- Companies
- Specialist contractors
- Birmingham
- Green Watt Energy Limited
Green Watt Energy Limited
- Company number
- 13786655
- Incorporated
- 7 Dec 20214 years trading
- Registered office
- Grosvenor House, 11 ST Pauls Square, Birmingham, B3 1RB
- Nature of business
- Other specialised construction activities n.e.c.
Green Watt Energy Limited is a 4-year-old private limited company registered in Birmingham, company number 13786655, one of 442 specialist construction companies in Birmingham. Its next accounts are due at Companies House on 29 September 2027, and the CT600 for the period to 29 December 2026 is due at HMRC on 29 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £3,998 (-45.5%) on the year before, to £4,782.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £34K against £36K owed within a year: 1.0 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £4,782 | £34K | £36K | 2 | |
| 31 Dec 2024 | £8,780 | £8,784 | £5,604 | 1 | |
| 31 Dec 2023 | £3,490 | £2,328 | £1,463 | 1 | |
| 31 Dec 2022 | -£1,210 | £1,210 | 1 |
Where Green Watt Energy Limited is registered
The registered office is in Birmingham (B3), in the Birmingham local authority area, West Midlands. Show B3 1RB on a map.
Other trade companies in B3
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- Jorah LimitedPainters and decorators
- JDL Solar LimitedElectricians
- Nexafitout LtdBuilders
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- Studio Edge LtdInstallers
Shared registered office
40 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Green Watt Energy Limited 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 29 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Sep 2027 to 29 Oct 2027 | £150 |
| 1 to 3 months late | 30 Oct 2027 to 29 Dec 2027 | £375 |
| 3 to 6 months late | 30 Dec 2027 to 29 Mar 2028 | £750 |
| More than 6 months late | From 30 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Dec 2027 | £200 |
| 3 months late | 29 Mar 2028 | another £200 |
| 6 months late | 29 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Dec 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
- 13786655
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 December 2021 (4 years ago)
- Registered office
- Grosvenor House, 11 ST Pauls Square, Birmingham, B3 1RB
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 29 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 25 April 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Birmingham
Other active specialist construction companies registered in Birmingham.
- Greenacres Contractors Ltd2020
- Greenfields Construction Ltd2023
- GS Cladding Ltd2023
- GTD Tiling Ltd2013
- Guardian Gas Limited2005
- Gumthorn Ltd2023
- H.J.Welding & Fabrication Ltd2015
- H2O Environmental Services Limited2003
All specialist construction companies in Birmingham · All trades in Birmingham · Specialist contractors across the UK
Frequently asked questions
When are Green Watt Energy Limited's accounts due?
Green Watt Energy Limited's next accounts are due at Companies House by 29 September 2027 (in 350 days), covering the period to 29 December 2026.
When is Green Watt Energy Limited's CT600 due?
The CT600 for the period to 29 December 2026 is due at HMRC by 29 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 September 2027.
Is Green Watt Energy Limited still trading?
Green Watt Energy Limited 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 Green Watt Energy Limited do?
Green Watt Energy Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Green Watt Energy Limited?
Green Watt Energy Limited was incorporated on 7 December 2021, 4 years ago.
What is the penalty if Green Watt Energy Limited 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 Green Watt Energy Limited 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.