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The technology is there – it’s just a matter of implementation »Power electronics is the enabling technology that will allow us to balance the world’s energy consumption with sustainable energy resources and in the long term reduce the demand for fossil fuels to zero « says Professor Dushan Boroyevich University Distinguished Professor Emeritus at CPES Center of Power Electronics Systems Virginia Tech USA His motivation is clear climate change and the catastrophic consequences that are already becoming apparent such as floods or huge forest fires Boroyevich continues »We have the means to stop climate change by phasing out fossil fuels « No small task given the numbers Boroyevich cites three quarters of the emissions that contribute to global warming come from burning fossil fuels to produce energy Out of that only 20 percent is used to generate electricity the remaining 80 percent of emissions are also based on burning fossil fuels but not for electricity generation but for heating for cars for coal production and so on So the first step is to convert these consumers to electric energy Boroyevich is convinced that it is possible to make this transition over the next 30 years and continues »To supply these 80 percent of new electric consumers four additional power grids will be needed « This is without considering the fact that energy consumption is expected to increase significantly by 2050 »because on the one hand the world’s population continues to grow and on the other hand it is expected that even previously poor countries will achieve a certain level of prosperity which typically goes hand in hand with higher energy consumption « says Boroyevich He says it is positive that about a fifth of electrical energy today already comes from renewable sources and that »energy production from renewable sources has doubled in the XXI century « Boroyevich says However he also stresses that in order to reach netzero energy production from renewable sources must increase eightfold over the next 25 years Renewables are cheap Boroyevich points out »All three main sustainable forms of energy - solar wind and geothermal - are already cheaper than all other energy sources today « And the amount of energy available is sufficient According to Boroyevich the Earth receives 10 000 times more energy from the Sun each day than the total primary energy consumption of all humanity combined or about 1 7 EJ day An area of photovoltaic panels covering 10 to 20 percent of the world’s uninhabited hot deserts could alone economically generate enough energy for a all sustainable energy supply ever needed not to mention hydroelectric wind geothermal and nuclear power Transporting energy is critical Even if you can generate enough energy from the Sun in the uninhabited deserts the Im age PhotoG ranary stock adobe com Power electr onics 8 PCIM Magazine 02 2025