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Company: Shandong Zhongjing Solar Energy Co.,Ltd

Factory address:No.6 Taikang Road, Economic & Development Zone of Weishan County, Jining City, Shandong Province, China

Contact person:Jeffery Yan

Mobile:0086 15206715713

Tel: 0086 537 5031068

Fax: 0086 537 5031002

Email: international@cnsdpv.com

Skype: jefferypv1029

WhatsApp: 008615206715713

WeChat: 008615206715713

Website: http://www.cnsdpv.com

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Calculation Formula Of Solar Panels

1. First, the number of watts per day consumed (including the loss of the inverter): If the conversion efficiency of the inverter is 90%, when the output power is 100W, the actual output power should be 100W / 90% = 111W; if used for 5 hours per day, the power consumption is 111W * 5 hours = 555Wh.

2. Calculate the solar panel: the daily effective sunshine time is 6 hours, and then take into account the charging efficiency and the loss of charging process, the solar panel output power should be 555Wh / 6h / 70% = 130W. 70% of which is the actual use of solar panels during charging.

Capacity of solar panels

AC light source: light source power * daily electricity time = solar panel power * annual average sunshine time * battery conversion rate * inverter efficiency

DC light source: light source power * daily electricity time = solar panel power * annual average sunshine time * battery conversion rate