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writing:winter_greenhouses [2025/12/04 02:34] – JacobCoffinWriteswriting:winter_greenhouses [2026/01/02 15:34] (current) – JacobCoffinWrites
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       * Downsides: additional work with caring for animals. Possibly more complex structures - as far as I can tell the animals might not be in a pen in the greenhouse but in an adjacent room with cross ventilation.       * Downsides: additional work with caring for animals. Possibly more complex structures - as far as I can tell the animals might not be in a pen in the greenhouse but in an adjacent room with cross ventilation.
   * And absolute worst case, there are [[https://solar.lowtechmagazine.com/2020/09/how-to-make-biomass-energy-sustainable-again/|ways to make wood heat sustainable]] (and to produce biochar using [[https://permacultureprinciples.com/post/rocket-stoves/|rocket stoves]] or [[https://en.wikipedia.org/wiki/Rocket_mass_heater|rocket]] [[https://insteading.com/blog/rocket-mass-heaters/|mass]] [[https://permies.com/w/rmh-builders-guide|heaters]] as a byproduct. This stuff can be tremendously useful in compost, and holds carbon for a comparatively long time.   * And absolute worst case, there are [[https://solar.lowtechmagazine.com/2020/09/how-to-make-biomass-energy-sustainable-again/|ways to make wood heat sustainable]] (and to produce biochar using [[https://permacultureprinciples.com/post/rocket-stoves/|rocket stoves]] or [[https://en.wikipedia.org/wiki/Rocket_mass_heater|rocket]] [[https://insteading.com/blog/rocket-mass-heaters/|mass]] [[https://permies.com/w/rmh-builders-guide|heaters]] as a byproduct. This stuff can be tremendously useful in compost, and holds carbon for a comparatively long time.
-  * For additional light, electric lamps (perhaps using salvaged headlights) are one option but there are also some interesting ways to capture and redirect sunlight at the end of the [[solar_concentrators|solar concentrators]] page. Light tubes and Fiberoptic Daylighting systems both have potential here, depending on your specific use case  +  * For additional light, low voltage electric lamps (perhaps using salvaged headlights) could do a lot to extend the short daylight hours. Alternatively, [[solar_concentrators|Solar Tubes and Fiberoptic Daylighting Systems]] won't extend the length of the day, but they will capture additional sunlight and redirect it into the greenhouse. Solar tubes are simpler to set up and maintain but don't reach as far, Fiberoptic Daylighting Systems are more mechanically complex but can reach further and capture more light. Either may be useful if the greenhouse isn't sited as optimally as it could be or just needs more light.  
 +    * Some of these systems have been tested for indoor farming - could the basic concept of sheltering the growing space into the earth be taken even further and end with a greenhouse entirely underground, with just ventilation and light capture systems on the surface? 
 +  * There are [[https://smallfarms.cornell.edu/2011/10/soap-bubbles-to-insulate-greenhouses-a-new-approach-to-energy-conservation/|systems for adding temporary insulation between layers of greenhouse plastic by forcing in soap bubbles]], it might be a bit too high-tech and fiddly for some settings but it might be a great fit for others.