Hello everyone, For villages in Africa and Asia that still use wood, dung or other biomass in simple stoves which option do you think will be better? Concentrate solar energy into an insulated unit with a molten salt which can then be used at any time or build a simple biogas generator (large scale or maybe even household) using rubbish, biomass, dung and maybe even human waste. With the second option you could also maybe help with the sanitation problem. There is also a third option of using much more efficient stoves so the current fuel they use will last longer and produce less smoke and particulates. Are there any other alternatives or ideas? Been thinking about this over the last few days and wanted some expert opinions. What would you do? Thanks for reading.