Compare installers: contact details, locations and Tukes register entries in one place.
We list 16 companies in Oulu. Of those, 10 are in the Tukes register (checked 11 September 2026). The brands that come up most often are Daikin, Mitsubishi Electric and Huawei.
Below is each company’s own page, with its contact details and the area it serves, and its offices on the map.
16 results
Hammarin Sähkö Oy is Finland's oldest electrical company (est. 1909), based in Oulu. As a full-service electrical house, they offer comprehensive electrical installations, design, and contracting (S1 class). Their shop and online store provide lighting, electrical supplies, appliance spare parts, and maintenance services.
In the Tukes register: operating right A (sj). Checked 11.9.2026.
Serves all of Finland
Tukes-certified cooling appliance business specializing in energy-efficient heating solutions in the Oulu region. The product range includes air source heat pumps, air-to-water heat pumps, water heaters, and solar panels. The company offers comprehensive services from planning to installation and maintenance, selling well-known brands such as Mitsubishi Electric, Toshiba, and Panasonic.
In the Tukes register: operating right e3, valid until 12.3.2029. Checked 11.9.2026.
A Finnish family company with decades of experience in roof renovations and solar power plant installations. The company offers turnkey solar panel systems, including a roof condition check before installation. The primary area of operation is mainly Lapland, Northern Ostrobothnia, Kainuu, and North Karelia.
Serves all of Finland
An energy sector company specializing in energy solutions. The main products include solar panels, solar panel batteries, heating solutions, and charging stations for electric cars. The company offers turnkey installation services throughout Finland.
✅ Tukes-certified Oulu-based refrigeration specialist focused on property cooling, heat pump, and refrigeration systems. The company sells, installs, and services leading brands in the industry. Services also include comprehensive maintenance, and they hold an electrical contracting license (S3).
The company states it is in the Tukes register. We have not confirmed this against the register.
Loistox Oy is a company specializing in solar power and the energy sector, which designs, sells, and installs solar power systems, air-to-water heat pumps, and air-source heat pumps on a turnkey basis. The company serves the entire Finnish territory, providing solutions for private homes, businesses, and farms.
In the Tukes register: operating right A (sj). Checked 11.9.2026.
Oulun Lämpöpumppuhuolto is an auxiliary company name for LVI-Torvela Ky (Business ID: 0829794-5). The company offers HVAC services and specializes in the sale, installation, and maintenance of heat pumps in the Oulu region. LVI-Torvela Ky was established in 1991.
Serves all of Finland
Solarum Suomi Oy is a Tukes-certified service company specializing in solar energy and heat pumps. They sell, design, and install solar panel systems, air-to-water heat pumps, and battery storage solutions on a turnkey basis. Their services cover private homes, housing companies, and businesses throughout Finland.
In the Tukes register: operating right A. Checked 11.9.2026.
Serves all of Finland
Solarvoima Oy is a specialist company founded in 2014, focusing on solar power systems and property batteries. They provide high-quality turnkey installations for detached houses, housing companies, and commercial properties throughout Finland. The company employs its own experienced installers and prioritizes high-quality workmanship and customer satisfaction.
In the Tukes register: operating right A. Checked 11.9.2026.
Serves all of Finland
Sunpanels Oy provides high-quality solar energy systems for households, businesses, farms, and housing companies, backed by over 15 years of import and 10 years of installation experience. Services include turnkey installations, energy storage, and reserve market solutions. We prioritize quality, honesty, and customer satisfaction. Our installers are Tukes-certified.
Serves all of Finland
Pohjoisen Sähkö ja Kiinteistö Oy (A-Maailma) is a Tukes-certified electrical contractor based in Oulu, Finland. Specializing in solar power systems and energy storage solutions, the company offers nationwide installation services for residential, commercial, and housing association clients. Their expertise also covers general electrical installations and design.
In the Tukes register: operating right A. Checked 11.9.2026.
✅ Tukes-certified Wirmax is a modern building technology group offering comprehensive HVAC, electrical, automation, and security solutions. We serve households, companies, and housing associations with maintenance, installation, and contracting needs. The group employs over 100 professionals and operates in Uusimaa, Central Finland, and Northern Finland.
In the Tukes register: operating right A (sj). Checked 11.9.2026.
Serves all of Finland
✅ Tukes-certified company specializing in energy-efficient heating and cooling solutions. LämpöYkkönen supplies and installs heat pumps and solar panels for homes and larger properties throughout Finland, making the transition to renewable energy easy on a turnkey basis.
In the Tukes register: operating right A. Checked 11.9.2026.
Serves all of Finland
Lämpöpartio is a Finnish company specializing in energy renovations and heating solutions. It offers solutions based on renewable energy, such as air-to-water heat pumps and solar power, for single-family homes and housing associations throughout Finland. The company utilizes its own installation concept, which allows for a quick replacement of the old heating system.
In the Tukes register: operating right A. Checked 11.9.2026.
An electrical company operating in the Oulu region, offering comprehensive electrical installation, renovation, and contracting services to both private and corporate customers. Services also include the installation of air source heat pumps, solar panels, and charging stations for electric cars. The company serves everything from small installations to large projects with over 20 years of experience.
In the Tukes register: operating right A. Checked 11.9.2026.
Serves all of Finland
Kotisol Oy is a company specializing in the installation of solar power systems, serving private houses, companies, and farms throughout Finland. It offers comprehensive "turnkey" installation services through its partners and has completed over 5,000 energy renovations. The company's electricians have the appropriate contracting rights.
The company states it is in the Tukes register. We have not confirmed this against the register.
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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
For Oulu, a system tilted 40° and facing south yields about 870 kWh/kWp a year, varying by roughly ±51 kWh/kWp between years (PVGIS 5.3 (EC JRC), 3 September 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 16 companies in Oulu, and 10 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.