A DC stove for use in houses/huts in developing countries. Solar powered

I am working with MFIs in SE Asia. I have a source for clean water (micro-pore), but need to extend it to include lighting and a cook stove. All to run off a solar panel. At the moment they use open wood fires in their huts which is not healthy. I want to have a unit that produces drinking water (done) and a DC stove. The system should also provide lighting to the house - but that is straight forward with a suitable battery with the solar panel.