The energy for daily use, cooking, come almost exclusively from wood. They use wood from previously constructed building or construction retirements, or fallen logs and branches from the forest.
The energy for larger projects (running the generator to pump water, supply electricity for the school and night events, and run power tools used to cut and mill wood) comes exclusively from fossil fuels. There are some problems with this:
Difficult to read and do other activities at night when the generator is not running.
Not possible to power the pump (which supplies the water to the filter for drinking water) when the village generator is not running or broken.
The village generator produces noise, air, and ground water pollution.
Cell phones or batteries cannot be charged when the generator is not running.
No or very limited power for the school computers and Internet access.
Solution: Energy Sustainability
One thing there is a lot of is sun. Even during the rainy season there is enough light energy to charge a battery and provide a modest amount of power.
An 68 watt solar panel, together with a voltage regulator, power inverter, and a deep cycle battery, can supply the power needs of a family of 10 indefinitely (over the typical 20 year life of the panels and maintenance of battery and accessories). Please see this site for more information about solar power: http://www.affordable-solar.com/uni.solar.laminate.pvl.series.68.watt.htm
Other possibilities involve using the waste from the village to produce bio-gas, but at this time would be much more expensive.