一、屋頂光伏發電和地面光伏發電對比

地(di)(di)(di)面電(dian)(dian)站(zhan)(zhan)(zhan)和(he)屋頂(ding)分(fen)布式電(dian)(dian)站(zhan)(zhan)(zhan)是目(mu)前(qian)光(guang)伏(fu)電(dian)(dian)站(zhan)(zhan)(zhan)投資的兩大類型。地(di)(di)(di)面電(dian)(dian)站(zhan)(zhan)(zhan)因(yin)擁有清晰的產權(quan)而(er)容易獲得金(jin)融支持，安裝(zhuang)、接入方式簡單，只(zhi)與電(dian)(dian)網有結算關系，這些都是其優點(dian)。但同(tong)時還要看到(dao)，地(di)(di)(di)面電(dian)(dian)站(zhan)(zhan)(zhan)存(cun)在占用大量土地(di)(di)(di)、補貼到(dao)位時間(jian)長等(deng)不足。此(ci)外(wai)，地(di)(di)(di)面電(dian)(dian)站(zhan)(zhan)(zhan)還會(hui)受到(dao)電(dian)(dian)改等(deng)因(yin)素的影響(xiang)，由于發電(dian)(dian)側放開(kai)競價上網，光(guang)伏(fu)地(di)(di)(di)面電(dian)(dian)站(zhan)(zhan)(zhan)競爭力就(jiu)會(hui)顯得嚴(yan)重不足。

另外(wai)還需要考慮到(dao)(dao)，屋(wu)(wu)頂分(fen)布(bu)式(shi)(shi)電站往往會(hui)因產權(quan)不(bu)夠清(qing)晰，而不(bu)容易獲(huo)得(de)金(jin)融支持；同時(shi)，屋(wu)(wu)頂分(fen)布(bu)式(shi)(shi)電站的(de)(de)安(an)裝(zhuang)、接入(ru)方(fang)式(shi)(shi)相(xiang)對復雜(za)；其結算關系上存在屋(wu)(wu)頂業主、投資(zi)方(fang)和電網(wang)三方(fang)關系，業主有(you)違約風險(xian)等(deng)(deng)。必須看到(dao)(dao)，不(bu)占用土地(di)、電量消納不(bu)受限(xian)制、首次補貼到(dao)(dao)位時(shi)間為(wei)一個季度等(deng)(deng)，都是屋(wu)(wu)頂分(fen)布(bu)式(shi)(shi)電站的(de)(de)優勢(shi)。同時(shi)，由于是直供(gong)電，屋(wu)(wu)頂分(fen)布(bu)式(shi)(shi)電站未來會(hui)成(cheng)為(wei)售電公司(si)的(de)(de)首選。

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二、屋頂光伏發電有沒有輻射

屋頂光伏發電沒(mei)有(you)(you)輻(fu)(fu)射(she)(she)，不會對人體有(you)(you)害。光伏發(fa)(fa)電(dian)(dian)(dian)是(shi)將(jiang)(jiang)光能通過半導體的(de)(de)(de)特性直(zhi)(zhi)接轉化(hua)為直(zhi)(zhi)流電(dian)(dian)(dian)能的(de)(de)(de)，再通過逆(ni)變器將(jiang)(jiang)直(zhi)(zhi)流電(dian)(dian)(dian)轉換成可以被我們使用的(de)(de)(de)交流電(dian)(dian)(dian)。其(qi)中沒(mei)有(you)(you)任(ren)何化(hua)學變化(hua)以及核反應(ying)，所以光伏發(fa)(fa)電(dian)(dian)(dian)是(shi)不會有(you)(you)輻(fu)(fu)射(she)(she)的(de)(de)(de)。光伏發(fa)(fa)電(dian)(dian)(dian)是(shi)無(wu)污染、無(wu)輻(fu)(fu)射(she)(she)，取之不盡(jin)用之不竭(jie)的(de)(de)(de)清潔(jie)能源。

光(guang)(guang)伏(fu)(fu)組(zu)件(jian)本身在(zai)發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)時并不產生任何電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)輻射(she)，但是(shi)為(wei)了將光(guang)(guang)伏(fu)(fu)組(zu)件(jian)所發(fa)(fa)的(de)(de)直流電(dian)(dian)(dian)(dian)(dian)(dian)轉(zhuan)變(bian)為(wei)交(jiao)流電(dian)(dian)(dian)(dian)(dian)(dian)并實(shi)現和電(dian)(dian)(dian)(dian)(dian)(dian)網(wang)的(de)(de)連接(jie)，通常(chang)需要很多(duo)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)力(li)設備和電(dian)(dian)(dian)(dian)(dian)(dian)子器件(jian)，這(zhe)些設備在(zai)運行時會(hui)(hui)影響周(zhou)圍的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)環(huan)境(jing)。 這(zhe)里用光(guang)(guang)伏(fu)(fu)發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)系統和電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)環(huan)境(jing)指代存在(zai)于光(guang)(guang)伏(fu)(fu)系統周(zhou)邊的(de)(de)由于光(guang)(guang)伏(fu)(fu)系統運行產生的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)現象的(de)(de)總和。 經科(ke)學測(ce)定，太陽能光(guang)(guang)伏(fu)(fu)發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)系統的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)環(huan)境(jing)低(di)于各項指標的(de)(de)限值。在(zai)工頻段(duan)，太陽能光(guang)(guang)伏(fu)(fu)電(dian)(dian)(dian)(dian)(dian)(dian)站電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)環(huan)境(jing)甚至低(di)于正常(chang)使用的(de)(de)常(chang)用家(jia)用電(dian)(dian)(dian)(dian)(dian)(dian)器時產生的(de)(de)量值；因為(wei)光(guang)(guang)伏(fu)(fu)組(zu)件(jian)是(shi)沒有(you)輻射(she)的(de)(de)，相反(fan)它可以反(fan)射(she)一些太陽光(guang)(guang)里面(mian)的(de)(de)有(you)害(hai)的(de)(de)紫外(wai)線(xian)，所以光(guang)(guang)伏(fu)(fu)組(zu)件(jian)不僅(jin)不會(hui)(hui)有(you)危(wei)害(hai)還而(er)會(hui)(hui)反(fan)射(she)一部分有(you)害(hai)的(de)(de)紫外(wai)線(xian)，對(dui)人(ren)體是(shi)沒有(you)危(wei)害(hai)的(de)(de)。