According to this study: http://www.networkworld.com/article/2229029/data-center/computer-factories-eat-way-more-energy-than-running-the-devices-they-build.htm

According to this study: http://www.networkworld.com/article/2229029/data-center/computer-factories-eat-way-more-energy-than-running-the-devices-they-build.html http://www.networkworld.com/article/2229029/data-center/comp... Which states that of all the energy used by a laptop (both during use and manufacture) manufacturing represents 70% of the energy usage. So it seems to make sense to extend the life of laptops as much as possible.