Do solar panels require more energy during manufacturing than they produce over their lifetime?
Originally Posted by Therapy
I have read more than once that the energy used to make a solar
panel is more than it will ever produce, meaning a net loss. But that is how our bodies (and our onboard charging
systems) work also. So what the hay!
A friend told me that the energy required to manufacture a solar
panel is greater than what the panel is expected to produce during its lifetime, thus making them inefficient and unsustainable, and I have not been able to find any literature which agrees. Can anyone point me in an academic non biased direction? I remain skeptical.
by Eco_Dave... Member
since:June 12, 2008Total points:611 (Level 2)
Best Answer - Chosen by Asker
There is a study conducted by Giacomo Bizzarri of the University of Ferrara and Gianluca Morini of the University of Bologna found that the COST of installing solar panels
over their lifespan is 2.5 time MORE than the cost of purchasing
the power they produce.
They more importantly stated that they "...found that the total energy produced over a two-year period outweighs the energy used in manufacture, installation
, and maintenance
. Their analysis also shows that the manufacture and use of PV panels
produces less pollution than fossil fuel
based electricity generation."
So there is your answer, they are only more expensive and only now. A few years back gas was only $1.50/gallons here in the USA. Things change quickly. If electricity costs increase by 300% over the next 20-25 years, this study may need to be revised!
ROI of Photovoltaic Solar Panels
Sorry for the big type. It goes on with lots of other testimonies of cost savings. I for one, agree. We saved a lot of heat, noise
, vibration, oil
costs, and aggravation when our VERY well equipped cruising boat ran exclusively on solar for several years while we were in Mexico
As for earth hour, my lights are ON.