Compare installers: contact details, locations and Tukes register entries in one place.
We list 3 companies in Kotka. Of those, 2 are in the Tukes register (checked 11 September 2026).
Below is each company’s own page, with its contact details and the area it serves, and its offices on the map.
3 results
A Finnish pioneer in building technology services. ESP is a group focused on building technology contracting, maintenance, and upkeep. Services include turnkey contracting, HVAC & electrical contracting, maintenance services, energy management, and building automation. Operating widely in Southern and Central Finland.
In the Tukes register: operating right A (sj). Checked 11.9.2026.
✅ Tukes-certified full-service heating company specializing in heat pump solutions. Operating since 2008, the company sells, installs, and services Bosch, Thermia, and Mitsubishi Electric geothermal, air-to-water, and air-to-air heat pumps. The service area covers the Imatra, Lappeenranta, Kotka, and Kouvola regions.
In the Tukes register: operating right A öljy. Checked 11.9.2026.
Redin Teho Group is an electrical contractor operating in the Lappeenranta and Kotka regions, serving the public sector, construction companies, housing associations, and industry. The group consists of Redin Oy and Sähköliike Teho Oy, providing strong electrical expertise, contracting, and maintenance services.
The company states it is in the Tukes register. We have not confirmed this against the register.
Enter your postal code and the service. Before you send anything you will see which companies your request goes to – at most three.
Published prices across Finland run 1,000–1,800 €/kWp. 1,000–1,400 €/kWp turnkey — a vendor’s stated range (1komma5.com, 2026). 1,000–1,800 €/kWp turnkey, by equipment quality — a vendor’s stated range (grivolt.fi, 2026). Usually quoted separately: scaffolding or a lift, fall protection and work on the electrical panel.
Sources:1komma5.com, 2026; grivolt.fi, 2026
Household tax credit: 35% of the labour share of a company invoice, up to €1,600 per person per year, with a €150 own share (Verohallinto, 10 February 2026). The government has proposed raising this to 40% and €2,100 for 2026–2027, retroactively from 1 January 2026 (HE 113/2026 vp, Eduskunta, 11 June 2026). Parliament has not passed the bill, and the tax administration still writes about it in the conditional (Verohallinto, 16 June 2026).
Sources:Verohallinto, 10 February 2026; Eduskunta, 11 June 2026; Verohallinto, 16 June 2026
Across Finland the range is 776–940 kWh/kWp, and it is not a clean north-south gradient: coastal Oulu out-yields inland Tampere and Jyväskylä, because cloud climatology matters more than latitude (PVGIS 5.3 (EC JRC), 3 September 2026). What decides the payback is not the yield but how much of it you use yourself: in a detached house that is 50–80% (Motiva, 30 December 2025).
Sources:PVGIS 5.3 (EC JRC), 3 September 2026; Motiva, 30 December 2025
We list 3 companies in Kotka, and 2 of them are in the Tukes register (checked 11 September 2026). The map above shows which of them work nearest to you; open a company’s own page for its contact details and service area.