{"id":49664,"date":"2026-11-04T11:00:00","date_gmt":"2026-11-04T14:00:00","guid":{"rendered":"https:\/\/agenciainfra.com\/blog\/?p=49664"},"modified":"2026-11-04T11:05:32","modified_gmt":"2026-11-04T14:05:32","slug":"hidreletricas-operam-cada-vez-mais-sob-pressao-com-expansao-de-renovaveis","status":"publish","type":"post","link":"https:\/\/agenciainfra.com\/blog\/hidreletricas-operam-cada-vez-mais-sob-pressao-com-expansao-de-renovaveis\/","title":{"rendered":"Hidrel\u00e9tricas operam cada vez mais sob press\u00e3o com expans\u00e3o de renov\u00e1veis"},"content":{"rendered":"\n<p class=\"has-text-align-right wp-block-paragraph\"><strong>Marisa Wanzeller, Lais Carregosa e Geraldo Campos Jr., da Ag\u00eancia iNFRA<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/agenciainfra.com\/blog\/assine-nossos-servicos\/\"><img fetchpriority=\"high\" decoding=\"async\" width=\"966\" height=\"117\" src=\"https:\/\/agenciainfra.com\/blog\/wp-content\/uploads\/2026\/01\/selo-assinantes-1.png\" alt=\"\" class=\"wp-image-35239\" style=\"width:400px;height:auto\" srcset=\"https:\/\/agenciainfra.com\/blog\/wp-content\/uploads\/2026\/01\/selo-assinantes-1.png 966w, https:\/\/agenciainfra.com\/blog\/wp-content\/uploads\/2026\/01\/selo-assinantes-1-300x36.png 300w, https:\/\/agenciainfra.com\/blog\/wp-content\/uploads\/2026\/01\/selo-assinantes-1-768x93.png 768w\" sizes=\"(max-width: 966px) 100vw, 966px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A varia\u00e7\u00e3o di\u00e1ria de gera\u00e7\u00e3o de energia de fonte hidrel\u00e9trica aumentou 32% entre outubro de 2025 e de 2026, segundo o ONS (Operador Nacional do Sistema El\u00e9trico). Essas usinas s\u00e3o acionadas para suprir, em um curto intervalo de tempo, o decl\u00ednio da gera\u00e7\u00e3o solar no fim da tarde e o aumento da demanda, o que leva as chamadas \u201crampas de gera\u00e7\u00e3o\u201d a superarem o patamar de 40 GW (gigawatts) em alguns dias.\u00a0<br><br>Esse fen\u00f4meno \u00e9 impulsionado pela expans\u00e3o da MMGD (Micro e Minigera\u00e7\u00e3o Distribu\u00edda) solar, de acordo com o operador. Geralmente, as usinas e\u00f3licas compensam parte da redu\u00e7\u00e3o solar. Mas, em dias sem vento, a press\u00e3o sobre as hidrel\u00e9tricas aumenta, como descreveu uma fonte do setor.<br><br>Os dados mostram que essa alta varia\u00e7\u00e3o de despacho hidrel\u00e9trico j\u00e1 se tornou rotineira. Entre 20 e 28 de outubro de 2025, a rampa di\u00e1ria m\u00e9dia das hidrel\u00e9tricas foi de 29,5 GW. No mesmo per\u00edodo em 2026, alcan\u00e7ou 39,1 GW \u2013 um aumento de 32%. \u201cRampas acima de 40 GW, raras em 2025, passaram a ser frequentes em 2026\u201d, diz o ONS. De acordo com o operador, o pico de gera\u00e7\u00e3o da MMGD subiu de 26 GW para 32,7 GW nesse intervalo.<br><br>Em 26 de outubro, por exemplo, a rampa de gera\u00e7\u00e3o hidr\u00e1ulica alcan\u00e7ou 42,1 GW. Nesse dia, segundo o operador, a gera\u00e7\u00e3o e\u00f3lica encontrava-se da ordem de 5 GW, bem abaixo dos cerca de 15 GW a 20 GW habituais no per\u00edodo. A varia\u00e7\u00e3o da gera\u00e7\u00e3o hidr\u00e1ulica foi ainda maior no dia 18 de outubro, quando chegou a 45,6 GW. Considerando todo o ano de 2026 at\u00e9 o momento, o pico ocorreu em 17 de junho, quando a rampa foi de 48,9 GW. Essas varia\u00e7\u00f5es normalmente ocorrem em um per\u00edodo de cerca de seis horas.<br><br>Durante o dia, a GD solar, que n\u00e3o \u00e9 controlada pelo operador, obriga a redu\u00e7\u00e3o do despacho de fontes centralizadas. Mas, ao anoitecer, as placas solares deixam de injetar energia na rede, o que demanda o acionamento de fontes como hidrel\u00e9tricas e termel\u00e9tricas.\u00a0<br><br>A Abrage (Associa\u00e7\u00e3o Brasileira das Empresas Geradoras de Energia El\u00e9trica), que representa grandes hidrel\u00e9tricas, destaca que essas varia\u00e7\u00f5es evidenciam o \u201ccrescente servi\u00e7o prestado pelas hidrel\u00e9tricas de regularizar o desequil\u00edbrio entre a demanda e a gera\u00e7\u00e3o das demais fontes\u201d, chamado de flexibilidade operativa.\u00a0<br><br>A previs\u00e3o do <a href=\"https:\/\/agenciainfra.com\/blog\/wp-content\/uploads\/2026\/11\/Apresentacao-resultados-PEN-2026-Agentes.pdf\" target=\"_blank\" rel=\"noopener\">PEN (Plano de Opera\u00e7\u00e3o Energ\u00e9tica) 2026-2030<\/a>, elaborado pelo ONS, \u00e9 que a amplitude m\u00e1xima da gera\u00e7\u00e3o hidr\u00e1ulica chegue a 50 GW em 2030. Assim, a tend\u00eancia \u00e9 que a necessidade de flexibilidade operativa cres\u00e7a e que as hidrel\u00e9tricas continuem sendo predominantes no atendimento desse requisito, aponta o operador.\u00a0<br><br><strong>Reconhecimento econ\u00f4mico<\/strong><br>O crescimento da rampa das hidrel\u00e9tricas, no entanto, acaba tendo um custo para as pr\u00f3prias usinas. De acordo com a Abrage, as elevadas amplitudes exigidas na gera\u00e7\u00e3o trazem desafios operacionais, t\u00e9cnicos e econ\u00f4micos. Isso exige, por exemplo, aumento das despesas com manuten\u00e7\u00e3o.<br><br>\u201cDevido ao aumento do n\u00famero de paradas e partidas das unidades geradoras, ocorre maior desgaste dos equipamentos e, portanto, maiores custos operacionais\u201d, disse a entidade. Esse cen\u00e1rio motiva o pleito do segmento para que haja reconhecimento econ\u00f4mico expl\u00edcito pelos servi\u00e7os de flexibilidade prestados pelas hidrel\u00e9tricas.<br><br><strong>Forma\u00e7\u00e3o de pre\u00e7o<\/strong><br>Agentes do segmento apontam que a <a href=\"https:\/\/www.in.gov.br\/web\/dou\/-\/lei-n-15.269-de-24-de-novembro-de-2025-670727120\" target=\"_blank\" rel=\"noopener\">Lei 15.269<\/a>, da Reforma do Setor El\u00e9trico, j\u00e1 trouxe algumas evolu\u00e7\u00f5es com aprimoramentos para a correta remunera\u00e7\u00e3o dos servi\u00e7os de flexibilidade. O tema, no entanto, ainda deve ser regulamentado, explicou uma fonte.\u00a0<br><br>A legisla\u00e7\u00e3o incluiu nas diretrizes a serem observadas na opera\u00e7\u00e3o do sistema e na comercializa\u00e7\u00e3o de energia el\u00e9trica aspectos como: restri\u00e7\u00f5es de deflu\u00eancia e armazenamento dos reservat\u00f3rios; restri\u00e7\u00f5es de rampas de subida e descida das usinas hidrel\u00e9tricas e termel\u00e9tricas; e reserva de pot\u00eancia.\u00a0<br><br>Al\u00e9m disso, a <a href=\"https:\/\/www.in.gov.br\/web\/dou\/-\/lei-n-15.269-de-24-de-novembro-de-2025-670727120\" target=\"_blank\" rel=\"noopener\">Lei 15.269<\/a> diz que as opera\u00e7\u00f5es no mercado de curto prazo devem considerar o MRE (Mecanismo de Realoca\u00e7\u00e3o de Energia) para mitiga\u00e7\u00e3o do risco hidrol\u00f3gico; e o tratamento para os servi\u00e7os ancilares de energia el\u00e9trica.<br><br>Para um especialista, o aprimoramento da forma\u00e7\u00e3o dos pre\u00e7os de energia j\u00e1 cobriria, em parte, os custos extras das usinas para o atendimento de flexibilidade. A institui\u00e7\u00e3o do PLD Hor\u00e1rio (Pre\u00e7o de Liquida\u00e7\u00e3o das Diferen\u00e7as em base hor\u00e1ria) \u2013 refer\u00eancia nas opera\u00e7\u00f5es no mercado livre \u2013, em 2021, foi um avan\u00e7o nesse sentido, explica a fonte.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Marisa Wanzeller, Lais Carregosa e Geraldo Campos Jr., da Ag\u00eancia iNFRA A varia\u00e7\u00e3o di\u00e1ria de gera\u00e7\u00e3o de energia de fonte hidrel\u00e9trica aumentou 32% entre outubro de 2025 e de 2026, segundo o ONS (Operador Nacional do Sistema El\u00e9trico). Essas usinas s\u00e3o acionadas para suprir, em um curto intervalo de tempo, o decl\u00ednio da gera\u00e7\u00e3o solar [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8364,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[7249],"tags":[1335,1093,22548,22547,2803,11594,635,13132,7366,8724,216,3285,22546,10710],"class_list":["post-49664","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-destaque","tag-abrage","tag-energia-solar","tag-expansao-das-renovaveis","tag-flexibilidade-operativa","tag-geracao-de-energia","tag-geraldo-campos-jr","tag-hidreletricas","tag-lais-carregosa","tag-marisa-wanzeller","tag-mmgd","tag-ons","tag-pld-horario","tag-rampa-de-geracao","tag-reforma-do-setor-eletrico"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v28.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Hidrel\u00e9tricas operam cada vez mais sob press\u00e3o com expans\u00e3o de renov\u00e1veis - Ag\u00eancia iNFRA<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/agenciainfra.com\/blog\/hidreletricas-operam-cada-vez-mais-sob-pressao-com-expansao-de-renovaveis\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hidrel\u00e9tricas operam cada vez mais sob press\u00e3o com expans\u00e3o de renov\u00e1veis\" \/>\n<meta property=\"og:description\" content=\"Marisa Wanzeller, Lais Carregosa e Geraldo Campos Jr., da Ag\u00eancia iNFRA A varia\u00e7\u00e3o di\u00e1ria de gera\u00e7\u00e3o de energia de fonte hidrel\u00e9trica aumentou 32% entre outubro de 2025 e de 2026, segundo o ONS (Operador Nacional do Sistema El\u00e9trico). 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