Hi Tek, in order to use econometrics you should have access to quantitative data concerning, as an example, the number of production plants, the total production and some information on private and corporate consumption. Then you should be able to try some preliminary regressions using an OLS and so on so forth :-)
These reports on Nepal here: http://www.evidenceondemand.info/nepal-case-study-harnessing-hydropower and Himachal Pradesh in India see http://www.evidenceondemand.info/himachal-pradesh-india-case-study-harnessing-hydropower may be of help.
This presentation is interesting: http://www.saarcenergy.org/wp-content/uploads/2016/06/Study-Report1_-Shyam.pdf