Energy Io Ltd
Registered name: ENERGY IO LTD
Energy Io Ltd made £29.7m revenue and £2.5m profit in the year to 31 Mar 2026. read from filing text
Energy Io Ltd’s revenue grew 122% to £29.7m in the year to 31 Mar 2026, with £2.5m profit and 6 employees. The company is classified under “construction of utility projects for electricity and telecommunications” and is based in Glasgow; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Glasgow, Scotland
- Age
- 4 yrs · since 2021
- Type
- Private Limited Company
Key figures
Badges are automated estimates derived from the filed figures — not statements of fact about the company.
Financial history
| Year to | 31 Oct 2022 | 31 Mar 2024 | 31 Mar 2025 | 31 Mar 2026 |
|---|---|---|---|---|
| Disclosure | No P&L | No P&L | Full P&Lread from filing text | Full P&Lread from filing text |
| Profit & loss | ||||
| Revenue (turnover) | — | — | £13.4m | £29.7m |
| Cost of sales | — | — | £5.9m | £21.2m |
| Gross profit | — | — | £7.5m | £8.6m |
| Operating profit | — | — | £6.5m | £3.3m |
| Profit before tax | — | — | £6.5m | £3.3m |
| Profit after tax | — | — | £4.7m | £2.5m |
| Profit (best available) | — | — | £4.7m | £2.5m |
| Staff costs | — | — | £12.6k | £906k |
| Employees (average) | 0 | 1 | 4 | 6 |
| Ratios | ||||
| Profit margin | — | — | 35.3% | 8.4% |
| Gross margin | — | — | 56.1% | 28.8% |
| Revenue per employee | — | — | £3.3m | £5m |
| Profit per employee | — | — | £1.2m | £416k |
| Cash conversion | — | — | −27.7% | −177.2% |
| Growth (year on year) | ||||
| Revenue growth | — | — | — | ▲122.5% |
| Profit growth | — | — | — | ▼47% |
| Headcount growth | — | — | — | ▲50% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £3 | £320k | £1.6m | £4.7m |
| Net assets | £3 | £409k | £5.1m | £7m |
| Fixed assets | £0 | £94.9k | £603k | £923k |
| Current assets | £3 | £594k | £6.8m | £11.4m |
| Debtors | — | £274k | £4.5m | £0 |
| Deferred income | — | — | £2.7k | £3m |
| Cash from operations | — | — | −£1.8m | −£5.9m |
| Source | AbridgedAccounts · bulk data May 2024 | AbridgedAccounts · bulk data May 2024 | AbridgedAccounts · bulk data Aug 2025 | FullAccounts · bulk data Sep 2026 |
How the business works
- Profit margin
- 8.4%
- Profit ÷ revenue.
- Gross margin
- 28.8%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £5m
- Revenue ÷ average employees.
- Profit per employee
- £416k
- Profit ÷ average employees.
- Cash conversion
- −177.2%
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- 3.1%
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- 10.1%
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- 0%
- 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
- ▲37%
- Now £7m
- Cash at bank
- ▲194%
- Now £4.7m
- Headcount
- ▲50%
- Now 6
- Deferred income
- ▲110812%
- Now £3m
- Fixed assets
- ▲53%
- Now £923k
Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal only.
Group structure
Subsidiaries (4)
- Energy Io Engineering LtdFigures not disclosed
- Energy Io O&m Services LtdFigures not disclosed
- Energy Io Projects LtdFigures not disclosed
- Energy Io Properties LtdFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Similar profitable businesses
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Sources
Latest figures from FullAccounts for the year to 31 Mar 2026 (profit £2.5m), from the Companies House accounts bulk data published Sep 2026. Spotted an error? Request a correction.
Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.