Brazil Energy Tenders: First Battery Storage Auctions (December 2026)

Last updated: October 29, 2026 · Last verified: October 29, 2026

Brazil is holding its first-ever battery storage auctions in December 2026, a pair of sessions created to procure standalone capacity for a grid that regulators say already has room to connect roughly 56 GW of storage. The framework comes from the Ministry of Mines and Energy (MME) and power regulator ANEEL, and it splits the procurement into two separate auctions with different eligibility rules. As of this page’s last verification, the final tender notices (editais) had not yet been published in the Diário Oficial da União, so some details below reflect the draft stage and industry estimates rather than confirmed results.

Brazil’s First Storage Auctions at a Glance

How the Two Auctions Differ

Both sessions procure standalone battery energy storage capacity under Brazil’s “capacity reserve” model (reserva de capacidade), where generators — not consumers directly — bear the cost of the contracted capacity through capacity reserve contracts. The distinguishing feature between the two is local content:

• Auction 5/2026 is limited to projects that meet local-content requirements and are accredited under BNDES (Brazil’s national development bank) financing criteria — designed to steer demand toward domestically assembled or manufactured storage equipment.
• Auction 6/2026 carries no local-content requirement, opening the field to any eligible storage system regardless of where it was manufactured.

Both auctions award 15-year capacity reserve contracts, with the supply obligation starting August 1, 2028 — meaning winning projects have roughly 20 months from the auction date to reach commercial operation.

Legal and Regulatory Timeline

No source reviewed for this page confirmed that the final editais had been published in the Diário Oficial as of late October 2026; law-firm and trade-press coverage through September 2026 described the notices as still at the public-consultation and audiência pública stage. Bidders should verify the final, binding terms directly against ANEEL’s official publication before relying on any figure in this page.

How Much Capacity Is Up for Grabs?

Official capacity targets for the two auctions were not published in the sources reviewed for this page. Industry estimates circulating in trade press put the first auction at somewhere between 2 GW and 5 GW of power, each with roughly four hours of discharge duration, and cite expected supplier investment across both auctions in a range of R$16 billion to R$20 billion. These are unofficial, industry-sourced estimates, not figures from MME, ANEEL or EPE, and should be treated as indicative rather than confirmed until the final editais are published.

Separately, The Daily Energy has reported that Brazil’s transmission grid has roughly 56 GW of connection capacity available for battery storage ahead of these auctions. That figure describes grid connection headroom — how much storage the grid could technically accommodate — and is not the same thing as the volume these December auctions will actually procure; conflating the two would overstate the auctions’ near-term scale.

Why These Auctions Matter

These are Brazil’s first dedicated standalone battery storage auctions, a new procurement category distinct from the solar-plus-storage and wind-plus-storage arrangements seen elsewhere in Latin America. The two-track design — one auction with local-content and BNDES-financing conditions, one without — gives Brazil a direct policy lever to test whether domestic manufacturing requirements change bidding behavior or pricing, a question also being tested in parallel in markets such as the standalone battery tenders India’s SECI is running and in the US Section 45X manufacturing tax credit, which rewards domestic battery-cell production through the tax code rather than through auction eligibility rules.

Frequently Asked Questions

When is Brazil’s first battery storage auction?
Brazil is holding its first two standalone battery storage capacity auctions on December 2, 2026 (Auction 5/2026) and December 4, 2026 (Auction 6/2026).

What is the difference between Brazil’s Auction 5/2026 and Auction 6/2026?
Auction 5/2026 is restricted to projects meeting local-content requirements and accredited under BNDES financing criteria. Auction 6/2026 has no local-content requirement and is open to any eligible storage system.

How long are the storage contracts from Brazil’s December 2026 auctions?
Winning projects receive 15-year capacity reserve contracts, with the supply obligation starting August 1, 2028.

Who pays for Brazil’s battery storage auction contracts?
Under the capacity-reserve model, the cost of the contracted storage capacity is borne by electricity generators through capacity reserve contracts, rather than being charged directly to consumers — though the final cost-allocation rules should be confirmed against ANEEL’s published edital.

Related The Daily Energy Pages

• Brazil’s Grid Has Room for 56 GW of Battery Storage Ahead of December Auctions
• India Battery Storage Tenders: SECI BESS Tracker (2026)
• Kazakhstan Energy Tenders: 2026 Renewable Auction Programme
• Section 45X: US Battery, Solar and Wind Manufacturing Tax Credit (2026)

Sources

• Ministry of Mines and Energy (MME), Portaria No. 136/2026 (June 3, 2026)
• ANEEL, Audiência Pública nº 5/2026 (draft storage-auction notices, opened July 28, 2026)
• BMA Advogados, Cescon Barrieu and Mayer Brown client briefings on Brazil’s first energy storage auctions (2026)
• ESS News and PV Magazine reporting on the draft auction rules and capacity estimates (2026)
• The Daily Energy, “Brazil’s Grid Has Room for 56 GW of Battery Storage Ahead of December Auctions” (October 4, 2026)

Illustrative image. Photo: Kecko from Eastern Switzerland, CC BY 2.0, via Wikimedia Commons — source