It seems that they operate out of Belgium, and they are reporting some excellent results. It really does seem that the win/win/win cycle is very feasible - efficient stoves for cooking which also produce char which is used as a valuable agricultural input.
One piece of research that was linked from the Fund website is this trial here in Australia:
We actually harvested that plot this week and we've seen some amazing differences. Its a bit early to give you the exact data at this point in time, but we've seen probably double the biomass production and double the sweet corn yield where we've had high rates of biochar application in the soil. That's somewhere between 10 and 20 tonnes per hectare of biochar. And, yeah, we've had some very, very significant differences in corn production there.That's really amazing - doubling the corn yield through the application of biochar!