14291372ActivePrivate limited company

O3 Energy OÜ

Registered 7. juuli 2017, primary activity: Constructional engineering-technical designing and consulting. Main place of business in Kristiine linnaosa, Tallinn, Harju maakond.

Kristiine linnaosa, Tallinn, Harju maakondEMTAK 71121Constructional engineering-technical designing and consulting8+ years
Updated 7 h ago
Revenue 2025 (I kv)
0 €
▼ 100% vs 2024 I kv
As of 10.04.2026 (MTA)
Employees
2025 (MTA)
Taxes paid
0 €
State + labour taxes · 2025 (I kv)
Tax debt
€0
As of 11.05.2026 (MTA)

Overview

e-Business Register · 7 h ago
Legal form
Private limited company
Date of first registration
07.07.2017e-Business Register
Address
Vesipapi tn 2, Kristiine linnaosa, Tallinn, 10619 Harju maakondADS · e-Business Register
E-mail address
[email protected]e-Business Register
Website
www.o3.eee-Business Register · domain active
Telephone
+372 53870338e-Business Register
Principal activity
EMTAK 71121 — Constructional engineering-technical designing and consultinge-Business Register · ETCB
Share capital
3000,00 €e-Business Register

Officers (2)

e-Business Register · 7 h ago
MV
· board member since 05.05.2025
Board member
MH
· board member since 05.05.2025
Board member

Founders

e-Business Register · 7 h ago
OT
O3 Technology OÜLEGAL PERSON
Legal person · 14062364 · founder since 07.07.2017
Founder

Shareholders

e-Business Register · 7 h ago
OT
O3 Technology OÜLEGAL PERSON
Legal person · 14062364 · shareholder since 02.09.2023
Shareholder 100% · €3k

Beneficial owners (2)

e-Business Register · 7 h ago
MK
· ultimate beneficial owner since 22.10.2018
Ultimate beneficial owner
MT
· ultimate beneficial owner since 22.10.2018
Ultimate beneficial owner

Tech stack

Website analysis · 17 h tagasi
o3.ee1 technology detected
Web server
Apache

Annual reports (6)

e-Business Register · annual reports · 2 päeva tagasi
Revenue · 2019–2024
€5klatest
€100k€50k0
2019: €73k2020: €72k2021: €67k2022: €93k2023: €87k2024: €5k
201920222024
Profit · 2019–2024
€-8klatest
€20k€5k€-10k
2019: €-6k2020: €12k2021: €-2k2022: €1k2023: €-5k2024: €-8k
201920222024
YearRevenueProfitEquityAssetsEmployees
20244539 €−8130 €2390 €€2k130.06.2025
202387 276 €−4991 €10 520 €€25k416.04.2024
202292 614 €1034 €15 511 €€29k429.06.2023
202166 601 €−2191 €14 476 €€28k305.05.2022
202071 686 €11 554 €16 667 €€27k311.06.2021
201972 770 €−6010 €5113 €€16k417.04.2020
Original files (PDF, XBRL) — in the e-Business Register.View reports on e-Business Register

Taxes, revenue and employees

Estonian Tax and Customs Board · 10.04.2026 as of
€50k€25k0
2022202320242025
YearRevenue (a)State taxesTaxes on workforceEmployees (Q4)
2025I Q0 €0 €0 €
202413 557 €10 994 €8879 €
202386 570 €52 493 €38 086 €2
202291 694 €49 644 €34 670 €5
Quarterly breakdown
YearQ1Q2Q3Q4
Revenue 20250 €
State taxes 20250 €
Taxes on workforce 20250 €
Employees 2025
Revenue 2024€14k0 €0 €0 €
State taxes 2024€11k
Taxes on workforce 2024€9k
Employees 2024
Revenue 2023€22k€14k€25k€25k
State taxes 2023€13k€11k€14k€15k
Taxes on workforce 2023€9k€9k€10k€10k
Employees 20234332
Revenue 2022€22k€34k€12k€24k
State taxes 2022€11k€19k€10k€11k
Taxes on workforce 2022€7k€13k€8k€6k
Employees 20225555

Licences (1)

Majandustegevuse register · 18 h tagasi
Projekteerimine
MajandustegevusteadeEEP003902from 17.07.2017
Valid

History (16)

e-Business Register · entries
05.05.2025
Amending entry
Entry no. 8
05.05.2025
Amending entry
Ä 50060811 / 8 · Status: In force
22.04.2024
Amending entry
Entry no. 7
22.04.2024
Amending entry
Ä 50060811 / 7 · Status: In force
02.09.2023
Amending entry
Entry no. 6
Show 11 more events
02.09.2023
Amending entry
Ä 50060811 / 6 · Status: In force
12.07.2023
Amending entry
Entry no. 5
12.07.2023
Amending entry
Ä 50060811 / 5 · Status: In force
02.02.2023
Amending entry (TsMS § 595¹ lg 1 alusel)
Entry no. 4
02.02.2023
Amending entry (TsMS § 595¹ lg 1 alusel)
Ä 50060811 / 4 · Status: In force
19.01.2018
Amending entry
Entry no. 3
19.01.2018
Amending entry
Ä 50060811 / 3 · Status: In force
14.12.2017
Amending entry
Entry no. 2
14.12.2017
Amending entry
Ä 50060811 / 2 · Status: In force
07.07.2017
First entry
Entry no. 1
07.07.2017
First entry
Ä 50060811 · Status: In force

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