5 ms·
IMHO we should also look at EROI (energy return on investment), which Wikipedia cites [0] to be around ~20, that is a wind turbine will produce 20 times what it
by Faaak 3y ago
IMHO we should also look at EROI (energy return on investment), which Wikipedia cites [0] to be around ~20, that is a wind turbine will produce 20 times what it cost to make it.
[0]: https://en.wikipedia.org/wiki/Energy_return_on_investment#Wind_turbines https://en.wikipedia.org/wiki/Energy_return_on_investment#Wi...
- jauntywundrkind 3y agoThe point here that the wooden wind turbine is carbon negative is also a good one (where-as steel and concrete are a big carbon positive) is also worth tracking. I do wish I had a little better idea what the costs of wood were. There have to be nutrients and other resources consumed, that wood takes to produce. I'd love to better appreciate the material flow of wood.
- Brybry 3y agoAlso since it's laminated veneer lumber (LVL) and glued laminated timber (GLT) [1] it's going to have resins/adhesives involved that have an impact as well. Probably still better than the cement in concrete but I don't have a source for that. [1] https://www.windpowermonthly.com/article/1660496/windtech-why-wood-works-modular-low-carbon-towers#:~:text=Erik%20D%C3%B6lerud https://www.windpowermonthly.com/article/1660496/windtech-wh...
- sandworm101 3y agoBy weight, much of that wood is actually glue. The structure is wood fiber held together by chemcial glues. It isnt a tree. It isnt a hand-carved covered bridge. It is an engineered structure filled with modern bits and pieces made out of not-wood.