Today because there is less energy coming from the sun through reduced incident solar energy and increased albedo from greater cloud formation the Earth is cooling and the OLR will change accordingly. (judithcurry.com)
Chloroplasts alone absorb light only from the visible portion of the solar spectrum, allowing access to only about 50 % of the incident solar energy radiation, and less than 10 % of full sunlight saturates the capacity of the photosynthetic apparatus. (sciencedaily.com)
Bao suggested a more feasible efficiency rate would be about 10 percent, meaning that 10 percent of the incident solar energy will be converted to hydrogen chemical energy by the process. (sciencedaily.com)