{"article":{"annotation":{"article_id":"epe-ons-update-battery-storage-grid-connection-requirements","available_at":"2026-10-25T17:24:26.703729Z","geography_revision":"ef6ee0010dda5fe7b240fd514749b43e214c57da73222d2e40ec83b276dd0977","id":"dc0669c4bc01fe0c5fe1cad888cddbb5ffb8a79555f9266f22dc1f3ea0fb5f84","input_sha256":"b583901ecd4a4381edfa32bc004eecbbbaf4dc4adf9896cc52826f9089ca76f7","limitations":["Rule-derived subjects are candidates, not verified editorial labels or calibrated model probabilities.","Coverage is distinct from event location. Unknown country/city/coordinates remain absent; no automatic geocoding.","Article geometries keep their stated precision and methodology; reproducing them is not independent coordinate verification."],"method":"controlled-rules-v1","places":[{"admin1":null,"city":null,"coordinate_note":null,"coordinate_reference_system":"OGC:CRS84","coordinate_source":null,"country":"BR","evidence":[{"field":"country","language":"en","note":"Explicit preserved editorial country/region; no city or national centroid inferred","source_urls":["https://www.epe.gov.br/pt/imprensa/noticias/epe-e-ons-revisam-nota-tecnica-com-os-requisitos-minimos-para-o-leilao-de-reserva-de-capacidade-lrcap-de-armazenamento-de-2026","https://www.ons.org.br/AcervoDigitalDocumentosEPublicacoes/NT%20ONS%20DPL%200111-2025%20-%20EPE-DEE-NT-095-2025%20-%20Requisitos%20SAE-B.pdf"]}],"geometry":null,"id":"iso3166-1:BR","kind":"country-or-area","labels":{"ar":"البرازيل","en":"Brazil","es":"Brasil","fr":"Brésil"},"match_status":"candidate","precision":"regional","role":"coverage","uncertainty_m":null}],"rules_sha256":"fb5ad3c27c91cb840f7a0a05f7f64a5cb26ad0374409ff9457f277c7092e22b4","schema_version":1,"subjects":[{"concept_id":"medtop:20000256","confidence":null,"confidence_method":null,"evidence":[{"field":"category+topics","language":"en","note":"Preserved editorial category/topic; broad candidate only","source_urls":["https://www.epe.gov.br/pt/imprensa/noticias/epe-e-ons-revisam-nota-tecnica-com-os-requisitos-minimos-para-o-leilao-de-reserva-de-capacidade-lrcap-de-armazenamento-de-2026","https://www.ons.org.br/AcervoDigitalDocumentosEPublicacoes/NT%20ONS%20DPL%200111-2025%20-%20EPE-DEE-NT-095-2025%20-%20Requisitos%20SAE-B.pdf"]}],"method":"controlled-rules-v1","rule_id":"energy-broad","status":"candidate"},{"concept_id":"medtop:20000260","confidence":null,"confidence_method":null,"evidence":[{"field":"en.title+en.summary","language":"en","note":"Subject suggested from the title or summary: battery storage","source_urls":["https://www.epe.gov.br/pt/imprensa/noticias/epe-e-ons-revisam-nota-tecnica-com-os-requisitos-minimos-para-o-leilao-de-reserva-de-capacidade-lrcap-de-armazenamento-de-2026","https://www.ons.org.br/AcervoDigitalDocumentosEPublicacoes/NT%20ONS%20DPL%200111-2025%20-%20EPE-DEE-NT-095-2025%20-%20Requisitos%20SAE-B.pdf"]}],"method":"controlled-rules-v1","rule_id":"electricity","status":"candidate"}],"taxonomy_revision":"1f2db31d811fca07e99b16d402c10e2cc2965c9df1c7b41d9be348b40a24e7fb","taxonomy_version":"IPTC Media Topics 2026-Q2"},"api_url":"https://newsverum.com/api/v1/articles/epe-ons-update-battery-storage-grid-connection-requirements?lang=en","category":"energy","content":{"key_points":[],"paragraphs":["The Energy Research Office (EPE) and Brazil’s National System Operator (ONS) revised their joint technical note on October 22 setting minimum requirements for connecting battery energy storage systems to the transmission network. EPE said the requirements apply to solutions submitted for the 2026 Capacity Reserve Auction for Storage. The revision is not an auction award or an announcement of installed battery capacity; it provides a technical framework for project design and system integration.","The document updates a joint ONS/EPE technical note first issued in 2025. EPE and ONS said the revision includes clarifications and permits mathematical models of electromechanical transients to be provided in either ORGANON or ANATEM format, at the bidder’s choice. That flexibility concerns the model-submission format; it does not remove the grid-connection criteria or eliminate the need to model system behavior where required.","The note covers supervision, control, protection and telecommunications for connections to transmission facilities. It also specifies functions for battery power converters, including voltage and frequency control, alongside requirements for grid-forming operation. These provisions address how converter-based resources interact with grid voltage and frequency during design and validation. The announcement reports no measured performance or cost result for a particular battery technology.","The underlying technical document applies to battery storage systems connected individually or in shared arrangements and describes connections to the main grid, other transmission facilities and certain shared generation connections. It expects project proponents to assess their installation’s effects on the interconnected system and provide model data used in the studies. As a result, the requirements address electrical behavior at the connection point as well as the storage asset’s energy capacity.","Grid-forming criteria concern an inverter’s ability to support voltage-source behavior rather than only follow an existing grid waveform as a current source. The note treats response to voltage and frequency changes, active and reactive power control, fault response and model validation as distinct technical subjects. These details help define the behavior storage resources need to demonstrate if they are to support variable generation and system operations.","Auction rules and connection requirements are separate layers. EPE says the revision follows guidance in the Energy Ministry’s Normative Ordinance 136/2026; the technical note focuses on the characteristics needed for projects connecting to transmission facilities. Eligibility, awards and commercial service depend on the auction documents. The October 22 update should therefore be understood as a revision clarifying technical expectations for battery projects, not as new procurement volume or a policy target."],"sections":[]},"corrections":[],"country":"BR","data":{"blocks":[{"description":{"en":"Systems and technical subjects covered in the EPE/ONS notice and connection note; counts are topic summaries, not performance metrics.","tr":"EPE ve ONS duyurusu ile bağlantı teknik notunda tanımlanan kapsama giren sistem/teknik başlıklar; sayılar performans ölçütü değil başlık dökümüdür."},"id":"epe-ons-battery-connection-requirements","items":[{"basis":"observed","label":{"en":"Model file-format options identified in the notice","tr":"Duyuruda belirtilen model dosyası biçimi seçeneği"},"measure":{"aggregation":"unspecified","frequency":"irregular","geography":"brazil","id":"br-epe-ons-battery-model-format-options","periodRole":"announcement-date","unitCode":"count"},"period":"2026-10-22","unit":"count","value":2},{"basis":"observed","label":{"en":"Connection-requirement areas named in the notice","tr":"Duyuruda sayılan bağlantı gerekliliği alanı"},"measure":{"aggregation":"unspecified","frequency":"irregular","geography":"brazil","id":"br-epe-ons-battery-connection-areas","periodRole":"announcement-date","unitCode":"count"},"period":"2026-10-22","unit":"count","value":4}],"methodology":{"en":"The document defines covered battery systems, connection points and technical requirement subjects. This tally does not measure installed power, auction participation or service capacity.","tr":"Belge batarya sistemleri, bağlantı noktaları ve teknik gereklilik başlıklarını kapsar. Bu döküm kurulu güç, ihaleye katılım veya hizmet kapasitesi ölçmez."},"sourceUrls":["https://www.epe.gov.br/pt/imprensa/noticias/epe-e-ons-revisam-nota-tecnica-com-os-requisitos-minimos-para-o-leilao-de-reserva-de-capacidade-lrcap-de-armazenamento-de-2026","https://www.ons.org.br/AcervoDigitalDocumentosEPublicacoes/NT%20ONS%20DPL%200111-2025%20-%20EPE-DEE-NT-095-2025%20-%20Requisitos%20SAE-B.pdf"],"title":{"en":"Technical scope of the battery grid-connection note","tr":"Batarya şebeke bağlantı notunun teknik kapsamı"},"type":"metrics","updatedAt":"2026-10-25T16:31:28Z"}],"version":1},"data_downloads":[{"formats":{"csv":"https://newsverum.com/api/v1/articles/epe-ons-update-battery-storage-grid-connection-requirements/data/epe-ons-battery-connection-requirements?lang=en&format=csv","json":"https://newsverum.com/api/v1/articles/epe-ons-update-battery-storage-grid-connection-requirements/data/epe-ons-battery-connection-requirements?lang=en&format=json"},"id":"epe-ons-battery-connection-requirements"}],"data_types":["metrics"],"editorial_illustration":{"alt":"Conceptual illustration of electricity generation, storage and connected 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data.","asset_id":"newsverum-v1-energy","avif_variants":[{"height":320,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-480.avif","width":480},{"height":480,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-720.avif","width":720},{"height":640,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-960.avif","width":960},{"height":800,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1200.avif","width":1200},{"height":1024,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1536.avif","width":1536}],"credit":"Newsverum","documentary":false,"height":1024,"kind":"symbolic-editorial-illustration","language":"en","scope":"section","url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1536.webp","variants":[{"height":320,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-480.webp","width":480},{"height":640,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-960.webp","width":960},{"height":1024,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1536.webp","width":1536}],"width":1536},"slug":"epe-ons-update-battery-storage-grid-connection-requirements","sources":[{"checkedAt":"2026-10-25","name":"Empresa de Pesquisa Energética (EPE) and Operador Nacional do Sistema Elétrico (ONS)","publishedAt":"2026-10-22","url":"https://www.epe.gov.br/pt/imprensa/noticias/epe-e-ons-revisam-nota-tecnica-com-os-requisitos-minimos-para-o-leilao-de-reserva-de-capacidade-lrcap-de-armazenamento-de-2026"},{"checkedAt":"2026-10-25","name":"ONS technical note","url":"https://www.ons.org.br/AcervoDigitalDocumentosEPublicacoes/NT%20ONS%20DPL%200111-2025%20-%20EPE-DEE-NT-095-2025%20-%20Requisitos%20SAE-B.pdf"}],"summary":"The revised note for battery solutions bidding in the 2026 capacity-reserve auction details controls, protection, communications and grid-forming functions.","text":"The revised note for battery solutions bidding in the 2026 capacity-reserve auction details controls, protection, communications and grid-forming functions.\n\nThe Energy Research Office (EPE) and Brazil’s National System Operator (ONS) revised their joint technical note on October 22 setting minimum requirements for connecting battery energy storage systems to the transmission network. EPE said the requirements apply to solutions submitted for the 2026 Capacity Reserve Auction for Storage. The revision is not an auction award or an announcement of installed battery capacity; it provides a technical framework for project design and system integration.\n\nThe document updates a joint ONS/EPE technical note first issued in 2025. EPE and ONS said the revision includes clarifications and permits mathematical models of electromechanical transients to be provided in either ORGANON or ANATEM format, at the bidder’s choice. That flexibility concerns the model-submission format; it does not remove the grid-connection criteria or eliminate the need to model system behavior where required.\n\nThe note covers supervision, control, protection and telecommunications for connections to transmission facilities. It also specifies functions for battery power converters, including voltage and frequency control, alongside requirements for grid-forming operation. These provisions address how converter-based resources interact with grid voltage and frequency during design and validation. The announcement reports no measured performance or cost result for a particular battery technology.\n\nThe underlying technical document applies to battery storage systems connected individually or in shared arrangements and describes connections to the main grid, other transmission facilities and certain shared generation connections. It expects project proponents to assess their installation’s effects on the interconnected system and provide model data used in the studies. As a result, the requirements address electrical behavior at the connection point as well as the storage asset’s energy capacity.\n\nGrid-forming criteria concern an inverter’s ability to support voltage-source behavior rather than only follow an existing grid waveform as a current source. The note treats response to voltage and frequency changes, active and reactive power control, fault response and model validation as distinct technical subjects. These details help define the behavior storage resources need to demonstrate if they are to support variable generation and system operations.\n\nAuction rules and connection requirements are separate layers. EPE says the revision follows guidance in the Energy Ministry’s Normative Ordinance 136/2026; the technical note focuses on the characteristics needed for projects connecting to transmission facilities. Eligibility, awards and commercial service depend on the auction documents. The October 22 update should therefore be understood as a revision clarifying technical expectations for battery projects, not as new procurement volume or a policy target.","title":"EPE and ONS update grid-connection note for battery storage projects","topics":[],"translations":[{"api_url":"https://newsverum.com/api/v1/articles/epe-ons-update-battery-storage-grid-connection-requirements?lang=tr","language":"tr","url":"https://newsverum.com/tr/news/epe-ons-update-battery-storage-grid-connection-requirements"},{"api_url":"https://newsverum.com/api/v1/articles/epe-ons-update-battery-storage-grid-connection-requirements?lang=en","language":"en","url":"https://newsverum.com/en/news/epe-ons-update-battery-storage-grid-connection-requirements"}],"url":"https://newsverum.com/en/news/epe-ons-update-battery-storage-grid-connection-requirements"},"version":"1"}