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Market in the canton of Solothurn
Open federal statistics on construction in the canton: how much public and private clients invest, which building measures the Buildings Programme supports and how many photovoltaic plants are added. The figures describe the whole construction market, not just tenders.
Construction investment
Construction investment in the canton of Solothurn by type of client, in millions of francs at current prices
Year
Public clients
Private clients
2019
390.9
1’235.3
2020
309.3
1’157.9
2021
267.9
1’030.3
2022
266.1
1’115.3
2023
257.3
964.1
2024
327.8
1’041.4
Work backlog for 2025 (projects under construction at the end of 2024): public clients 322.3, private clients 668.0 million francs.
First estimate of the FSO for 2025 from the initial data, provisional: public clients +19.6 %, private clients +2.5 % compared with the year before.
2024 by type of work: civil engineering 286.4, building construction 1’082.8 million francs.
Source: Federal Statistical Office (FSO), annual construction and housing statistics: construction investment and work backlog by type of client and canton (T 9.4.1.29) and by type of work and canton (T 9.4.1.27), at current prices. Database as of 21.07.2026, retrieved on 09.11.2026.Dataset T 9.4.1.27 (opens in a new tab)Dataset T 9.4.1.29 (opens in a new tab)
Buildings Programme
With the Buildings Programme, the Confederation and the cantons support building measures such as insulating the building envelope, replacing the heating, complete renovations and energy-efficient new buildings.
Building measures supported by the Buildings Programme in the canton of Solothurn, by year of commitment
Year
Supported measures
Committed contributions (CHF m)
of which applied for by public bodies
2020
1’030
7.7
9
2021
1’370
10.2
16
2022
1’698
12.8
11
2023
1’676
13.0
16
2024
1’309
11.1
17
2025
1’203
12.0
23
Source: Swiss Federal Office of Energy (SFOE), The Buildings Programme – source data of the cantons for direct measures. As of 27.08.2026, retrieved on 09.11.2026. Counts and sums per canton and year: analysis by TEXFY.
– no figure: no entries or fewer than 5. This way no figure describes a single plant or measure.
New photovoltaic plants in the canton of Solothurn, by year of commissioning
Year
Plants
Capacity (MW)
2020
516
10.6
2021
686
15.0
2022
997
28.2
2023
1’885
52.0
2024
2’127
68.0
2025
1’476
47.9
Counted are the plants in operation today that are registered in the Swiss guarantee of origin system (all from 30 kVA, smaller ones voluntarily) or receive federal support. The data are updated every month.
Source: Swiss Federal Office of Energy (SFOE), Electricity production plants. As of 15.10.2026, retrieved on 09.11.2026. Number and capacity per canton and year: analysis by TEXFY.Dataset (opens in a new tab)
One-off remuneration 2023: 1’406 photovoltaic plants in the canton received a total of 13.7 million francs (by year of payment).
Source: Swiss Federal Office of Energy (SFOE), One-time investment contributions for photovoltaic systems. As of 16.07.2024, retrieved on 09.11.2026.Dataset (opens in a new tab)
Awards of the last 12 months
What was awarded in the last 12 months: canton of Solothurn.