An environmental declaration provides information on the composition of all ewz electricity products. It contains the life cycle assessment values according to different assessment methods as well as the emission values for CO₂, nitrogen oxides and dust.
The Environmental impact points (EIPs) shown below indicate the level of environmental pollution caused by electricity products. The EIPs, which are calculated according to the ecological scarcity method developed in Switzerland, take into account a wide range of environmental impacts.
The environmental impact of ewz electricity products for private households in the basic supply is significantly lower than that of the Swiss electricity supplier mix. As a comparison, in the case of nuclear power, the undesirable environmental impact is many times higher.
Compared to the Swiss supplier electricity mix, the greenhouse gas (GHG) emissions of ewz electricity products are up to 78% lower. This is due to the exclusive use of renewable energy sources.
Photovoltaic (PV) systems show higher GHG footprint values compared to other renewable energy sources. This is mainly attributable to silicon extraction and the manufacturing of solar modules. As a result, the emissions associated with the ewz-solarzüri participation model are higher than those of other ewz electricity products. Nevertheless, ewz.solarzüri still performs better than the average Swiss supplier electricity mix.
We have been actively rebuilding the ewz power production portfolio since 2008. We will continue to pursue this course consistently in the coming years.
Our aim is to invest around CHF 200 million per year in infrastructure projects. This will enable us to safeguard the fabric of existing assets for the long term while ensuring sustainable growth and the expansion of renewable energy production.
CO₂-eq is a unit of measure used to standardise the greenhouse gas impact of different climate gases. Here’s an example: Methane (CH₄) is 25 times more damaging to the climate than CO₂. The greenhouse gas potential of 1 g of methane therefore corresponds to 25 g of CO₂-eq.
