Hi Mark another thought that might make its way into the building code initiatives:
This is in response to an email about Mitsubishi’s new modular carbon capture technology.
Hi Jan, I am skeptical. Not because of the chemistry – there are dozens of chemistries for sequestering CO2, for instance NASA used lithium hydroxide on the Apollo moon rockets – but because of the cost. Current estimates are about $100-$200 per ton captured. You can buy a carbon offset in the regulated market for about $50 a ton and about $15 a ton in the unregulated markets. They have the same effect.
Unlike solar panels and wind farms where there is no consumable cost, all these carbon capture technologies use a consumable (Lithium hydroxide in NASA’s case, some source of amines in this Mitsubishi example) which means there is a cost you cannot get below for chemical-based carbon capture. Hence economies of scale, that have been so successful in solar and wind, cannot reduce the marginal cost to zero. The cost of the consumable chemicals sets a floor on the cost per ton of the carbon capture.
The cheapest way to sequester carbon is to cut down a mature tree, plant a new one to replace it, saw the tree into planks and use them to build a house. This sequesters the carbon for about 100 years. There is no incremental cost as we do this already and people are perfectly happy paying $4 for a 2×4. What it needs is a building mandate to use wood rather than steel and concrete. Wood can be made into glued/laminated beams that can build up to 4 stories high.
The highly-acclaimed book “Zero Carbon Home” by “Green Guru” David Green.
How we cut our home’s carbon emissions to zero.
How we cut our home’s utility bills to zero.
Solar panels on the roof of our house.
Our heat pumps.
Fiberglass and ISO board insulation on the roof of our house.
Triple-pane windows in our living room.
The Easiest Way to Calculate Your Home’s Carbon Footprint:https://greenzerocarbonhome.com/2018/07/what-is-the-carbon-footprint-of-natural-gas-heating-oil-propane-and-coal/
Written Answers to over 300 Questions about Zero Carbon Homes:https://greenzerocarbonhome.com/webinar-questions-and-answers/
Finance and Net Zero Energy Terms explained: https://greenzerocarbonhome.com/energy-and-finance-terms-explained/
Zero Carbon Home Website Home Page: https://greenzerocarbonhome.com
Database of State Incentive for Renewable Energy (DSIRE) https://www.dsireusa.org
Published articles on Zero Carbon and Net Zero Energy:
Department of Energy, EnergySage, “Zero Carbon Home”https://www.energysage.com/project/7230/zero-carbon-home/
Zero Energy Project, “My Zero Energy Retrofit beats my 401k”https://zeroenergyproject.org/2018/09/23/my-zero-energy-retrofit-beats-my-401k/
Cool Effect, “Mr. Green’s Zero Carbon Home” https://www.cooleffect.org/content/news/green-testimonial?utm_source=Cool_Effect_CRM&utm_medium=EMAIL&utm_campaign=20180814Engage_Testimonial&utm_content=green_CTA
Green Energy Times, “My Zero Energy Pool is a Great Investment!” http://www.greenenergytimes.org/wp-content/uploads/2019/05/GET_May-2019.pdf
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