Our activities

The sheer diversity of SIG’s activities and its commitment to the environment greatly enriches our company.

Our areas of expertise


Want to know more about SIG’s recent achievements, projects and future plans?


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Key figures 2018

Key figures


of our electricity is 100% renewable and Swiss

61,800 clients

customers supplied with heat or cooling via thermal means

77 millions de m³

million m3 of wastewater treated in our WWTPs

236,804 tonnes

tonnes of waste treated


of Geneva residents served by the GIS fibre optic network

52 million m³

of drinking water distributed

Our commitment to sustainable development

Sustainable development
Respect de l'environnement

Respecting the environment

SIG is committed to reducing the environmental impact of its activities, products and services, and to being exemplary in this area. How? Through the use of innovative technologies, complying with legal requirements, implementing the best environmental standards as well as preventing pollution.

Équité sociale

Social equality

Mindful of the personal development of its employees and the quality of its products, SIG invests in continuous training: with training, internships and apprenticeships regularly organised. We are also take care to ensure that the men and women are treated no differently to each other, with equal skills and experience paid the equivalent salary.

Efficacité économique

Economic efficiency

SIG supports the canton's innovation and economic development, in particular through rigorous financial management: we have stabilised pour sales in terms of water, gas and electricity. We are also striving to reduce our reliance on resources, and we are investing in infrastructure maintenance and development.

Based on images

Based on images