A warmth wave drove Brazil’s energy demand as much as a report excessive of 102 GW final week. Nonetheless, it additionally affected solar energy era and pushed PV module working temperatures to as much as 60 C.
From pv journal Brazil
A warmth wave that handed via Brazil earlier this month pushed vitality consumption within the nation to report ranges. It additionally raised questions concerning the impacts of excessive temperatures on a system with a rising share of photo voltaic vitality.
At some factors, contemplating the heating impact of photovoltaic methods, the lack of effectivity might have reached 15% on this final warmth wave, estimates the strategic chief of selling and communication options at Brazilian meteo knowledge supplier Tempo OK, Caetano Mancini.
“The best temperature on photo voltaic panels is round 25 C,” Mancini informed pv journal. “At the very least, that is the trade customary for testing and analysis. On common, PV methods undergo a discount in effectivity of the order of 0.4% for every [degree Celsius] when the panel temperature exceeds 25 C.”
Mancini stated that within the areas of São Paulo and Minas Gerais, air temperatures may finally improve by 5 C above the common, which might be between 35 C and 40 C. This implies panel temperature can attain as much as 60 C.
“This is able to give a drop in effectivity of round 10%, 15%, roughly,” he defined.
Regardless of the lack of effectivity attributable to excessive temperatures, the participation of photo voltaic era in assembly load demand continues to develop, as PV era coincides with peak demand occasions related to excessive warmth.
“The photovoltaic photo voltaic supply has been more and more basic in supporting the Nationwide Interconnected System (SIN) in occasions of rising temperatures, a problem that might turn out to be much more frequent with ongoing international warming,” stated Rodrigo Sauaia, the president of ABSOLAR, the Brazilian Photo voltaic Photovoltaic Vitality Affiliation. “Along with defending the patron’s funds, photo voltaic vitality avoids greenhouse fuel emissions within the nation’s electrical energy era, as it’s a supply that doesn’t emit any fuel, liquid or strong, throughout its operation.”
In November 2023, photo voltaic lined 10% of Brazil’s common month-to-month demand, in line with the community operator. Within the northeast, participation in assembly the month-to-month load reached 19.4% in January 2024.
On the identical time, the rising participation of PV within the vitality combine requires extra vitality storage capability and shortly deployable belongings to satisfy the demand that was met by the photo voltaic supply throughout the day. This 12 months, the load ramp may fluctuate between 25 GW and 30 GW.
“We had an El Niño with some temperature data, in September, November, and January, with a big impact. This contributed to us having some temperature data in a big half right here within the southeast of Brazil, with some persistent warmth wave occasions and in November we had episodes with 10 Cabove common,” stated Mancini. “What occurs, in a really sensible approach, is the rise in evaporation within the largest area of the globe, which begins to have an effect on the way in which winds transfer throughout the complete planet. This generates a pure affect on what we name the final circulation of the ambiance and on rainfall patterns.”
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