Compare installers: contact details, locations and Tukes register entries in one place.
We list 5 companies in Lohja. Of those, 4 are in the Tukes register (checked 11 September 2026). The brands that come up most often are Growatt and Mitsubishi Electric.
Below is each company’s own page, with its contact details and the area it serves, and its offices on the map.
5 results
Etelä-Suomen Lämpöasennus Oy is an HVAC company based in Lohja, serving the entire Uusimaa region. The company specializes in the sale, installation, and maintenance of air source heat pumps and air-to-water heat pumps. Their selection includes well-known brands such as Mitsubishi Electric, Panasonic, Gree, and Daikin. Services also include solar panel installations.
In the Tukes register: operating right e3, valid until 12.3.2029. Checked 11.9.2026.
Aurinkosähkö Laakko Oy is an electrical installation company based in Lohja, serving the Uusimaa and Southwest Finland regions. The company specializes in turnkey solar power system sales and installations. Their offering includes high-quality GEF and SolarWatt solar panels as well as electric vehicle charging stations. Certified installers ensure a safe and professional result.
In the Tukes register: operating right A. Checked 11.9.2026.
Ahmoon Vesi ja Lämpö Oy provides comprehensive HVAC services in Karkkila. We specialize in plumbing, heating systems, domestic water circulation solutions, and heat pumps. We serve residential, commercial, and industrial clients with turnkey project delivery. Our services also include fire extinguisher maintenance and solar power systems.
In the Tukes register: operating right A kaasu. Checked 11.9.2026.
Suomen Aurinkoratkaisut Oy (est. 2017) specializes in the sale and installation of solar power systems for households, companies, and farms. They offer turnkey services including system design, permits, installation, and user training. Their range includes high-quality inverters and panels (e.g., Orima, Fronius, Huawei). The company operates in the Salo region and surrounding areas.
Suomen Sähkö- ja Kiinteistötekniikka Oy performs electrical and refrigeration installations, maintenance, and repairs comprehensively in the Uusimaa region. We also offer electrical services, air conditioning and heating, renewable energy solutions, as well as telecommunications and automation services.
In the Tukes register: operating right A (sj). Checked 11.9.2026.
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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
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 5 companies in Lohja, and 4 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.