CityHero
Optisizer

Optisizer

Solar installer

About Optisizer

Optisizer operates in the field of solar technology in St. Gallen and is located at Wehrstrasse 2. What stands out: alongside its role as a solar installer and supplier of solar systems, the company is also classified as a software firm – here, solar technology meets digital tools.

The classic solar business is about the planning, supply and implementation of photovoltaic systems and the equipment needed to generate solar power. The link to software points to a data-driven approach, in which the design, sizing or optimisation of systems is supported by digital solutions – for precise and efficient results.

Optisizer thus appeals both to end customers who want to install a solar system and to specialists and businesses in the St. Gallen area who want to benefit from technically sound, software-supported planning.

Opening hours

Opening hours
Monday07:30 – 12:00, 13:15 – 17:00
Tuesday07:30 – 12:00, 13:15 – 17:00
Wednesday07:30 – 12:00, 13:15 – 17:00
Thursday07:30 – 12:00, 13:15 – 17:00
Friday07:30 – 12:00, 13:15 – 16:00
SaturdayClosed
SundayClosed

Address & contact

Wehrstrasse 2
9015 St. Gallen

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Key facts

Optisizer (Solar installer) is located at Wehrstrasse 2, 9015 St. Gallen. Opening hours: Mon–Thu 07:30–12:00 and 13:15–17:00, Fri 07:30–12:00 and 13:15–16:00, Sat–Sun closed. In the Hero Score for solar installers in St. Gallen, Optisizer ranks 7 of 9.

Address
Wehrstrasse 2, 9015 St. Gallen
Opening hours
Mon–Thu 07:30–12:00 and 13:15–17:00, Fri 07:30–12:00 and 13:15–16:00, Sat–Sun closed
Phone
+41 71 314 02 44
Hero-Score
Rank 7 of 9 in St. Gallen
2 more facts
Category
Solar installer
Website
optisizer.ch

Source: CityHero directory · data as of August 2026.

Frequently asked questions

What is the address of Optisizer?

The address is Wehrstrasse 2, 9015 St. Gallen. CityHero lists 9 solar installers in St. Gallen in total.

When is Optisizer open?

Optisizer is open as follows: Mon–Thu 07:30–12:00 and 13:15–17:00, Fri 07:30–12:00 and 13:15–16:00, Sat–Sun closed. It is open 5 days a week and closed on Saturday and Sunday.

How late is Optisizer open?

Optisizer stays open latest Monday to Thursday, until 17:00. The earliest opening is 07:30 (Monday to Friday).

Is Optisizer open on Sundays?

No, Optisizer is closed on Sundays. It is also closed on Saturday.

How do I get a quote from Optisizer?

By phone on 071 314 02 44. Website: optisizer.ch. You can also send Optisizer a free, no-obligation request via CityHero.

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