Giving new meaning to the idea of a “scientific calculator,” IDC has a fantastic life cycle analysis tool that calculates the embodied energy and carbon footprint in any product. You just enter some basic data about a product’s composition and manufacture, and it works out the energy used in the product’s extraction, manufacture, transport, use, and disposal.
One of our architects recently gave the calculator a whirl by estimating the carbon footprint of
Amazon’s new Kindle Wireless Reading Device. He answered a few questions and found that the Kindle has the same footprint as 30 paperbacks ordered from Amazon’s store. So if you’re going to read more than 30 books on your Kindle, it’s greener to purchase the digital reader than the paper copies.
The tool helps reveal the large role that delivery plays in the total lifecycle cost for many products, especially if the product is picked up personally. The embodied energy in a book, for example, doubles if you drive to a bookstore versus getting it delivered in the mail. With prefab homes, factory construction reduces the amount of total transportation since workers are local (some site-built contractors will work 100+ miles from their home), and equipment and basic supplies can be ordered in bulk and stockpiled for use on multiple projects.
