42221Construction of utility projects for electricity and telecommunications

420 companies

This activity has special requirements (e.g. a licence or notice).

Largest companies by revenue

1.AS Connecto Infra
10722319, Kristiine linnaosa
Revenue 2025
€119.4M
−9.3%
Net profit
€18.3M
+17%
Employees
153
2.LEONHARD WEISS OÜ
12083348, Lasnamäe linnaosa
Revenue 2025
€118.6M
−8.9%
Net profit
€6.1M
−1.5%
Employees
450
3.Arrow ECS Baltic OÜ
12141384, Kristiine linnaosa
Revenue 2025
€79.6M
+37%
Net profit
€3.2M
+16%
Employees
59
4.Enersense Aktsiaselts
11445550, Lasnamäe linnaosa
Revenue 2025
€47.5M
−19%
Net profit
€2.1M
−52%
Employees
306
5.AS INF Ehitus
11097051, Soodevahe küla
Revenue 2025
€39.7M
−11%
Net profit
€373.3K
−55%
Employees
125
6.AS Connecto Eesti
17100148, Kristiine linnaosa
Revenue 2025
€29.3M
—
Net profit
€692K
+2,768,100%
Employees
229
7.E-Service Aktsiaselts
10360030, Nõmme linnaosa
Revenue 2025
€16.1M
−2.1%
Net profit
€757.7K
−26%
Employees
149
8.Aktsiaselts Elektritsentrum
10166300, Nõmme linnaosa
Revenue 2025
€15.8M
+29%
Net profit
€186.6K
+28%
Employees
98
9.aktsiaselts Eleväli
10274158, Viljandi linn
Revenue 2025
€15.1M
+73%
Net profit
€1M
+329%
Employees
38
10.Kagu Elekter OÜ
11632588, Võru linn
Revenue 2025
€13.3M
+31%
Net profit
€945.6K
+43%
Employees
39

#	Company	Reg.	Revenue	Change	Net profit	Change	Employees
1	AS Connecto Infra 10722319, Kristiine linnaosa	2001	€119,376,000 2025	−9.3%	€18,255,000	+17%	153 annual average (FTE)
2	LEONHARD WEISS OÜ 12083348, Lasnamäe linnaosa	2011	€118,604,340 2025	−8.9%	€6,124,159	−1.5%	450 annual average (FTE)
3	Arrow ECS Baltic OÜ 12141384, Kristiine linnaosa	2011	€79,645,048 2025	+37%	€3,152,089	+16%	59 annual average (FTE)
4	Enersense Aktsiaselts 11445550, Lasnamäe linnaosa	2007	€47,538,832 2025	−19%	€2,126,215	−52%	306 annual average (FTE)
5	AS INF Ehitus 11097051, Soodevahe küla	2005	€39,744,821 2025	−11%	€373,338	−55%	125 annual average (FTE)
6	AS Connecto Eesti 17100148, Kristiine linnaosa	2024	€29,310,000 2025	—	€692,000	+2,768,100%	229 annual average (FTE)
7	E-Service Aktsiaselts 10360030, Nõmme linnaosa	1998	€16,089,051 2025	−2.1%	€757,661	−26%	149 annual average (FTE)
8	Aktsiaselts Elektritsentrum 10166300, Nõmme linnaosa	1996	€15,820,767 2025	+29%	€186,635	+28%	98 annual average (FTE)
9	aktsiaselts Eleväli 10274158, Viljandi linn	1997	€15,125,105 2025	+73%	€1,002,618	+329%	38 annual average (FTE)
10	Kagu Elekter OÜ 11632588, Võru linn	2009	€13,254,966 2025	+31%	€945,636	+43%	39 annual average (FTE)

Includes

This class includes the construction of distribution lines for electricity and telecommunication and related buildings and structures that are integral part of these systems. This class includes: - construction of civil engineering structures for: long-distance and urban communication and power lines; power plants (e.g. solar and wind energy farms) - construction of stations for distribution of electricity (e.g. for electric vehicles)

Also includes

general construction of antennas and transmission stations general construction of power stations general construction, including repair of electricity cable lines general construction, including repair of electricity underground or submerged cable lines (long-distance lines) general construction, including repair of overhead communication lines and cable connection systems, including aboveground and submerged cable networks general construction, including repair of overhead power lines, including railway electricity supply lines installation of wind turbines maintenance and repair of electricity and communication networks

Excludes

construction of electricity overhead lines and conductor rails for railways, see 42121 construction of dams and dykes for hydroelectric power plants, see 42911 installation of photovoltaic systems on buildings, see 43211 installation of wall-mounted chargers for electric vehicles, see 43211 project management activities related to civil engineering works, see 71121