The Yacyretá Binational Entity, which operates the hydroelectric power station in the Corrientes city of Ituzaingó, estimated as “very likely” that the Paraná River will deepen in the coming weeks due to the lack of rainfall in the basins that provide water to that flow.
“The Binational Entity informs that based on the persistence of the current prevailing climatic condition in the contribution basin, and the results of the scenarios proposed by the reference climatic centers, it views the deepening of the Paraná river downspout as a very probable situation. ”Said the Argentine Paraguayan state company this Monday.
August 2021 was the one with the lowest inflow in 50 years to that region of Paraná, and forecasts from meteorological centers in Argentina, Paraguay and Brazil indicated that water stress will deepen due to rainfall below the averages for this stage. of the year.
“The month of August ended with an average flow of 6,600 cubic meters per second, a value that had not occurred for 50 years. It represented 20% more than the minimum registered in August 1970 (5,500 cubic meters per second) ”, indicated EBY.
The downward trend in flows will continue, he added, associated with the “persistent scarcity of rainfall in the Paraná river basin that contributes to Yacyretá (of the order of a million square kilometers), where negative anomalies were observed.”
A fact: since the beginning of 2021, there have been between 200 and 400 millimeters of rain less than usual. The worst, according to estimates, is that there will be no recovery, quite the opposite, because with respect to the climate scenario for the quarter, “a greater probability of occurrence of precipitation below normal is expected for the portion” of Argentina, Paraguay and Brazil of the Paraná basin that contributes to Yacyretá.
Less flow is less energy and more public contribution
Sources from the energy sector admitted that the Paraná downspout seriously affects the operation of the Yacyretá and Salto Grande hydroelectric plants, and the horizon is not encouraging according to climate projections.
The Yacyretá plant is operating with 12 of its 20 turbines, which translates into a reduction in power generation close to 50%, below 1,100 megawatts, or what is the same, a third of its technical capacity installed of 3,200 megawatts.
“The generation of hydroelectric energy is not constant because it is precisely subject to flow, in this case from Paraná. The problem is associated with the fact that in the face of a drop in this type of production, thermoelectric plants must compensate for it and for this they need gas, which today shows a decreasing supply. Here a greater import comes into play, which also means greater disbursements from the Treasury via subsidies to contain the tariffs in the internal market that are frozen. So it is that only in subsidies, until June about 5,200 million dollars were already disbursed and the year would close around 9,000 million or more ”, evaluated Jorge Lapeña, president of the General Mosconi Energy Institute.