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you might want solar panels to save the planet. but, as is the case with hybrid vehicles, you certainly should not do so to save money. for instance, a homeowner whose electric bill is $100 a month and who buys a system for about $54,000 will have to wait for 11 to 22 years before he sees any savings. in addition, figure in the 1,580 a year, your cash investment would have been making had you left he money in a conservative investment like a government bond. only when electricity costs are unusually high, the system will start to make any sense. for example, only the person living in the boiling hot desert of california, where the financial incentives of the state for installing solar panel are said to be the most attractive, and paying $250 a month to stay col would break even in a short time.

이 지문 내용자체가 전체적으로 너무 어렵네요... 무엇을 말하려는지 의도는 알겠는데, 예시 들어놓은게 너무 어려워요.....
특히, 밑줄친 부분..... 왜 갑자기 정부 채권과 같은 신중한 투자에서의 돈을 넣었더라면 해마다 벌어들이고있었을 당신의 투자금 1,580달러를 계산에 넣어봐라.. 고 나오는지... 왜 투자금 1580달러의 투자금을 계산에 넣어봐라했는지.. 의미파악이
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꼭 좀 알려주세요...ㅠ.... 친절하고 정확한 답변 꼭 부탁드립니다..... ㅜㅠ