一、屋頂光伏發電和地面光伏發電對比

地(di)面(mian)電(dian)(dian)(dian)(dian)站(zhan)(zhan)和屋(wu)頂(ding)分布式電(dian)(dian)(dian)(dian)站(zhan)(zhan)是(shi)目前光伏電(dian)(dian)(dian)(dian)站(zhan)(zhan)投(tou)資的(de)兩大類型(xing)。地(di)面(mian)電(dian)(dian)(dian)(dian)站(zhan)(zhan)因擁有(you)清晰(xi)的(de)產權而容易(yi)獲得金融支(zhi)持(chi)，安裝、接入方(fang)式簡單(dan)，只與電(dian)(dian)(dian)(dian)網(wang)有(you)結算(suan)關系，這些都是(shi)其優點。但(dan)同時(shi)還要看到，地(di)面(mian)電(dian)(dian)(dian)(dian)站(zhan)(zhan)存在占用大量土地(di)、補貼到位時(shi)間(jian)長等不(bu)足。此外(wai)，地(di)面(mian)電(dian)(dian)(dian)(dian)站(zhan)(zhan)還會受到電(dian)(dian)(dian)(dian)改(gai)等因素(su)的(de)影響，由于發(fa)電(dian)(dian)(dian)(dian)側放開(kai)競(jing)價上網(wang)，光伏地(di)面(mian)電(dian)(dian)(dian)(dian)站(zhan)(zhan)競(jing)爭力就會顯得嚴重不(bu)足。

另外還需要考慮(lv)到，屋頂(ding)分布(bu)式(shi)電站(zhan)往往會(hui)因產權不(bu)夠(gou)清(qing)晰，而(er)不(bu)容易獲得金融支持(chi)；同(tong)時(shi)，屋頂(ding)分布(bu)式(shi)電站(zhan)的(de)(de)安裝(zhuang)、接入方(fang)式(shi)相對復雜；其結算關系上存(cun)在屋頂(ding)業主、投資方(fang)和電網三方(fang)關系，業主有違(wei)約風險等。必須看到，不(bu)占用土(tu)地、電量(liang)消(xiao)納不(bu)受限(xian)制、首(shou)次(ci)補貼到位時(shi)間為一個季度等，都是(shi)屋頂(ding)分布(bu)式(shi)電站(zhan)的(de)(de)優勢。同(tong)時(shi)，由(you)于是(shi)直供電，屋頂(ding)分布(bu)式(shi)電站(zhan)未來(lai)會(hui)成為售電公司的(de)(de)首(shou)選。

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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射(she)，不(bu)(bu)會(hui)(hui)對人體有害。光伏發電(dian)(dian)(dian)是將光能通(tong)過半(ban)導體的特(te)性(xing)直接轉化(hua)為直流(liu)電(dian)(dian)(dian)能的，再(zai)通(tong)過逆變器將直流(liu)電(dian)(dian)(dian)轉換成可以被我們使用(yong)的交流(liu)電(dian)(dian)(dian)。其中沒有任何化(hua)學變化(hua)以及核反(fan)應(ying)，所(suo)以光伏發電(dian)(dian)(dian)是不(bu)(bu)會(hui)(hui)有輻射(she)的。光伏發電(dian)(dian)(dian)是無(wu)污染、無(wu)輻射(she)，取之不(bu)(bu)盡用(yong)之不(bu)(bu)竭的清潔能源。

光(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)組(zu)(zu)件(jian)本身在發電(dian)(dian)(dian)(dian)時并不(bu)(bu)產生任何電(dian)(dian)(dian)(dian)磁(ci)輻(fu)(fu)射(she)，但是為了將光(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)組(zu)(zu)件(jian)所發的(de)直流電(dian)(dian)(dian)(dian)轉(zhuan)變為交流電(dian)(dian)(dian)(dian)并實現(xian)和(he)電(dian)(dian)(dian)(dian)網的(de)連接(jie)，通常(chang)需(xu)要(yao)很多的(de)電(dian)(dian)(dian)(dian)力設備和(he)電(dian)(dian)(dian)(dian)子器(qi)件(jian)，這些設備在運行時會(hui)(hui)影響(xiang)周圍的(de)電(dian)(dian)(dian)(dian)磁(ci)環(huan)境(jing)。 這里(li)用(yong)光(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)發電(dian)(dian)(dian)(dian)系統(tong)和(he)電(dian)(dian)(dian)(dian)磁(ci)環(huan)境(jing)指代(dai)存在于光(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)系統(tong)周邊(bian)的(de)由于光(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)系統(tong)運行產生的(de)電(dian)(dian)(dian)(dian)磁(ci)現(xian)象的(de)總和(he)。 經科學測定，太陽能(neng)光(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)發電(dian)(dian)(dian)(dian)系統(tong)的(de)電(dian)(dian)(dian)(dian)磁(ci)環(huan)境(jing)低于各項指標的(de)限值。在工頻段，太陽能(neng)光(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)電(dian)(dian)(dian)(dian)站電(dian)(dian)(dian)(dian)磁(ci)環(huan)境(jing)甚至低于正常(chang)使(shi)用(yong)的(de)常(chang)用(yong)家用(yong)電(dian)(dian)(dian)(dian)器(qi)時產生的(de)量值；因(yin)為光(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)組(zu)(zu)件(jian)是沒有(you)(you)(you)輻(fu)(fu)射(she)的(de)，相反(fan)它可以(yi)反(fan)射(she)一些太陽光(guang)(guang)(guang)(guang)里(li)面的(de)有(you)(you)(you)害(hai)的(de)紫外(wai)線，所以(yi)光(guang)(guang)(guang)(guang)伏(fu)(fu)(fu)組(zu)(zu)件(jian)不(bu)(bu)僅不(bu)(bu)會(hui)(hui)有(you)(you)(you)危害(hai)還而會(hui)(hui)反(fan)射(she)一部分有(you)(you)(you)害(hai)的(de)紫外(wai)線，對人體(ti)是沒有(you)(you)(you)危害(hai)的(de)。