4321Electrical installation

2,548 companies

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

Sub-industries

Largest companies by revenue

1.Smartecon OÜ
12382136, Lasnamäe linnaosa
Revenue 2025
€20.2M
+24%
Net profit
€958.7K
+84%
Employees
31
2.Optimus Systems AS
11096397, Kesklinna linnaosa
Revenue 2025
€18.7M
+6.1%
Net profit
€123.2K
−76%
Employees
80
3.EL Marine OÜ
14843104, Peetrimõisa küla
Revenue 2025
€12.5M
+177%
Net profit
€190.3K
−21%
Employees
73
4.Osaühing Newin
11349496, Tartu linn
Revenue 2025
€12.4M
+66%
Net profit
€638.9K
−20%
Employees
33
5.OÜ S-Power
12334752, Vanamõisa küla
Revenue 2025
€11.3M
−53%
Net profit
€1.7M
−48%
Employees
2
6.Sunergia OÜ
16068632, Tabasalu alevik
Revenue 2025
€4.7M
+102%
Net profit
€501.8K
+239%
Employees
10
7.Päikeseratas OÜ
14052704, Tartu linn
Revenue 2025
€4.3M
+576%
Net profit
€143.5K
+34%
Employees
2
8.aktsiaselts RANTELL
10273874, Tartu linn
Revenue 2025
€4.2M
−21%
Net profit
€157.1K
−58%
Employees
30
9.A-Kaabel OÜ
11126841, Kristiine linnaosa
Revenue 2025
€4.2M
+3.3%
Net profit
€194.3K
−23%
Employees
37
10.Elec Engineering OÜ
14295619, Kristiine linnaosa
Revenue 2025
€4M
+58%
Net profit
€189K
−39%
Employees
11

#	Company	Reg.	Revenue	Change	Net profit	Change	Employees
1	Smartecon OÜ 12382136, Lasnamäe linnaosa	2012	€20,229,445 2025	+24%	€958,678	+84%	31 at quarter end
2	Optimus Systems AS 11096397, Kesklinna linnaosa	2005	€18,653,614 2025	+6.1%	€123,165	−76%	80 annual average (FTE)
3	EL Marine OÜ 14843104, Peetrimõisa küla	2019	€12,468,621 2025	+177%	€190,289	−21%	73 annual average (FTE)
4	Osaühing Newin 11349496, Tartu linn	2007	€12,391,891 2025	+66%	€638,878	−20%	33 annual average (FTE)
5	OÜ S-Power 12334752, Vanamõisa küla	2012	€11,337,011 2025	−53%	€1,703,441	−48%	2 annual average (FTE)
6	Sunergia OÜ 16068632, Tabasalu alevik	2020	€4,740,051 2025	+102%	€501,800	+239%	10 annual average (FTE)
7	Päikeseratas OÜ 14052704, Tartu linn	2016	€4,266,628 2025	+576%	€143,513	+34%	2 annual average (FTE)
8	aktsiaselts RANTELL 10273874, Tartu linn	1997	€4,218,994 2025	−21%	€157,113	−58%	30 annual average (FTE)
9	A-Kaabel OÜ 11126841, Kristiine linnaosa	2005	€4,168,465 2025	+3.3%	€194,319	−23%	37 annual average (FTE)
10	Elec Engineering OÜ 14295619, Kristiine linnaosa	2017	€4,035,111 2025	+58%	€189,019	−39%	11 annual average (FTE)

Includes

This class includes the installation, repair and maintenance of electrical systems in all types of buildings and civil engineering structures. This class includes: - installation of: • electrical wiring and fittings • telecommunication wiring • computer network and cable television wiring, including fibre-optic • satellite dishes • lighting systems • fire alarms • burglar-alarm systems • street lighting and electrical signals • airport runway lighting • photovoltaic systems on buildings • energy storage systems • baseboard heating - installation of wall-mounted chargers for electric vehicles

Excludes

construction of distribution lines for electricity and telecommunication, see 4222 construction of solar and wind energy farms, see 4222 construction of stations for distribution of electricity (e.g. for electrical vehicles), see 4222 installation of lightning conductors, see 4324 monitoring and remote monitoring of electronic security systems (e.g. burglar alarms and fire alarms, including their installation and maintenance), see 8009