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Wirsol

international solar energy provider

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 16, 2026
Entity authorityQ510999
Source-derived summary

WIRSOL Solar AG (German pronunciation: [ˈvɪʁzɔl zoˈlaːɐ̯ ʔaːˈɡeː]) is an international solar energy provider, specialized in the planning, financing, construction and maintenance of solar power plants of any size. The headquarters of the company is in Germany. Further company offices are located in Spain, Italy, Great Britain, Belgium, Switzerland, Canada, USA, China, Malaysia and the Maldives.

History

The company was founded in Waghäusel (District of Karlsruhe in Germany) in February 2003 by Markus Wirth, Hans Wirth and Stefan Riel as the "Hausrenovierer GmbH", where the headquarters of the firm are also located. Having specialized in the area of photovoltaics, the firm was renamed "Wirth Solar AG" in January 2004 and from this arose the name "Wirsol Solar AG" in 2007. In the same year, the company opened the Bruhrain solar test park in close proximity to the company premises. A total surface area of 12 hectares made it the biggest solar park in the stare of Baden-Württemberg at the time. With 31,000 modules installed, the plant generates an output of up to 2.258 MWp and provides 500 households with electricity. This corresponds to a yearly CO2 saving of around 1300 tons.

In 2010, the board of directors was expanded by company founders Markus Wirth and Stefan Riel.

Editorial summary

The public source identifies “Wirsol” as international solar energy provider. This brief keeps that definition visible, then builds a research path around Wirsol, international and solar.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—2003, 2004, 2007, 1300—that can be checked directly. The linked authority record independently contributes the date 2003-01-01. Its value is orientation rather than verdict, with Wirsol, international and solar providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Wirsol”, the useful work is to connect “international solar energy provider” to the records capable of establishing context and consequence.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jun 16, 2026. The linked authority identifier is Q510999. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2003, 2004, 2007 and 1300.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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  2. Expand the search: follow Wirsol primary sources, Wirsol archive and Wirsol research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

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Source & attribution

This entry incorporates text from Wirsol” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.