List of Energy Companies in Estonia

Last updated 26 October 2026

There are 1,546 energy companies in Estonia, one in every 243 Estonian companies. Most of them are small: nearly all have one to four people, and only 19 firms employ 50 people or more. Half of all energy firms are based in Tallinn, Tartu, Haabneeme, Narva and Viljandi. Below you find the largest energy firms in Estonia, the cities where they cluster, how many started this year and which are the oldest. The full list with addresses, phone numbers and email is in our Estonian company database or through the Company Data API.

1,546 companies indexed · Data counted on 26 October 2026

Companies1,5461 in243 Estonian companiesCities303Largest cityTallinn 553Sole traders0.6%Employees1-4 (93%)Revenue$100-500K (41%)Email5%Phone9%Website13%

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A live view of all 1,546 energy firms, sorted by revenue. Narrow it by region, city, employee size, revenue, legal form or founding year, or search a firm by name.

Baltichydrogengroup OUBaltichydrogengroup OU

	Company Name	Country	City	Address 1	State/Province	Postal Code	Website	Founding Year	Yearly Revenue in U.S. Dollars	Employees Total	Business Legal Type - Description	Number of Companies in Group	Company Registration Number
1	Baltichydrogengroup OU	Estonia	Tartu	Riia Tn 181a	Tartu Maakond	50411	N/A	2022	$1,494,279,168	4	Corporation	6	16628730
2	AS Elenger Grupp	Estonia	Tallinn	Liivalaia Tn 9	Harju Maakond	10118	*****.ee	1997	$999,174,178	72	Corporation	89	10178905
3	Eesti Energia AS	Estonia	Tallinn	Lelle Tn 22	Harju Maakond	11318	*****.ee	1998	$357,649,206	669	Corporation	33	10421629
4	Greenbit Networks OU	Estonia	Tallinn	Vastriku Tn 17b	Harju Maakond	11311	N/A	2026	$327,692,800	100	Corporation	5	17526404
5	Powerwind Osauhing	Estonia	Tallinn	Ahtri Tn 6	Harju Maakond	10151	N/A	2015	$327,692,800	100	Corporation	5	12873064
6	Greengas Vorgud OU	Estonia	Kunda	Joe Tn 18	Lääne-viru Maakond	44109	N/A	2024	$327,692,800	100	Corporation	4	16962818
7	Elektrilevi OU	Estonia	Tallinn	Veskiposti Tn 2	Harju Maakond	10138	*****.ee	2004	$321,965,713	854	Corporation	33	11050857
8	Elering AS	Estonia	Tallinn	Kadaka Tee 42/1	Harju Maakond	12915	*****.ee	2004	$266,033,978	291	Corporation	19	11022625
9	Enefit Power OU	Estonia	Auvere	Keskterritooriumi/1	Ida-viru Maakond	40107	N/A	2025	$211,404,083	535	Corporation	33	17209649
10	Enefit OU	Estonia	Tallinn	Lelle Tn 22	Harju Maakond	11318	*****.ee	2005	$146,588,909	265	Corporation	33	11184032
11	Elektrum Eesti OU	Estonia	Tallinn	Maealuse Tn 2/4	Harju Maakond	12618	*****.ee	2007	$144,874,772	44	Corporation	14	11399985
12	Enefit Wind OU	Estonia	Tallinn	Lelle Tn 22	Harju Maakond	11318	*****.com	2019	$101,755,211	3	Corporation	33	14665542
13	Baltic Energy Partners OU	Estonia	Tallinn	Veerenni Tn 40a	Harju Maakond	10138	*****.eu	2006	$82,145,083	3	Corporation	6	11207916
14	Ou Utilitas Tallinna Elektrijaam	Estonia	Tallinn	Tooma Tn 14 // Vaomurru Tn 1	Harju Maakond	11415	*****.ee	2003	$75,433,732	38	Corporation	8	10938397
15	Scener OU	Estonia	Tallinn	Veerenni Tn 40a	Harju Maakond	10138	*****.eu	2009	$71,302,477	10	Corporation	5	11623709
16	Gren Tartu AS	Estonia	Tartu	Sobra Tn 54/1	Tartu Maakond	50106	N/A	2000	$56,499,376	78	Corporation	19	10641763
17	Alexela Energia Teenused AS	Estonia	Tallinn	Roseni Tn 11	Harju Maakond	10111	*****.ee	2017	$54,587,974	3	Corporation	23	14185894
18	Gaasiabi 24/7 OU	Estonia	Tallinn	Meleka Tn 7	Harju Maakond	10615	N/A	2019	$45,876,992	14	Corporation	N/A	14657471
19	PP&S OU	Estonia	Tallinn	Laki Tn 30	Harju Maakond	12915	N/A	2020	$45,876,992	14	Corporation	N/A	14942941
20	AS Gaasivork	Estonia	Tallinn	Liivalaia Tn 9	Harju Maakond	10118	*****.ee	2013	$43,273,726	36	Corporation	89	12503841
21	Gren Eesti AS	Estonia	Pärnu	Niidu Tn 24	Pärnu Maakond	80047	*****.ee?y_source=1_odc1mjk4mi00ndatbg9jyxrpb24ud2vic2l0zq==	2011	$32,941,259	137	Corporation	19	12114252
22	Adven Eesti AS	Estonia	Tallinn	Kassi Tn 13	Harju Maakond	12618	*****.ee	1996	$28,773,034	88	Corporation	105	10066299
23	Aktsiaselts Narva Soojusvork	Estonia	Narva	Oru Tn 2	Ida-viru Maakond	20203	*****.ee	1999	$28,275,649	19	Corporation	33	10549419
24	Sw Energia OU	Estonia	Paikuse	Tehnika Tn 1	Pärnu Maakond	86602	*****.ee	2010	$27,673,357	68	Corporation	4145	11963782
25	AS Utilitas Eesti	Estonia	Tallinn	Maakri Tn 19/1	Harju Maakond	10145	*****.ee	1998	$19,460,600	68	Corporation	8	10419088

Showing 25 of 1,546 companies

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Firm sizes in Estonia

Of the 1,509 Estonian energy firms with a known headcount, 1,401 (93%) have one to four people, 50 have five to nine, 39 have ten to 49 and 19 have 50 or more. Most firms turn over between $100,000 and $500,000 a year (577, 41%).

EU size bands · the grey line shows all Estonian companies

Micro under 101,451 96%
Small 10 to 4939 3%
Medium 50 to 24916 1%
Large 250+3 0.2%

Grey line: the share among all Estonian companies (97% have under ten staff).

firms turn over more than $5 million a year; 37 more than $10 million.

firms were entered in 2026.

Largest energy firms in Estonia

The biggest firms by staff and by revenue, the largest in Tallinn. Click a name for the record.

Elektrilevi OU is the largest energy firm in Estonia by headcount. 19 firms employ 50 people or more; 12 employ 100 or more.

1Tallinn854 staff
2Tallinn291 staff
3Tallinn184 staff
4Sillamäe108 staff
5Tallinn100 staff
6Tallinn100 staff
7Kunda100 staff
8Tallinn88 staff
9Võru68 staff
10Paikuse68 staff

By employee size · 1,509 firms with a known headcount

Employees	Firms	%
1-4	1,401	93%
5-9	50	3%
10-19	22	1%
20-49	17	1%
50-99	7	0.5%
100-199	7	0.5%
200-499	2	0.1%
500-999	3	0.2%
1,000+	0	0%

93% have 1 to 4 people; 17 have 20 to 49; 19 have 50 or more.

By yearly revenue (USD)

Revenue	Firms	%
< $100K	525	37%
$100K-$500K	577	41%
$500K-$1M	170	12%
$1M-$5M	86	6%
$5M-$10M	14	1.0%
$10M-$50M	20	1%
$50M-$100M	5	0.4%
$100M-$500M	10	0.7%
$500M+	2	0.1%

41% between $100,000 and $500,000; 86 between $1M and $5M; 51 above $5M.

Where in Estonia?

Tallinn has the most energy companies in Estonia (553), ahead of Tartu (76), Haabneeme (60), Narva (57) and Viljandi (53). Together the five hold half of them.

Cities by number of firms

303 Estonian cities have at least one energy firm; 18 have ten or more; 219 have exactly one. Click a city to set the lens.

How many energy companies are there in Estonia?

Energy companies and energy firms in Estonia

1,546

26 October 2026

There are 1,546 energy companies and energy firms in Estonia in our data (26 October 2026). That is one in every 243 Estonian companies. About one new firm is entered in the register every week this year (48 so far in 2026).

Structure

Single-site firms: 1,469 95%
Head offices: 77
Branch offices: 0

Classification

NACE Rev. 2 code 35. Our platform filter is SIC 4911, 4922, 4923, 4924 and 5 more.

1,070 of the 1,546 are OÜ and AS (69%); 9 are sole traders. They come from e-Business Register (äriregister) and our Estonian register data, through the Company Data API.

Energy firms in Tallinn

Tallinn has 553 energy companies and energy firms, 0.3% of all 168,501 Tallinn companies and 20% below the national share. Nine in ten Tallinn firms have fewer than five people; 11 have 50 or more. 27 new firms were entered in 2026, 0 date from before 1990.

Size

1-4 staff: 490 · 92%
5-9: 16 · 3%
10-19: 9 · 2%
20-49: 6 · 1%
50+: 11 · 2%

Legal form

Sole traders: 0 · 0%
Partnerships: 138 · 25%
OÜ and AS: 411 · 74%
Other or none: 4 · 0.7%

Of the Estonian total: 35.8%
Of all Tallinn companies: 0.3%
Against the national share: 0.8×

New

Entered 2026 so far: 27
Entered 2025: 27
Of Estonia's 2026 entries: 56.3%

Old

Before 1990: 0 · 0%
1990 or later: 553 · 100%
Of Estonia's pre-1990 firms: 0%

Reachable

Email: 43 · 8%
Phone: 61 · 11%
Website: 90 · 16%

Revenue (USD)

Under $100K: 139 · 27%
$100K-$500K: 232 · 44%
$500K-$1M: 82 · 16%
$1M and more: 70 · 13%

Largest

1854
2291
3184
4100
5100

Free Tallinn sample

Newcomers in Estonia in 2026

48 energy firms were entered in the Estonian register so far in 2026, about one per week, after 62 in 2025. Estonia as a whole saw 18,095 new companies in 2026, so this industry takes 0.3% of the inflow.

602022
802023
512024
622025
482026 so far

46 of this year's 48 are OÜ and AS.

The biggest newcomers of 2026

The year is the register entry; an established firm that changes legal form appears as new.

1Viimsi5 staff
2Tallinn3 staff
3Tallinn3 staff
4Tallinn3 staff
5Lagedi3 staff

The oldest firms in Estonia

Our data holds 0 Estonian energy firms from before 1900, 0 from before 1950 and 0 from before 1990.

1996
1. Tallinn
1996
1. Keila
1996
1. Peri
1996
1. Kuressaare
1996
1. Loo
1996
1. Maardu

Fewer than five firms date from before 1950, so the timeline starts with the oldest firms before 1990.

Older than you

Live tool

Move the slider to a year. Two live counts, scoped to this industry.

1990

Estonian energy firms date from before 1990

were entered in 1990

Sole traders or OÜ: how they are organised

One in 172 Estonian energy firms work as sole traders, against 7% of all Estonian companies. Seven in ten are OÜ and AS.

Sole traders (FIE)90.6%
Partnerships45229%
OÜ and AS1,07069%
No form on record or other151.0%

Single-site: 95%
Head offices: 77
Branches: 0

All Estonian companies: 7% sole traders, 1% partnerships, 78% OÜ and AS.

How reachable are they?

Energy firms are harder to reach than the average Estonian company: 9% list a phone number and 13% a website.

Email70 5%
Phone136 9%
Website203 13%

Grey line: all Estonian companies (email 6%, phone 12%, website 14%).

The full list with these fields is in our Estonian company database.

How they compare

Next to related industries

There are 18 technology companies for every energy firm in Estonia.

Industry	Firms	Website	1-4 staff
Technology Companies	27,897	12%	95%
Manufacturing Companies	16,054	26%	76%
Engineering Companies	4,893	16%	94%
Energy Companies	1,546	13%	91%
Industrial Companies	385	39%	56%

In other countries

Country	Firms	Per 1,000 cos.
France	242,823	16.9
The USA	163,207	2.6
India	89,687	2.3
Germany	52,431	7.7
Italy	46,669	6.6
Estonia	1,546	4.1

More countries →

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Frequently asked questions

How many energy companies are there in Estonia?

There are 1,546 energy companies and energy firms in Estonia in our data, counted on 26 October 2026. That is one in every 243 Estonian companies.

Which is the largest energy firm in Estonia?

Elektrilevi OU in Tallinn, with 854 staff. By revenue Eesti Energia AS in Tallinn leads with $357.6 million a year.

Which Estonian city has the most energy companies?

Tallinn, with 553, ahead of Tartu (76), Haabneeme (60), Narva (57) and Viljandi (53).

How many energy firms are there in Tallinn?

553, which is 0.3% of all 168,501 Tallinn companies and 20% below the national share.

How big is a typical energy firm?

Small. 93% of the 1,509 firms with a known headcount have one to four people; 19 have 50 or more. Most turn over between $100,000 and $500,000 a year.

Are Estonian energy companies sole traders or companies?

One in 172 (9) are sole traders, 29% are partnerships and 69% (1,070) are OÜ and AS.

How many energy firms started in 2026?

48 were entered in the Estonian register so far in 2026, after 62 in 2025. 46 of them are OÜ and AS.

What is the oldest energy firm in Estonia?

Adven Eesti AS in Tallinn, 1996, followed by Aktsiaselts Entek in Keila (1996) and Aktsiaselts Generaator in Peri (1996). 0 firms date from before 1900.

Which industry code covers energy companies?

Estonian energy companies are classified under NACE Rev. 2 code 35. Our platform filters them on SIC 4911 (electric services), 4922 (natural gas transmission), 4923 (natural gas transmission and distribution) and 4924 (natural gas distribution) and 5 more.

Can I download the full list?

Yes. All 1,546 firms with address, phone, email, legal form, employees, revenue and founding year, as Excel, CSV or through the API.

Discover more: related industries, in other countries

The lists closest to this one. Every industry and city in Estonia is on the Estonia page.

Energy

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