The PLD index - used to determine short-term market prices - could reach 324 reais/MWh (US$98) in August, according to São Paulo-based electricity trading company Comerc Energia.
While water consumption increased, so did the use of recirculated water, which has helped reduce the water footprint of Chile's copper industry.
Estimated investment for the natural gas transport infrastructure is US$160mn.
Experts have warned that Bolivia must ramp up investment in exploration in order to avoid curtailing gas exports to Brazil and Argentina.
Developers will pour the funds into projects secured at auctions in the past year, according to the mining and energy ministry.
The renewable energy developer says it is analyzing a non-binding proposal from Brookfield for a 16% stake in the firm held by Rio de Janeiro utility Light.