Switzerland added a record amount of new photovoltaic capacity in 2024, pushing total installed capacity past 7 GW as the country works toward its Energy Strategy 2050 target of 45 TWh of annual solar generation. The installer market remains highly fragmented, with roughly 2,500 active solar companies employing around 15,000 people nationwide, but a small group of national players and utility-backed installers stand out for their scale and reach across all three language regions. This article presents a curated Top 10 of PV Installers in Switzerland, selected for overall scale and significance within the Swiss solar market.

The full research dataset, including verified contact information, LinkedIn profiles, certification status, and installed capacity figures for all 300+ companies, is available exclusively through the Renewables.Digital Research Platform.

Top 10 – Curated Selection

Sorted by overall company scale and market presence. Founding year and installed capacity were not available in the source data for this selection. Management names and precise revenue figures are intentionally excluded from this overview.

Industry Overview: Solar PV Installation in Switzerland

Switzerland’s PV installer market is dominated by thousands of small, regionally focused firms, but a handful of nationally active energy solution providers and utility-backed installers stand apart in scale and reach. The companies in this curated selection reflect both sides of that divide, from installers active across all three language regions to established cantonal and municipal energy providers that have added solar to their core electricity business.

National Energy Solution Providers

Helion Energy, headquartered in Cham and part of the AMAG Group since 2022, is the largest solar installer in the country, active in all Swiss language regions and offering integrated solutions spanning solar panels, battery storage, heat pumps, and EV charging. tritec, formed through the merger of Tritec, Winsun, and Alectron between 2022 and 2024, traces its roots to some of the earliest solar installations built in Switzerland in the late 1980s and now operates as a national player supported by a large network of installation partners.

Utility-Backed and Regional Installers

BE Netz, based in Lucerne, is one of the country’s established specialist installers, while Solstis, headquartered in Lausanne, operates as a wholly owned subsidiary of utility group BKW, serving homeowners, commercial clients, and industrial customers across the German-speaking part of the country. AGROLA, part of the fenaco cooperative group, brings a large existing customer and distribution network from its core energy retail business into the solar space.

Cantonal and Municipal Utilities

Repower, Groupe E, Regionalwerke Baden, EKZ Eltop, and OIKEN Solutions represent Switzerland’s tradition of cantonal and municipal energy utilities extending into residential and commercial solar installation alongside their core electricity supply business, a model that gives them established customer relationships and grid expertise across their respective regions.

Market Outlook

With Switzerland’s solar sector continuing to grow rapidly and skilled labour remaining in short supply, consolidation among the thousands of small regional installers is likely to continue, following the pattern already seen with tritec’s mergers. National energy solution providers and utility-backed installers are well positioned to benefit from this consolidation given their existing scale, brand recognition, and access to capital.

This list is an excerpt from our larger database of PV installers across Europe.