What ESTERNA does

Esterna Elekter OÜ is an Estonian electrical construction contractor headquartered in Tallinn with approximately 20 years of operating history (since 2006) and a workforce of 11–50 employees. The company specializes in outdoor electrical works (välielektritööd) for 0.4–110 kV networks, including cable and overhead power lines, switchgear, substations, and street lighting. Its technical capabilities extend into renewable energy electrical infrastructure — over 70MW of solar park electrical works have been built and operated since 2020, including 8MW+ with tracker systems — and into wind park and energy storage facility construction up to 110kV.

The company has expanded its revenue model beyond traditional project-based electrical contracting by launching the Kiurendi fiber access network service, which uses PON (passive optical network) technology with 1:32 splitter architectures to deliver dedicated fiber infrastructure to telecommunications service providers. Pricing for telecom operators includes a €500 one-time connection fee, €300 per additional splitter, and €6/month per end-user maintenance fee, with an SLA of 72-hour fault resolution. End-user residential pricing for the EU-subsidized Narva-Jõesuu broadband project is set at €200 incl. VAT per connection, covering 101 properties.

Esterna operates exclusively in Estonia (Laki 30, Tallinn), serving three primary B2B segments — telecommunications service providers, solar and wind energy developers, and municipalities — via direct project contracting and government-subsidized tendering (notably the EU NextGenerationEU high-speed broadband access network program). Revenue is project-based for electrical and renewable construction work, supplemented by a small but structurally newer subscription/recurring component from Kiurendi. No named large enterprise customer logos are disclosed; customer engagement is diversified across the three segments but constrained by the single-country footprint and project-lumpy revenue cadence.

Name

ESTERNA

Legal name

Esterna Elekter OÜ

Website

https://esterna.ee

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

11–50 employees

Short description

Esterna Elekter OÜ is a Tallinn-based Estonian electrical contractor (founded 2006, 11–50 staff) building 0.4–110 kV outdoor power networks, 70MW+ of solar park electrical works, and Kiurendi PON fiber access infrastructure for telecom operators, renewable developers, and municipalities across Estonia.

Ownership category

akta.pro rank

Product category

Electrical Infrastructure Construction

NAICS

Electric Power Generation, Transmission and Distribution (2211), Architectural, Engineering, and Related Services (5413)

SIC

Electrical Work (1731), Electric Services (4911)

akta.pro primary industry

Overhead Distribution Line Construction (MV/LV) (EUAEACAA)

akta.pro secondary industries

Underground Distribution (Cable, Duct Bank & Vault) EPC (EUAEACAB), Street Lighting & Area Lighting EPC / Maintenance (EUAEACAH), Transmission line EPC & construction (overhead) (EUADAKAA), Wind Power Plant EPC (Onshore/Offshore) (EUAEAAAF)

Keywords

• Electrical construction services
• Solar park installation
• Fiber optic networks
• Power grid infrastructure
• Renewable energy construction

Headquarters

HQ city

Tallinn

HQ country

Estonia

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. Electrical Construction Projects: Project-based revenue from constructing outdoor electrical infrastructure (0.4–110 kV networks) including cable lines, overhead lines, switchgear, substations, and street lighting for municipalities, developers, and commercial clients.
2. Solar and Wind Park Electrical Works: Electrical construction services for solar parks (over 70MW built since 2020) and wind parks and energy storage facilities up to 110kV. Revenue is project-based, potentially including ongoing operations and maintenance for installed solar parks.
3. Fiber Access Network Services (Kiurendi): Monthly recurring revenue from providing and maintaining fiber optic access infrastructure to telecommunications service providers. Includes connection fees (500 EUR one-time), splitter services, and monthly fees per end-user (6 EUR/month).
4. Telecommunications Infrastructure: Communication works including fiber optic cable installation, splicing, and duct installation (aerial and underground) for telecommunications networks.
5. Operation, Maintenance and Consulting: Electrical installation operation management, maintenance, and technical consulting services. Includes preparation of operational plans, regular inspections, mapping, and maintenance.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels1 record

Core offering

Esterna Elekter OÜ is a professional electrical construction company that builds outdoor electrical networks (0.4–110 kV cable and overhead lines, switchgear, substations, street lighting), constructs electrical infrastructure for solar parks, wind parks and energy storage facilities, and deploys fiber optic telecommunications access networks (PON technology) for telecom service providers. The company offers integrated design, construction, operation, maintenance, and consulting services, generating both project-based revenue and recurring monthly fees from its Kiurendi fiber access service.

Product overview

Esterna Elekter OÜ operates as a professional electrical construction company with approximately 20 years of experience, offering a unified portfolio of integrated services centered on outdoor electrical work (välielektritööd). The core offering combines electrical installation construction (0.4-110 kV), electrical system design, operation and maintenance services, and street lighting construction. Complementary services include solar park construction (70MW+ built), renewable energy solutions for wind and storage (up to 110kV), fiber optic telecommunications infrastructure (Kiurendi), and high-speed internet network construction. The company also provides electrical consultation to deliver complete solutions from a single provider.

Differentiator

Problem solved

Functional benefit

Products and services

• Electrical Installation Construction (Elektripaigaldiste ehitus) Construction of electrical installations including cable and overhead lines, panels, switching devices, and substations for 0.4–110 kV external networks, serving project developers, municipalities, energy companies, and commercial clients in Estonia since 2006.
• Electrical Installation Design (Elektripaigaldiste projekteerimine) Design of electrical systems covering power lines, substations, external networks, and street lighting infrastructure, provided as part of Esterna's integrated design-build offering for project developers, municipalities, and energy clients.
• Electrical Installation Operation and Maintenance (Elektripaigaldiste käit ja teenindus) Operation, maintenance, monitoring, switching, control, and compliance services for electrical installations, including preparation of operational plans, regular inspections, mapping, and safety requirement compliance for installed infrastructure.
• Street Lighting Construction (Tänavavalgustuse ehitus) Design and construction of street lighting solutions for municipal and commercial applications across Estonia.
• Solar Park Construction (Päikeseparkide ehitus) Construction and operation of solar parks exceeding 70MW in Estonia, including over 8MW of tracker-equipped installations, with electrical work up to 110kV voltage, serving solar park developers and energy companies.
• Renewable Energy Electrical Services (Taastuvenergeetika) Renewable energy sector services including solar park electrical work, wind park electrical construction, and energy storage station installations up to 110kV voltage, supporting renewable energy developers in Estonia.
• Kiurendi Fiber Access Network Service Telecommunications network service providing fiber optic access network infrastructure to telecom service providers using PON technology, including distribution cabinet installation, splitter connections (1:32 splitter preferred), fiber-to-end-user links, and ongoing maintenance under Kiurendi agreements with monthly recurring fees per end-user.
• High-Speed Internet Broadband Infrastructure (Kiire internet) Construction of high-capacity electronic communications access networks in subsidized eligible areas providing ultra-fast fiber internet connectivity, including civil works, fiber installation, splitter installation, and last-mile connections to residential properties (e.g., Narva-Jõesuu city, Vaivara village, 101 properties).
• Electrical Consultation (Elektrialane konsultatsioon) Technical consulting services for electrical work organization, planning, construction, and maintenance support, provided to project developers, municipalities, and commercial clients as part of Esterna's full-service offering.

Quantifiable outcome

• Over 70MW of solar parks built and operated since 2020, including over 8MW with tracker systems
• +1 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Caverion: Finnish-headquartered building solutions and infrastructure services provider covering electrical distribution, substation work, and telecom infrastructure. Adjacent peer with overlapping capabilities and Nordic/Baltic presence.
• ABB (Electrification segment): Global leader in electrification, switchgear, transformers, and substation systems. Adjacent as a broad incumbent whose equipment Esterna specifies and installs in its 0.4–110 kV projects.
• Bravida (Estonia/Nordics): Large Nordic multi-technical installer providing electrical contracting among other building systems. Broader portfolio than Esterna but a direct competitor for electrical and telecom infrastructure scopes in the Baltics.

Others

• Tele2 Estonia: Estonian telecom operator that is both a customer-type for Esterna's Kiurendi fiber access network and a counterpart for last-mile broadband access. Comparable in fiber broadband deployment in Estonia.

Direct peers

• Eltel Group: Eltel Group is a Nordic-Baltic infrastructure service company building and maintaining power and telecom networks. Directly comparable to Esterna across distribution grid EPC, fiber rollout, and substation services in the Baltic region.
• ONE Nordic (formerly ONE): Swedish electrical infrastructure contractor performing substation, distribution line, and telecom fiber services in the Nordics. Comparable scope of outdoor electrical works and HV capability.
• Leonhard Weiss Estonia: German construction group with Baltic operations executing overhead line, cable, substation, and street lighting projects in Estonia. Direct EPC peer for similar utility and municipality contracts.
• Netel (Netel AB): Netel is a Swedish-based infrastructure contractor specializing in electrical distribution, fiber networks, and telecom rollouts across the Nordics. Closely mirrors Esterna's combination of grid EPC + fiber construction + O&M.

Regional players

• Empower (Eesti Energia subsidiary): Estonian-Owned electrical contracting and maintenance firm serving the Baltic distribution and industrial markets. Direct regional peer in electrical installation and renewable energy infrastructure.
• Eltel Networks (Lithuania/Latvia): Eltel's Lithuania/Latvia units operate as direct regional peer for distribution grid and telecom fiber rollouts. Comparable in scale and project profile to Esterna.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ESTERNA