一、屋頂光伏發電和地面光伏發電對比

地(di)面(mian)(mian)(mian)電(dian)(dian)站(zhan)和屋頂分布式電(dian)(dian)站(zhan)是目前光伏電(dian)(dian)站(zhan)投資的(de)兩(liang)大(da)類型。地(di)面(mian)(mian)(mian)電(dian)(dian)站(zhan)因擁有(you)清晰的(de)產權而容易獲得金融支持，安(an)裝、接入(ru)方式簡單，只與(yu)電(dian)(dian)網有(you)結算關系，這些都是其優點。但同時(shi)還(huan)要看到，地(di)面(mian)(mian)(mian)電(dian)(dian)站(zhan)存在占用大(da)量土地(di)、補(bu)貼到位(wei)時(shi)間長等(deng)不足。此外，地(di)面(mian)(mian)(mian)電(dian)(dian)站(zhan)還(huan)會受(shou)到電(dian)(dian)改等(deng)因素(su)的(de)影響(xiang)，由于發電(dian)(dian)側放開(kai)競(jing)價上網，光伏地(di)面(mian)(mian)(mian)電(dian)(dian)站(zhan)競(jing)爭力就(jiu)會顯(xian)得嚴重(zhong)不足。

另外還(huan)需(xu)要考慮到(dao)，屋(wu)頂分布式(shi)(shi)(shi)電站往(wang)往(wang)會因產權不(bu)(bu)夠清(qing)晰(xi)，而不(bu)(bu)容易獲得(de)金融支持；同時，屋(wu)頂分布式(shi)(shi)(shi)電站的安裝、接(jie)入(ru)方(fang)式(shi)(shi)(shi)相對(dui)復雜；其結(jie)算關(guan)系上存(cun)在屋(wu)頂業(ye)(ye)主、投資(zi)方(fang)和(he)電網三方(fang)關(guan)系，業(ye)(ye)主有違約風(feng)險(xian)等。必須(xu)看(kan)到(dao)，不(bu)(bu)占用土地、電量消納(na)不(bu)(bu)受限制、首次補貼到(dao)位時間為一(yi)個季(ji)度(du)等，都是(shi)(shi)屋(wu)頂分布式(shi)(shi)(shi)電站的優勢。同時，由于是(shi)(shi)直供電，屋(wu)頂分布式(shi)(shi)(shi)電站未來會成為售電公司的首選。

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二、屋頂光伏發電有沒有輻射

屋頂光伏發電沒有(you)輻(fu)(fu)射(she)，不會(hui)對人體(ti)有(you)害(hai)。光伏(fu)發(fa)(fa)電(dian)(dian)是(shi)將光能通過半(ban)導體(ti)的(de)特(te)性直接轉化(hua)為直流電(dian)(dian)能的(de)，再通過逆變器將直流電(dian)(dian)轉換成可(ke)以(yi)(yi)被(bei)我們(men)使用的(de)交流電(dian)(dian)。其中沒有(you)任何化(hua)學變化(hua)以(yi)(yi)及(ji)核反應，所以(yi)(yi)光伏(fu)發(fa)(fa)電(dian)(dian)是(shi)不會(hui)有(you)輻(fu)(fu)射(she)的(de)。光伏(fu)發(fa)(fa)電(dian)(dian)是(shi)無污染(ran)、無輻(fu)(fu)射(she)，取之不盡用之不竭(jie)的(de)清潔能源。

光(guang)伏(fu)(fu)組(zu)件本身(shen)在(zai)發電(dian)(dian)(dian)(dian)(dian)時并不(bu)產(chan)生(sheng)任何(he)電(dian)(dian)(dian)(dian)(dian)磁(ci)輻(fu)射，但(dan)是為了將(jiang)光(guang)伏(fu)(fu)組(zu)件所發的(de)(de)(de)(de)(de)(de)直流(liu)電(dian)(dian)(dian)(dian)(dian)轉變為交流(liu)電(dian)(dian)(dian)(dian)(dian)并實現和電(dian)(dian)(dian)(dian)(dian)網的(de)(de)(de)(de)(de)(de)連接(jie)，通常(chang)需要很多的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)力設(she)備(bei)和電(dian)(dian)(dian)(dian)(dian)子(zi)器件，這些(xie)設(she)備(bei)在(zai)運行時會影(ying)響周(zhou)圍的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)環境(jing)。 這里(li)用光(guang)伏(fu)(fu)發電(dian)(dian)(dian)(dian)(dian)系(xi)(xi)統(tong)(tong)和電(dian)(dian)(dian)(dian)(dian)磁(ci)環境(jing)指代存在(zai)于(yu)光(guang)伏(fu)(fu)系(xi)(xi)統(tong)(tong)周(zhou)邊的(de)(de)(de)(de)(de)(de)由于(yu)光(guang)伏(fu)(fu)系(xi)(xi)統(tong)(tong)運行產(chan)生(sheng)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)現象的(de)(de)(de)(de)(de)(de)總和。 經(jing)科學測定(ding)，太陽能光(guang)伏(fu)(fu)發電(dian)(dian)(dian)(dian)(dian)系(xi)(xi)統(tong)(tong)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)環境(jing)低(di)于(yu)各項指標(biao)的(de)(de)(de)(de)(de)(de)限值。在(zai)工(gong)頻(pin)段，太陽能光(guang)伏(fu)(fu)電(dian)(dian)(dian)(dian)(dian)站(zhan)電(dian)(dian)(dian)(dian)(dian)磁(ci)環境(jing)甚至(zhi)低(di)于(yu)正常(chang)使用的(de)(de)(de)(de)(de)(de)常(chang)用家用電(dian)(dian)(dian)(dian)(dian)器時產(chan)生(sheng)的(de)(de)(de)(de)(de)(de)量值；因為光(guang)伏(fu)(fu)組(zu)件是沒有輻(fu)射的(de)(de)(de)(de)(de)(de)，相(xiang)反(fan)它可以反(fan)射一些(xie)太陽光(guang)里(li)面(mian)的(de)(de)(de)(de)(de)(de)有害的(de)(de)(de)(de)(de)(de)紫外線(xian)，所以光(guang)伏(fu)(fu)組(zu)件不(bu)僅不(bu)會有危(wei)害還而會反(fan)射一部分有害的(de)(de)(de)(de)(de)(de)紫外線(xian)，對人體是沒有危(wei)害的(de)(de)(de)(de)(de)(de)。