A method of extracting products from biomass comprises: destructively distilling the biomass, using solar power as an energy source; and collecting the resulting products. The biomass may preferably be sisal, but could also be other forms of biomass. The products extracted may be methane, methanol, acetone, tars, creosotes, pyroligneous acid, carbon or other products. The solar power may include a solar concentrator having parabolic mirrors controlled by electric motors. The biomass may be mixed with a working fluid (e.g. water) before the destructive distillation takes place.