“Thermonuclear fusion already works: it is in the sky, it is the Sun”
Altitude record with SolarStratos, tour of Lake Titicaca aboard PlanetSolar II: in 2025, Raphaël Domjan once again pushed the boundaries of solar energy. Interview
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How to reduce the effects of global warming in urban centers
During the summer, and especially during heat waves, cities become real heat islands. Aware of the risks this poses to health, cities are thinking about how to transform their public spaces.
Do Small Modular Reactors open a new path for nuclear energy?
Two opposing models are facing off. On the one hand, high-power reactors such as EPRs, which rely on the centralization of production with high-power units; on the other hand, modern, small reactors with an electrical capacity ranging between 10 MW and 300 MW.
Energy transition: the complex challenge of subsidies
"Investing in renewable energy proves to be more profitable than maintaining the current system of subsidies for fossil fuels. According to the UN, a global reduction in pollution could save up to $4.2 trillion per year by 2030," explains Jean-Yves Pidoux.
Switzerland must closely follow developments in new reactors.
Interview with Alexander Puhrer, head of nuclear production at Alpiq.
The inevitable end of nuclear power or a necessary solution?
"Nuclear power is a subject that divides, imbued with emotions and political debate. In the face of the challenges of the energy transition and our growing electricity needs, can we afford to exclude this technology permanently?" asks Michael Frank, director of AES.
White hydrogen: an energy resource whose potential is still underestimated.
Because of its high efficiency and sustainability, hydrogen could play an important role in the energy transition. Aside from its industrial production, it exists naturally in the form of deposits that are still largely untapped. Explainer.
Nuclear power does not constitute competition for renewable energies
<p>Interview with Laurent Ducrest, Head of Thermal Production and Environment at Groupe E.</p>
Energy infrastructures in Switzerland: challenges of an unavoidable transition
"Switzerland is committed to an ambitious energy transition. Based on the increasing electrification of our society, this change requires a thorough modernization of the country's energy infrastructure," explains Thomas Lier, head of the GEFISWISS Energy Transition Fund.
The profitability of new power plants in Switzerland would not be guaranteed.
Interview with Stefan Klute, head of nuclear at BKW.
CO₂ sequestration in Switzerland: a promising avenue or a dead end?
A recent study by the Swiss Federal Institute of Technology in Zurich has raised doubts about the feasibility of CO₂ storage in Switzerland. If in situ mineralization proves impossible, the solution lies in deeper reservoirs, within saline aquifers.
Energy transition: what if Switzerland finally dared to take a few risks
Instead of considering cuts to research funding and support for start-ups, the Confederation should invest more and accelerate the country's transition to renewable energies.
Autonomous and sustainable habitat: study of an ideal model
Architects, contractors and private individuals are increasingly getting involved in the construction of eco-friendly housing. Guided tour of a completed project, a symbol of a sustainable approach undertaken in a self-taught way.