The Renewable Energy Hub Forum

Renewable Energy => Solar PV => Topic started by: Zarostulus on December 03, 2015, 03:50:13 PM

Title: How heavy are solar panels?
Post by: Zarostulus on December 03, 2015, 03:50:13 PM
And is it something that's improving at all? For example, putting solar panels on a variety of moving objects seems like a good idea at first, but would the weight of them almost make it a moot point, as the added weight means more energy is required to move the vehicle and a secondary engine such as a combustion engine then has to work overtime anyway?

As an example, how much can I expect a small solar panel, say 30cm by 30cm to weigh?
Title: Re: How heavy are solar panels?
Post by: Jemappelle on December 03, 2015, 03:54:27 PM
At a stab in the dark I'd say 250-500g. They are suprisingly light, and won't cave your roof in as some people seem to fear.
Title: Re: How heavy are solar panels?
Post by: CuriousGeorge on December 03, 2015, 04:01:37 PM
Solar roofing is 2-4 lbs per square foot or 10-20 kg per square meter, but that's including all the mounting equipment as well. Solar panels must be efficient for transport, as there is a solar powered aircraft that's flown around the world!

(http://cdni.wired.co.uk/1240x826/a_c/colar-impulse-2.jpg)
Title: Re: How heavy are solar panels?
Post by: JamesH on December 03, 2015, 04:30:27 PM
Solar roofing is 2-4 lbs per square foot or 10-20 kg per square meter, but that's including all the mounting equipment as well.

Indeed, integrated panels in car, laptops etc wouldn't weigh as much, because they don't have all the mounting. The panels themselves are pretty lightweight.
Title: Re: How heavy are solar panels?
Post by: LucidEnergy on December 04, 2015, 01:37:30 AM
The silicon wafers are extremely light, so potentially very light, it's the plastic and other stuff that normally adds weights, but when built into a laptop it weighs almost nothing, and sometimes may even make an item weigh less.
Title: Re: How heavy are solar panels?
Post by: allegrif on December 04, 2015, 03:24:47 PM
The silicon wafers are extremely light, so potentially very light, it's the plastic and other stuff that normally adds weights, but when built into a laptop it weighs almost nothing, and sometimes may even make an item weigh less.
How would it make it weigh less? If it's simply less dense, then wouldn't that mean we're making the laptop more fragile?
Title: Re: How heavy are solar panels?
Post by: BootBoyer on April 01, 2016, 04:40:37 PM
As per my knowledge Solar roofing is 2-4 lbs per square foot or 10-20 kg per square meter, but that's including all the mounting equipment as well. Solar panels must be efficient for transport, as there is a solar powered aircraft that's flown around the world.