NOVELTY - An engineered microbial host cell comprising engineered nucleic acids, and where the engineered host cell is capable of using a minimum amount of light energy to synthesize a carbon-based product of interest directly from carbon dioxide and water, is new.    USE - The engineered microbial host cell is useful for producing carbon-based product of interest or its intermediate; and monetizing carbon-based product of interest production and CO2 (all claimed).    DETAILED DESCRIPTION - An engineered microbial host cell comprising engineered nucleic acids, and where the engineered host cell is capable of using a minimum amount of light energy to synthesize a carbon-based product of interest directly from carbon dioxide and water, and where the carbon-based product of interest is ethyl ester, methyl ester, sucrose, alcohol, ethanol, propanol, isopropanol, butanol, fatty alcohols, fatty acid ester, wax ester, hydrocarbons, n-alkanes, propane, octane, diesel, JP8, polymers, terephthalate, polyol, 1,3-propanediol, 1,4-butanediol, polyhydroxyalkanoates (PHA), polyhydroxybutyrates (PHB), acrylate, adipic acid, epsilon -caprolactone, isoprene, caprolactam, rubber, lactate, DHA, 3-hydroxypropionate, gamma -valerolactone, lysine, serine, aspartate, aspartic acid, sorbitol, ascorbate, ascorbic acid, isopentenol, lanosterol, omega-3 decosahexanoic acid (DHA), lycopene, itaconate, 1,3-butadiene, ethylene, propylene, succinate, citrate, citric acid, glutamate, malate, 3-hydroxypropionic acid (HPA), lactic acid, tetrahydrofuran (THF), gamma butyrolactone, pyrrolidones, hydroxybutyrate, glutamic acid, levulinic acid, acrylic acid, malonic acid, carotenoid, isoprenoid, itaconic acid, limonene, pharmaceutical or pharmaceutical intermediates, erythromycin 7-ADCA/cephalosporin, polyketides, statin, paclitaxel, docetaxel, terpene, peptide, steroid, and an omega fatty acid, is new. INDEPENDENT CLAIMS are:    (1) a method for producing carbon-based product of interest or its intermediate comprising: introducing engineered nucleic acids into a carbon fixing organism, where the engineered host cell is capable of using a minimum amount of light energy to synthesize a carbon-based product of interest directly from carbon dioxide and water, culturing the engineered host cell, then isolating a carbon-based product of interest from the engineered cell or culture medium;    (2) a carbon-based product of interest characterized as having - delta p(%o) of 63.5-66 and -D(%o) of 37.5-40; and    (3) a method for monetizing carbon-based product of interest production and carbon dioxide (CO2) taken up in association with the production of a carbon-based product of interest by an engineered photoautotrophic organism comprising: quantifying an amount of the product produced by the engineered photoautotrophic organism; quantifying an amount of CO2 taken up in association with the amount of the product produced; valuing the amount of the product according to a market value; valuing the amount of CO2 taken up in association with the amount of product produced; and monetizing the amounts of the product produced and CO2 taken up in association with the amount of the product produced by selling the amount of the product and selling a CO2 credit into a carbon market.