一、屋頂光伏發電和地面光伏發電對比

地(di)面(mian)電(dian)站(zhan)和(he)屋頂分布式電(dian)站(zhan)是(shi)目前光伏電(dian)站(zhan)投資(zi)的(de)兩大(da)類型。地(di)面(mian)電(dian)站(zhan)因(yin)擁有(you)清晰的(de)產權而容易獲(huo)得(de)金融支持(chi)，安(an)裝、接入(ru)方式簡(jian)單(dan)，只與電(dian)網有(you)結算(suan)關系，這些都是(shi)其優點。但同時還要看到(dao)，地(di)面(mian)電(dian)站(zhan)存(cun)在(zai)占用大(da)量(liang)土地(di)、補貼到(dao)位時間長等不足。此外(wai)，地(di)面(mian)電(dian)站(zhan)還會(hui)受到(dao)電(dian)改(gai)等因(yin)素的(de)影(ying)響，由于發電(dian)側(ce)放開競價上網，光伏地(di)面(mian)電(dian)站(zhan)競爭(zheng)力就會(hui)顯(xian)得(de)嚴重不足。

另(ling)外還(huan)需(xu)要考慮(lv)到，屋(wu)頂(ding)分布(bu)式(shi)電站(zhan)往往會因產權不夠清晰(xi)，而(er)不容易獲得金融(rong)支持；同時，屋(wu)頂(ding)分布(bu)式(shi)電站(zhan)的安裝、接入方(fang)式(shi)相對復雜(za)；其結算關(guan)(guan)系上存在(zai)屋(wu)頂(ding)業主、投資(zi)方(fang)和電網三(san)方(fang)關(guan)(guan)系，業主有違約風險等。必須(xu)看到，不占用土地、電量消納不受限制、首次(ci)補貼(tie)到位(wei)時間(jian)為一(yi)個(ge)季度等，都是(shi)屋(wu)頂(ding)分布(bu)式(shi)電站(zhan)的優勢。同時，由于(yu)是(shi)直供電，屋(wu)頂(ding)分布(bu)式(shi)電站(zhan)未來會成為售電公(gong)司的首選(xuan)。

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二、屋頂光伏發電有沒有輻射

屋頂光伏發電沒有輻(fu)射，不會對人體有害。光(guang)伏(fu)發(fa)(fa)(fa)電(dian)(dian)是將(jiang)光(guang)能(neng)通(tong)過半導體的(de)特性(xing)直(zhi)接轉(zhuan)化(hua)為直(zhi)流(liu)電(dian)(dian)能(neng)的(de)，再通(tong)過逆變(bian)器將(jiang)直(zhi)流(liu)電(dian)(dian)轉(zhuan)換(huan)成(cheng)可以被我們使用(yong)的(de)交流(liu)電(dian)(dian)。其(qi)中沒有任(ren)何化(hua)學變(bian)化(hua)以及核反應(ying)，所以光(guang)伏(fu)發(fa)(fa)(fa)電(dian)(dian)是不會有輻(fu)射的(de)。光(guang)伏(fu)發(fa)(fa)(fa)電(dian)(dian)是無(wu)污染、無(wu)輻(fu)射，取之不盡(jin)用(yong)之不竭的(de)清潔能(neng)源。

光(guang)(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)(fu)組件(jian)本身在(zai)發電(dian)(dian)(dian)時(shi)并不(bu)產生任(ren)何電(dian)(dian)(dian)磁(ci)(ci)輻(fu)射(she)，但(dan)是(shi)(shi)為了(le)將光(guang)(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)(fu)組件(jian)所(suo)發的(de)(de)(de)(de)(de)直流電(dian)(dian)(dian)轉變為交(jiao)流電(dian)(dian)(dian)并實(shi)現(xian)和電(dian)(dian)(dian)網的(de)(de)(de)(de)(de)連接(jie)，通常(chang)需要很多的(de)(de)(de)(de)(de)電(dian)(dian)(dian)力設備和電(dian)(dian)(dian)子器(qi)件(jian)，這些設備在(zai)運行時(shi)會影響(xiang)周(zhou)圍的(de)(de)(de)(de)(de)電(dian)(dian)(dian)磁(ci)(ci)環(huan)(huan)境(jing)。 這里(li)用光(guang)(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)(fu)發電(dian)(dian)(dian)系(xi)(xi)統(tong)(tong)和電(dian)(dian)(dian)磁(ci)(ci)環(huan)(huan)境(jing)指(zhi)代存在(zai)于光(guang)(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)(fu)系(xi)(xi)統(tong)(tong)周(zhou)邊的(de)(de)(de)(de)(de)由于光(guang)(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)(fu)系(xi)(xi)統(tong)(tong)運行產生的(de)(de)(de)(de)(de)電(dian)(dian)(dian)磁(ci)(ci)現(xian)象的(de)(de)(de)(de)(de)總和。 經科學(xue)測定(ding)，太(tai)陽(yang)能(neng)光(guang)(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)(fu)發電(dian)(dian)(dian)系(xi)(xi)統(tong)(tong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)磁(ci)(ci)環(huan)(huan)境(jing)低于各項指(zhi)標的(de)(de)(de)(de)(de)限值。在(zai)工(gong)頻段，太(tai)陽(yang)能(neng)光(guang)(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)(fu)電(dian)(dian)(dian)站電(dian)(dian)(dian)磁(ci)(ci)環(huan)(huan)境(jing)甚至(zhi)低于正常(chang)使用的(de)(de)(de)(de)(de)常(chang)用家用電(dian)(dian)(dian)器(qi)時(shi)產生的(de)(de)(de)(de)(de)量(liang)值；因為光(guang)(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)(fu)組件(jian)是(shi)(shi)沒有(you)輻(fu)射(she)的(de)(de)(de)(de)(de)，相反(fan)它可以反(fan)射(she)一些太(tai)陽(yang)光(guang)(guang)(guang)(guang)(guang)里(li)面的(de)(de)(de)(de)(de)有(you)害的(de)(de)(de)(de)(de)紫外(wai)線(xian)，所(suo)以光(guang)(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)(fu)組件(jian)不(bu)僅不(bu)會有(you)危害還而會反(fan)射(she)一部(bu)分(fen)有(you)害的(de)(de)(de)(de)(de)紫外(wai)線(xian)，對人(ren)體是(shi)(shi)沒有(you)危害的(de)(de)(de)(de)(de)。