Axpo’s chair Thomas Sieber, favours three to four gas-fired power plants to secure Switzerland’s electricity supply. The electricity company’s preferred scenario combines hydropower, other renewable energy and gas. Gas-fired power plants have major advantages because they can be built relatively quickly and bring flexibility to the system, Sieber said in an interview with the CH-Media group’s newspapers published on Monday. However, he stressed that favourable conditions must be created and legal adjustments made so that they could be built. +Get the most important news from Switzerland in your inbox At the same time, the continued operation of existing nuclear power plants remains central. “This gives us time to expand other capacities and, from an economic perspective, is also the most cost-effective option for winter electricity in the next few years or even decades,” said Sieber. Swiss nuclear plants can remain operational Axpo estimates that existing Swiss nuclear plants in …