1、 If the property rights of the factory are clear and belong to the enterprise under the roof, then the problem is relatively simple and can be operated according to the normal process. (The specific application process can be consulted with local power grid companies.) So, what if the roof property belongs to someone else (rented by a company)? In this situation, Xiaogu does not recommend enterprise investment. In general, this situation is invested and constructed by third-party investors or EPC companies with certain financial strength, and then signed energy management contracts with enterprises under the roof to sell electricity to them. Before constructing the power station, sign a lease agreement with the roof owner.

二，屋頂?shù)陌惭b條件尤為重要，因?yàn)檫@將直接決定屋頂電站的安裝容量。設(shè)計(jì)前需要注意的是屋頂?shù)暮奢d計(jì)算，尤其是彩鋼瓦屋面。當(dāng)然，還有防水問題也是比較重要的。當(dāng)然，尋找的安裝公司，以上問題都相對(duì)比較好判斷。同時(shí)，屋頂?shù)牟晒庖欢ㄒ?，周圍沒有高大建筑。

2、 The installation conditions of the roof are particularly important as they directly determine the installation capacity of the rooftop power plant. Before design, it is important to pay attention to the load calculation of the roof, especially the colored steel tile roof. Of course, waterproof issues are also quite important. Of course, looking for a professional installation company makes it relatively easy to judge the above issues. At the same time, the lighting on the roof must be good, and there are no tall buildings around.

三，屋頂光伏發(fā)電項(xiàng)目能否并網(wǎng)，也是決定是否安裝的一個(gè)關(guān)鍵因素。項(xiàng)目是低壓并網(wǎng)還是升壓并網(wǎng)？廠房周邊的變壓器數(shù)量、變壓器容量、變壓器廠區(qū)布局、變壓器電壓等。當(dāng)然作為業(yè)主來說，這些問題都是需要咨詢的安裝公司。

3、 Whether rooftop photovoltaic power generation projects can be connected to the grid is also a key factor in determining whether to install them. Is the project connected to the grid at low voltage or at high voltage? The number of transformers, transformer capacity, layout of transformer factory area, transformer voltage, etc. around the factory building. Of course, as an owner, these issues require consulting with a professional installation company.

四、五，拿江蘇地區(qū)為例，目前平價(jià)上網(wǎng)的工商業(yè)項(xiàng)目，回收年限大概在4~5年左右。當(dāng)然回收年限除了考慮前期的投入成本與電站的平均發(fā)電量以外，電站的自發(fā)自用比例也同樣重要。以上段落已經(jīng)說過收益的組成，在此不繼續(xù)詳細(xì)解釋。所以，一定考慮企業(yè)在此廠房下是否長(zhǎng)期運(yùn)營(yíng)，是否短期內(nèi)有跟換廠房，或重建的計(jì)劃？企業(yè)是否有較大的用電需求，能夠合理匹配屋頂電站的總發(fā)電量？當(dāng)然，電站長(zhǎng)期穩(wěn)定的運(yùn)行還需要有較高的安裝要求、有保障且符合高質(zhì)量的光伏配套產(chǎn)品、高效的運(yùn)維服務(wù)等。

4、 Fifthly, taking the Jiangsu region as an example, the current affordable online industrial and commercial projects have a payback period of approximately 4-5 years. Of course, in addition to considering the initial investment cost and the average power generation of the power station, the proportion of spontaneous self use of the power station is also equally important. The composition of revenue has already been mentioned in the above paragraphs, and we will not continue to explain it in detail here. So, it is important to consider whether the enterprise will operate under this factory for the long term, and whether there are plans to replace or rebuild the factory in the short term? Does the enterprise have a significant electricity demand that can reasonably match the total electricity output of rooftop power plants? Of course, the long-term stable operation of the power station also requires high installation requirements, guaranteed and high-quality photovoltaic supporting products, and efficient operation and maintenance services.