Siel Energy Systems Limited
Registered name: SIEL ENERGY SYSTEMS LIMITED
Part of Legrand France Sa groupSiel Energy Systems Limited made £687k revenue and £93k profit in the year to 31 Dec 2023.
Siel Energy Systems Limited’s revenue fell 53% to £687k in the year to 31 Dec 2023, with £93k profit and 6 employees. The company is classified under “manufacture of other electrical equipment” and is based in Sheffield; we hold 2 years of its filed accounts.
- Status
- Active
- Location
- Sheffield
- Age
- 34 yrs · since 1991
- Type
- Private Limited Company
Key figures
Financial history
| Year to | 31 Dec 2022 | 31 Dec 2023 |
|---|---|---|
| Disclosure | Full P&L | Full P&L |
| Profit & loss | ||
| Revenue (turnover) | £1.4m | £687k |
| Cost of sales | −£624k | −£363k |
| Gross profit | £824k | £324k |
| Operating profit | £320k | £138k |
| Profit before tax | £320k | £138k |
| Profit after tax | £263k | £93k |
| Profit (best available) | £263k | £93k |
| Employees (average) | 7 | 6 |
| Ratios | ||
| Profit margin | 18.2% | 13.5% |
| Gross margin | 56.9% | 47.2% |
| Revenue per employee | £207k | £115k |
| Profit per employee | £37.6k | £15.5k |
| Growth (year on year) | ||
| Revenue growth | — | ▼52.5% |
| Profit growth | — | ▼64.7% |
| Headcount growth | — | ▼14.3% |
| Balance sheet — indirect signals, not revenue | ||
| Net assets | — | — |
| Source | Accounts · bulk data Feb 2025 | Accounts · bulk data Feb 2025 |
How the business works
- Profit margin
- 13.5%
- Profit ÷ revenue.
- Gross margin
- 47.2%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £115k
- Revenue ÷ average employees.
- Profit per employee
- £15.5k
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- —
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- —
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- —
- Money owed by customers. Low = customers pay quickly.
Balance-sheet signals
Year-on-year changes in filed balance-sheet items. They can hint at momentum (or investment) but are not revenue or profit and must not be read as such.
- Net assets
- —
- Now —
- Cash at bank
- —
- Now —
- Headcount
- ▼14%
- Now 6
- Deferred income
- —
- Now —
- Fixed assets
- —
- Now —
Group structure
Ownership chain
- Legrand France Sa (registered outside the UK register)ultimate parent75–100%
- Legrand UK Limited75–100%
- Legrand Electric Limited75–100%
- PCL Holdings Limited75–100%
- Siel Energy Systems Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (1)
- Power Control LtdFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Sources
Latest figures from accounts for the year to 31 Dec 2023 (profit £93k), from the Companies House accounts bulk data published Feb 2025. Spotted an error? Request a correction.
Updated from Companies House on 18 Oct 2026
Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.