Decreto Legislativo No. 843 - Ley General de Electricidad;
This Law regulates the generation, transmission, distribution and marketing of electricity. Articles 5, 13 and 24 state that any project involving the generation of energy with hydroelectric or geothermal means must have written consent from the General Superintendence of Electricity and Telecommunications.
Public domain government legislation re-posted as a PDF document as part of an Institutional Repository collection to aggregate energy policy.
Asamblea Nacional Legislativa de El Salvador. "Legislative Decree No. 843 - General Electricity Law." (1996). https://digitalrepository.unm.edu/la_energy_policies/110