I guess what I’m asking is does this process even create much? Plants just lay roots and stare at the sun; if they had a means to get up and move – how far could they get?
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In general, photosynthesis converts about 3-6% of the light energy that reaches a plant into chemical energy. This means that for every 100 units of light energy that a plant absorbs, 3-6 units are converted into chemical energy in the form of glucose and oxygen.
However, some species of plants, such as certain types of algae and C4 plants, are more efficient at converting light energy into chemical energy. These plants can convert up to 20% of the light energy they receive into chemical energy.
The amount of energy produced by photosynthesis in the form of chemical energy (glucose) can be measured in kilocalories (kcal). One kilocalorie is the amount of energy required to raise the temperature of one liter of water by one degree Celsius.
A rough estimate of the energy consumption of a 2 feet tall cannabis plant during its growth phase can be calculated by considering that a mature cannabis plant can consume about 150 watts per square meter of foliage (around the same as the energy consumption of a lightbulb) and assuming an average foliage area of about 1 square meter. This would give an estimated energy consumption of 150 watts x 1 square meter = 150 watts per plant.
When it comes to converting the energy consumption to kcal, 1 watt is equivalent to 1 joule per second, and 1 kcal is equivalent to 4184 joules. So, 150 watts is equivalent to 150 x 4184 = 632600 joules, or 632.6 kcal.
as a rough estimate, here are some examples of how much exercise it might take for a healthy person to burn 632.6 kcal:
Walking at a moderate pace for about 4.5 hours
Running at a moderate pace for about 1 hour and 45 minutes
Cycling at a moderate pace for about 2 hours and 30 minutes
Swimming for about 1 hour and 45 minutes
Dancing for about 3 hours
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