Diamante Hydro Power Plant (‘HIDISA’)

In October 1994, HIDISA was granted a 30-year concession for the generation, sale and marketing of electricity from the Diamante hydroelectric system. Located on the Diamante river, in the Province of Mendoza, HIDISA has an installed capacity of 388 MW, which represents 1% of Argentina’s installed capacity, and consists of three dams and three hydroelectric power generation plants (Agua del Toro, Los Reyunos, and El Tigre). The Diamante System extends for a total distance of approximately 55 km, with a height differential between 873 m and 1,338 m. From 1990 to 2019, its annual average generation was 553 GWh, with a generation record high of 943 GWh in 2006 and a record low of 322 GWh in 2014. Pampa holds a 61% direct and indirect stake on HIDISA’s capital stock.



The following chart shows certain relevant statistical data on HIDISA:

2018 2019
Net Generation (GWh) 393 334
Purchases of Energy (GWh)
Total Energy Sales (GWh) 393 334
Average Price (US$/MWh) 46 58
Average Gross Profit (US$/MWh) 32 42

Note: Gross Margin before depreciation and amortization, values expressed in nominal terms. AR$/US$ exchange rate: 2018 – 28.13; 2019 – 48.23.


Technical Data

Plant Unit Installed Capacity (MW) Start-Up Type of Unit
HIDISA ADTOHI 150 388 1994 Hydroelectric