Electro-fermentation (EF) and microbial CO2 electrosynthesis (MES) are emerging interdisciplinary technologies that can produce renewable carboxylic acids.A newly discovered photo-decarboxylase offers an innovative route for bio-alkane production from acids.The cascading photo/bio/electrochemical system advanced bio-alkanes (CnH2n+2, n = 2 to 5) biomass CO2.Systems will require optimisation red...