How big is a ton of carbon dioxide (CO2) / visualizing a ton of CO2

A ton of CO2 gas is huge. It would fill a cube about 27′ (9 meters) on a side. That cube would be as tall as a telephone pole. One ton is the weight of about half a car. In other words, a car weighs about 2 tons.

The carbon footprint of each house in the US varies considerably depending on the location of the house and its size. The following charts show some of this variation. They are taken from, “Goldstein B, Gounaridis D, Newell JP. The carbon footprint of household energy use in the United States. Proc Natl Acad Sci U S A. 2020 Aug 11;117(32):19122-19130. doi: 10.1073/pnas.1922205117. Epub 2020 Jul 20. PMID: 32690718; PMCID: PMC7431053. Which is available here:

Useful links:

The Easiest Way to Calculate Your Home’s Carbon Footprint:

Written Answers to over 300 Questions about Zero Carbon Homes:

Finance and Net Zero Energy Terms explained:

Zero Carbon Home Website Home Page:      

Database of State Incentive for Renewable Energy (DSIRE)

Published articles on Zero Carbon and Net Zero Energy:

Department of Energy, EnergySage, “Zero Carbon Home”

Zero Energy Project, “My Zero Energy Retrofit beats my 401k”

Cool Effect, “Mr. Green’s Zero Carbon Home”

Green Energy Times, “My Zero Energy Pool is a Great Investment!”

Published Presentations on Zero Carbon Zero Bills:

To see a 3-minute interview of David Green by NBC Boston anchor Joy Lim Nakrin, please click here:TV interview

To see a 20-minute TED talk at Harvard Business School, please click here: TED Talk

You can watch a recorded version of my Zero Carbon, Zero Bills webinar here: Zero Carbon, Zero Bills Webinar

Reviews of my “Zero Carbon, Zero Bills” webinar included, “Minute-for-minute, point-for-point, one of the best webinars I have ever attended. Thank you!”, “David is a true inspiration and asset to our community. He inspired us to get solar panels and a new front door”, “This is like a masterclass in ZeroCarbon”, “Thank you soooo much for the sensible advice and your fabulous resources!!” and, although this next comment is a little flowery, it does express the sentiment of many other comments, “Your contribution to Greening America is great and will probably help our survival as a species a bit longer than expected”.