their own.
What we tell you
The moments that matter for you:
| Coming | A business is about to open: a licence applied for, a unit being fitted out, a new company set up to trade from the address. |
| Just moved in | A business has started at premises that had nobody in them: a new ratepayer, a new food business, a newly registered care home, nursery, surgery or garage. |
| Changed hands | A new operator at premises that were already trading: a pub, shop or care home under new ownership, often keeping the old name on the door. |
How to use it
Work the A rows first: the kitchens, workshops, care homes, gyms and large sites opening, moving in or changing hands. Then the certificates just lodged, F and G before D and E. The job column says what you'd offer before you ring; the reason column says why now.
The councils in Wales
The file is cut to the region, or to any of these councils if you'd rather: Blaenau Gwent, Bridgend, Caerphilly, Cardiff, Carmarthenshire, Ceredigion, Conwy, Denbighshire, Flintshire, Gwynedd, Isle of Anglesey, Merthyr Tydfil, Monmouthshire, Neath Port Talbot, Newport, Pembrokeshire, Powys, Rhondda Cynon Taf, Swansea, Torfaen, Vale of Glamorgan, Wrexham. Each link is the council's own page of new companies, free, every Monday.
A free fortnight of the file for Wales
The first file comes within one working day, cut to Wales, then every weekday for two weeks. No card, nothing to cancel. After that it's £250 a month for the region, monthly, and you can stop at any month's end.
One row a week, free
Not ready for a fortnight of files? Have one of the week's rows for your region each Friday, the one we'd ring first, free, for as long as you like. The full file has every row, every weekday.
Built for selling within the rules: businesses not people, every row with its source and date, and nothing your team can't explain to someone who asks. How it's done.
Questions
Do you see their energy bills or who supplies them?
No. Bills, meter numbers and supplier contracts aren't public, and we don't guess them. Where a non-domestic energy certificate can be told apart for the premises, the row carries its rating, floor area, heating fuel, what a building like it uses in a year by the certificate's own model, and the assessor's recommendations, with how sure the match is. Otherwise the trade and the size of the premises say what the building is likely to run.
How is this different from buying a list?
A list is a snapshot of businesses that exist. This is what changed yesterday: who moved in, who took over, who left. A bought list can't tell you any of that, and it's out of date the day it arrives.
How do you find them?
From public registers, read every day and kept, so we can see when something changes at an address. The sources are on the sources page. How we put them together is ours, and we don't publish it.
Is there personal data in it?
Almost none. The file is about businesses and premises: no director names, no home addresses. Where a business publishes only a named address on its own website, the daily file carries it in a marked column, as the privacy notice says; a sample never does. Where a phone number or a mailbox is public, we say where it came from.
Can we email or ring them?
Limited companies and LLPs can be emailed without prior consent under PECR, if you say who you are and give a way to opt out. Phone numbers are yours to screen against the TPS and CTPS before you ring.
Do we have to ring them?
No. Each daily file can come with the emails already written, one for each business with a mailbox of its own, in your words, for you to send from your own mailbox. We draft the wording from your website, you change anything you like, and it's part of the price.
What does it cost?
£250 a month for a region, or £1,000 a month for the whole of Great Britain, monthly, and you can stop at any month's end. The first two weeks are free, so your team can try it on real rows before paying anything.
Is the file exclusive?
Not the whole file, but you can have a head start. First look sends your trade's new rows for your region to you each morning, a working day before anyone else in your trade gets them, for one firm per trade and region: £375 a month for a region, or £1,500 a month for Great Britain, on the same terms.
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