A group of scientist from Energy Watch Group and LUT University of Finland claimed that a global transition to 100% renewable energy is possible across the electricity, heat, transport and desalination sectors by 2050, and it can be done for cheaper than the current global energy system. Solar and wind energy are “the new workhorses of the future” in this new projected global energy system, with solar making up an astonishing 69% of the total energy supply by 2050, requiring an enormous total installed capacity of 63,400 gigawatts.
According to Electrek news, The study relies on existing technology and battery storage, with an emphasis on electrification and decentralization. While fossil fuels and nuclear energy phase out completely in this scenario, electricity consumption will account for more than 90% of the primary energy consumption by 2050.
But there are plenty of questions one could ask after diving into the study, the reliance on solar energy in this scenario seems like a good place to focus. It’s a massive undertaking to get global solar capacity to the necessary 63,400 GW in this model, as current global estimates place capacity somewhere near 500 GW. Solar capacity grew nearly 100 GW last year — that would have to increase about 20x annually, on average, over the next 30 years.
But another way of looking at it is through exponential growth — if solar capacity grows about 17 percent each year, that would also put the world about on track to meet those marks. That rate makes the goal seem more attainable.
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Date: Apr 17, 2019 @ 09:22
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