In the province of Mendoza, on the Diamante River, HIDISA operates the Diamante System, which consists of three dams and hydropower plants (Agua del Toro, Los Reyunos and El Tigre). With a 388 MW gross capacity, which represents 0.9% of Argentina’s total capacity, HIDISA extends over around 55 km, and its height ranges between 873 m and 1,338 m above sea level. The average annual generation between 1990 and 2024 was 529 GWh, with a record high of 943 GWh in 2006 and a record low of 303 GWh in 2022.
HIDISA began its 30-year concession for the generation, sale and commercialization of electricity from the Diamante hydroelectric system in October 1994, extended until June 1, 2025. Pampa has a 61% direct stake in HIDISA’s capital stock.
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The following chart shows certain relevant statistical data on HIDISA:
| 2023 | 2024 | |
|---|---|---|
| Net Generation (GWh) | 361 | 616 |
| Purchases of Energy (GWh) | – | – |
| Total Energy Sales (GWh) | 361 | 616 |
| Average Price (US$/MWh) | 31 | 21 |
| Average Gross Profit (US$/MWh) | 8 | 10 |
Note: Average Gross Profit (US$/MWh)
Technical Data
| Unit | Installed Capacity (MW) | Start-Up | Type of Unit | Remuneration | |
|---|---|---|---|---|---|
| ADTOHI | 150 | 388 | 1994 | Hydroelectric | Spot |
| LREYHB | 224 | ||||
| ETIGHI | 14 | ||||
| Total | 388 | ||||
