- Companies
- Electricians
- Swansea
- Thermavolt Energy Solutions Ltd
Thermavolt Energy Solutions Ltd
- Company number
- 16872375
- Incorporated
- 24 Nov 2025
- Registered office
- Chorlton Llwynmawr Road, Sketty, Swansea, SA2 9HB
- Nature of business
- Electrical installation; Plumbing, heat and air-conditioning installation; Other construction installation
Thermavolt Energy Solutions Ltd is a newly incorporated private limited company registered in Swansea, company number 16872375, one of 148 electrical contractors in Swansea. Its next accounts are due at Companies House on 24 August 2027, and its first CT600 is due at HMRC on 23 November 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Thermavolt Energy Solutions Ltd is registered
The registered office is in Swansea (SA2), in the Swansea local authority area, Wales. Show SA2 9HB on a map.
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- DC Plumbing & Construction LtdBuilders
- Ginger Property Services LimitedProperty developers
- Smart Space Living LtdJoiners and carpenters
- Paul Vernon HV Sap LimitedCivil engineering
- L.H Hiab & Recovery LimitedMechanics and garages
- Lewis Tarmac LtdCivil engineering
- Tolzini Cleaning Services LtdCleaning companies
Also registered at this address
1 other company uses the same registered office as Thermavolt Energy Solutions Ltd.
- Wallfix Wallties LimitedSpecialist contractors
What happens if Thermavolt Energy Solutions Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 24 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 25 Aug 2027 to 24 Sep 2027 | £150 |
| 1 to 3 months late | 25 Sep 2027 to 24 Nov 2027 | £375 |
| 3 to 6 months late | 25 Nov 2027 to 24 Feb 2028 | £750 |
| More than 6 months late | From 25 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 16872375
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 November 2025
- Registered office
- Chorlton Llwynmawr Road, Sketty, Swansea, SA2 9HB
- Nature of business
- Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290) - Year end
- 30 November (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Swansea
Other active electrical contractors registered in Swansea.
- Three Phase Ltd2026
- Tidal Develop and Construct Ltd2026
- TPN Electrical Engineers Limited2004
- Tri-Energy Ltd2026
- Truecore Electrics Ltd2025
- Trydan Engineering Ltd2024
- Ulex Energy Ltd2025
- Wave Energy Ltd2026
All electrical contractors in Swansea · All trades in Swansea · Electricians across the UK
Frequently asked questions
When are Thermavolt Energy Solutions Ltd's accounts due?
Thermavolt Energy Solutions Ltd's next accounts are due at Companies House by 24 August 2027 (in 315 days), covering the period to 30 November 2026.
When is Thermavolt Energy Solutions Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 23 November 2026, due by 23 November 2027, and one for the period to 30 November 2026, due by 30 November 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Thermavolt Energy Solutions Ltd still trading?
Thermavolt Energy Solutions Ltd is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Thermavolt Energy Solutions Ltd do?
Thermavolt Energy Solutions Ltd is registered under Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290).
How old is Thermavolt Energy Solutions Ltd?
Thermavolt Energy Solutions Ltd was incorporated on 24 November 2025, less than a year ago.
What is the penalty if Thermavolt Energy Solutions Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Thermavolt Energy Solutions Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.