How many solar panels do I need to power up my office?
Anyone knows what kind of solar panels (wattage , ambers, Volts )should I purchase to have sufficient power for a Laptop , A modem/router And a fax machine?
You need to work out first how much power you will need . The power consumption will be clearly statted on the equipment. Usually on a label on the underside. So add up the power ratings on all the appliances you will want on together. Including lights, heating, tools etc. You won't need everything on at once so look to decide you maximum power requirement.
Next you need to set an amount of hours per day you will want to run the power. So power (in KW- 1000 watts) X hours per day = total KW/H needed. That tells you what you need.
You will need to know the power rating for your solar panels i.e 50W and multiply that by the average hours of daily sunlight for your area. i.e. (50W X 4hrs Sun)/1000 = panel KW/H. Remember sunlight hours can dramatically vary depending on winter/summer so make sensible allowance for your needs in estimating the daily hours of sun.
Finally all you need to do is divide the KW/H needed by the solar panel KW/H to get the number of panels you need. i.e. NEED 2KW/H by PANEL 0.2KW/H = 10 solar panels.
Depending on the system you create. i.e. battery quality, inverter efficiency etc there will be inherent losses in the charge/use cycle. You will need to allow 50%-70% additional panels to account for losses.
Best not try and 'give it a go' if you are not 100% sure what you are doing. get some expert advice and help. It's not exepensive.
Checkout http://www.greenpowereasy-review.com/
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