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Experts say that sun and wind are the richest sources of clean, renewable energy. But ocean waves also create powerful, clean energy. So, the U.S Department of Energy has announced a $1.5 million-dollar prize for the winner of a competition on how to capture that energy. The Department of Energy says that waves and tides along U.S. coasts create about 1,420 terawatt-hours of energy a year. That is equal to the amount of energy produced by more than 330 nuclear power factories.
* source = 원천, 근원/ renewable energy = 재생 가능 에너지(태양열, 수력, 풍력 등)/ capture = 점유하다; 포획하다; 억류하다/ tide = 조수, 밀물과 썰물; 조류/ terawatt hour = 테라와트시(時). 1조(兆)와트시(時), 1012Wh
But today’s technologies can only capture about 20 percent of the energy from ocean waves. Jose Zayas is the director of the Wind and Water Power Technologies Office at the Department of Energy. He says 20 percent is too low for an investment in ocean wave energy to be economical. He says it needs to be up in the high 30 percent to 40 percent. “…we believe that once you achieve that then the economic competiveness of this industry really comes to life and that’s really the target that we are shooting for.”
* the Department of Energy = 미국 에너지국/ economical = 경제적인, 실속 있는/ economic competiveness = 경제적 경쟁력/ come to life = 활기를 띠다; 살아 움직이다/ shoot for ~ = ~을 얻으려고(달성하려고) 애쓰다
