Numerous oil and gas exploration sites practice flaring for safety and disposal of unwanted low calorific gases. However, instead of just standalone burning the gas, why can't a gas turbine or internal combustion engine be attached so that the process also generates electricity. A lot of heat is being wasted. Why not convert to power?
I'm guessing there are some technical or economic problems to this. Otherwise, it would have been long implemented. What are the specific issues?