Development work took off in mid-May 1997. The guiding idea throughout has been that any designs for Jatropha jikos and lamps should, to simplify the exercise, at least start from existing standard designs for spent engine oil and kerosene.
A functioning prototype jiko and two functioning prototype lamps have been developed. The work has not been as easy as was originally anticipated. The lamps can be sent to the field for testing, but some development work in connection with wicks and air supply still needs to be conducted in the case of the jiko.
Unfortunately Jatropha oil has not been as available for development activities as would have been hoped. All that was available, were four litres of Jatropha oil and most trials were done with substitutes that perform similarly.