O3 Energy OÜ
- Registry code
- 14291372
- VAT number
- not VAT registered
- Address
- Harju maakond, Tallinn, Kristiine linnaosa, Vesipapi tn 2, 10619
- Registered
- 07.07.2017 · 9 yrs
- Activity
- Engineering activities and related technical consultancy 71121
- Capital
- 3 000 €
- i•••@o•••.eeLog in to see
- Phone
- +372 5•• ••••Log in to see
- Website
- https://www.o3.ee
- No tax debt
- No enforcement proceedings (12 months)
- No payment orders (12 months)
- No bankruptcy or liquidation
- No sanctions
- Report filed (2025)
- Not VAT registered
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Board and owners
2 persons
| Board 2 | ||
|---|---|---|
| Mats Viisileht4 companiesno tax debt | Personal ID ↗ | 05.05.2025 |
| Mihkel Hiielaid4 companiesno tax debt | Personal ID ↗ | 05.05.2025 |
| Shareholders 1 | ||
| O3 Technology OÜ | 100,0% 3 000 € | 02.09.2023 |
| Beneficial owners 2 | ||
| Martin Kiil1 companyno tax debtkaudne osalus | 22.10.2018 | |
| Mikk Tasakaudne osalus | 22.10.2018 | |
Business Register open data
Quarterly taxes and revenue
2025 Q1
| Quarter | Revenue | Change y/y | Labour taxes | State taxes | Employees |
|---|---|---|---|---|---|
| 2025 Q1 | 0 € | 0 € | 0 € | — | |
| 2024 Q4 | 0 € | — | — | — | |
| 2024 Q3 | 0 € | — | — | — | |
| 2024 Q2 | 0 € | — | — | — | |
| 2024 Q1 | 13 557 € | ▼ 38% | 8 879 € | 10 994 € | — |
| 2023 Q4 | 25 412 € | ▲ 8% | 10 232 € | 14 507 € | 2 |
| 2023 Q3 | 25 271 € | ▲ 110% | 10 119 € | 14 387 € | 3 |
| 2023 Q2 | 14 005 € | ▼ 59% | 8 891 € | 11 026 € | 3 |
| 2023 Q1 | 21 882 € | ▼ 1% | 8 844 € | 12 573 € | 4 |
| 2022 Q4 | 23 524 € | 6 374 € | 10 575 € | 5 | |
| 2022 Q3 | 12 044 € | 8 180 € | 9 943 € | 5 | |
| 2022 Q2 | 33 954 € | 12 796 € | 18 585 € | 5 |
Näita kogu ajalugu (13 kvartalit)
| 2022 Q1 | 22 172 € | 7 320 € | 10 541 € | 5 |
Tax and Customs Board, published on the 10th of the month following the quarter. State taxes include employment taxes. CC BY-SA 3.0
Annual reports
5 yr
| 2025 | 2024 | 2023 | 2022 | 2021 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Sales revenue | 2 560 € | ▼ 44% | 4 539 € | ▼ 95% | 87 276 € | ▼ 6% | 92 614 € | ▲ 39% | 66 601 € |
| Profit | 610 € | ▲ plussi | -8 130 € | ▼ 63% | -4 991 € | ▼ miinusesse | 1 034 € | ▲ plussi | -2 191 € |
| Profit margin | 23,8% | -179,1% | -5,7% | 1,1% | -3,3% | ||||
| Jaotamata kasum | -610 € | ▼ miinusesse | 7 520 € | ▼ 40% | 12 511 € | ▲ 9% | 11 477 € | ▼ 16% | 13 667 € |
| Cash | 11 € | ▼ 85% | 72 € | ▼ 99% | 5 404 € | ▼ 71% | 18 494 € | ▼ 3% | 18 995 € |
| Current assets | 3 000 € | ▲ 26% | 2 390 € | ▼ 85% | 16 357 € | ▼ 43% | 28 542 € | ▲ 2% | 27 912 € |
| Põhivara | — | 0 € | ▼ 100% | 9 000 € | — | — | |||
| Assets | 3 000 € | ▲ 26% | 2 390 € | ▼ 91% | 25 357 € | ▼ 11% | 28 542 € | ▲ 2% | 27 912 € |
| Current liabilities | — | 0 € | ▼ 100% | 14 837 € | ▲ 14% | 13 031 € | ▼ 3% | 13 436 € | |
| Total liabilities | — | 0 € | ▼ 100% | 14 837 € | ▲ 14% | 13 031 € | ▼ 3% | 13 436 € | |
| Equity | 3 000 € | ▲ 26% | 2 390 € | ▼ 77% | 10 520 € | ▼ 32% | 15 511 € | ▲ 7% | 14 476 € |
| Tööjõukulud | 0 € | ▲ 100% | -2 113 € | ▲ 98% | -91 443 € | ▼ 3% | -88 541 € | ▼ 59% | -55 566 € |
| Employees | 0 | ▼ 100% | 1 | ▼ 75% | 4 | 0% | 4 | ▲ 33% | 3 |
| Filed | 30.06.2026 | 30.06.2025 | 16.04.2024 | 29.06.2023 | 05.05.2022 | ||||
| Report | In the Business Register ↗ | In the Business Register ↗ | In the Business Register ↗ | In the Business Register ↗ | In the Business Register ↗ |
▲ kasv, ▼ decline compared to the previous year (growth in liabilities is red). Business Register, annual reports. CC BY 4.0
Revenue by activity
2025
| Activity | EMTAK | Sales revenue | Osa |
|---|---|---|---|
| Engineering activities and related technical consultancy main activity | 71121 | 2 560 € | 100% |
2025 annual report, RIK open data
Real estate
e-kinnistusraamat
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Source: e-kinnistusraamat (Centre of Registers and Information Systems), basic data
Debts and court cases
clean
Tax Board debtor list (daily), Official Announcements, State Gazette. The Tax Board publishes only today's list; earlier history is collected by Firmo.
Enforcement, payment orders and notices
clean
Official Announcements contain no enforcement, payment order or tax authority notices about the company.
Official Announcements (CC BY-SA 4.0). Enforcement proceedings, payment orders or tax decisions are published there only if they cannot be delivered to the company otherwise. The enforcement register is not public, so the absence of a notice does not mean there are no claims.
State: transactions, tenders, grants
none
No transactions with state agencies, procurement contracts or grants found
RTK Saldo, Riigihangete register, RTK toetatud projektid
Holdings in other companies
0
No holdings in other companies
Companies linked via the board
4
Sorted by revenue (latest report or 4 quarters).
Top 20 in activity: Engineering activities and related technical consultancy
20
| # | Company | Revenue |
|---|---|---|
| 1 | Dornier Construction and Service GmbH Eesti filiaal | 12,3 m € |
| 2 | Osaühing Reaalprojekt | 5,5 m € |
| 3 | Skepast&Puhkim OÜ | 5,1 m € |
| 4 | Sweco Estonia AS | 4,8 m € |
| 5 | Innopolis Insenerid OÜ | 4,7 m € |
| 6 | K-Projekt Aktsiaselts | 4,4 m € |
| 7 | Inseneribüroo Telora OÜ | 4,3 m € |
| 8 | Osaühing SIRKEL&MALL | 3,7 m € |
| 9 | Projektibüroo OÜ | 3,4 m € |
| 10 | P.P. Ehitusjärelevalve OÜ | 3,4 m € |
| 11 | MistralWind OÜ | 3,3 m € |
| 12 | Novel Engineering OÜ | 2,9 m € |
| 13 | Roadplan OÜ | 2,7 m € |
| 14 | osaühing DMT Insenerid | 2,7 m € |
| 15 | Ingerop Estonia OÜ | 2,6 m € |
| 16 | Osaühing EstKONSULT | 2,5 m € |
| 17 | Klemmer OÜ | 2,5 m € |
| 18 | AS LNK Industries Eesti filiaal | 2,4 m € |
| 19 | StrongPartner OÜ | 2,4 m € |
| 20 | VMBH OÜ | 2,3 m € |
Revenue from the latest annual report, otherwise Tax Board revenue for 4 quarters. All companies in this activity
Tegevusload
1 records
Activity licences (MTR and environmental)
| Field | Licence number | Valid from |
|---|---|---|
| Projekteerimine | EEP003902 | 17.07.2017 |
History and notices
8
| Date | Liik | Sisu |
|---|---|---|
| 05.05.2025 | Kanne | Muutmiskanne |
| 22.04.2024 | Kanne | Muutmiskanne |
| 02.09.2023 | Kanne | Muutmiskanne |
| 12.07.2023 | Kanne | Muutmiskanne |
| 02.02.2023 | Kanne | Muutmiskanne TsMS § 595¹ lg 1 alusel |
| 19.01.2018 | Kanne | Muutmiskanne |
| 14.12.2017 | Kanne | Muutmiskanne |
| 07.07.2017 | Kanne | Esmakanne |