Storage auction · Brazil
One bid.
Fifteen years of that system.
In Brazil's 2026 storage auction, the price you bid locks a fifteen-year obligation: an efficiency you have to hold, an availability you declare, an augmentation plan you fund. This page reads those rules in plain language, from the primary sources, and marks what is already official apart from what is still a proposal.
How to read the dates and numbers below
Defined in a published norm: Portaria 136/2026 and its annexes.
From a technical note under public consultation. It can still change in the final edital.
The clock
Two dates are fixed. The rest is still a proposal.
The auction dates and the fifteen-year term come from a published norm. The consultation and edital calendar comes from a technical note that is itself open for public comment. We mark each one accordingly.
- 2 Dec 2026Official
National auction (2028-A). Requires BNDES accreditation; its volume is a reserve carved out of the total.
Portaria 136/2026
- 4 Dec 2026Official
Open auction (2028-B). No local-content requirement.
Portaria 136/2026
- 30 Jul to 14 Sep 2026Proposed
Public consultation on the draft edital and the CRCAP capacity contract.
Technical note 10/2026 (ANEEL and EPE), proposed
- 29 Oct 2026Proposed
Edital published. This is the moment the calendar locks.
Technical note 10/2026, proposed
- 1 Aug 2028Official
Supply begins. The capacity contract runs fifteen years, to 2043.
Portaria 136/2026
Once the edital is published, every proposed date above becomes firm. Until then, plan against the ranges, not the day.
The rules
Five rules that outlive the bid.
Read again from the primary sources, in the language an engineer uses. Each becomes a fifteen-year obligation the moment you win.
85% is efficiency, not capacity
OfficialThe system has to return at least 85% of the energy it takes in, measured at the metering point across the whole contract, not once at delivery. It is a round-trip efficiency floor. A battery can still hold plenty of capacity and fail it if the losses climb.
Portaria 136/2026, art. 7 (measured at the PMI)
About one full cycle a day, not two
ProposedThe operating envelope is capped near one full equivalent cycle per day on average, roughly 366 a year, with headroom for two on peak days. That throughput sits inside standard warranty limits, the opposite of the punishing duty some assume.
EPE methodology, to be confirmed in the draft edital
You declare your own availability, then live with it
OfficialThere is no reference value for a battery's availability index. The developer declares it, hour by hour, and files the yearly schedule each December. The number you write becomes the benchmark your penalties are measured against for fifteen years.
EPE registration and technical note 10/2026
Grid-forming is mandatory
OfficialThe system has to be able to form the grid, not just follow it: hold voltage and frequency on its own. It is a habilitation requirement, not an upgrade you choose later.
ONS technical note DPL 0111/2025
Local content, but only in the national auction
OfficialThe 2 December auction requires BNDES accreditation through one of four local-content routes; the 4 December auction has none. Accreditation is a contract condition, not a loan you are forced to take.
Portaria 136/2026, art. 10 and BNDES CFI rules
The commitment
The same fifteen-year commitment, described on the home page.
Degradation, augmentation and availability behave the same way whether the contract is a Brazilian capacity auction or an OEM warranty. We describe that core once, generically, and it holds here too.
Read the commitmentWhere Kyklios fits
Two studies, one decision.
Winning this auction well takes two layers of analysis. They are complementary, and Kyklios is the second.
The system study
Demand, siting, dispatch, the price you can afford to bid. It says where to build and how much to offer. This is the layer most bidders already have.
The asset study
What that dispatch does to the battery across fifteen years: how it degrades, when augmentation is due and at what cost, and how the efficiency and availability you declared are protected in the supply contract. This is the layer Kyklios builds.
Why it matters before the bid
The efficiency you promise and the augmentation plan you assume are fixed the moment you bid. Afterwards you can only administer them. The asset study belongs before the price, not after the award.
The service
Three ways to bring us in.
One offer, three depths. Each level includes the one before it. The price is set in a scoping call, never on this page.
A go or no-go read on your configuration
In a few days: whether your configuration survives the auction rules, and the red flags to fix before you commit.
A defensible number to bid, and the study behind it
The core. An independent SOH curve with its band, a conditional verdict, the eligibility check against the auction duty, the efficiency chain read at the PMI, the augmentation calendar and a review of the warranty terms. Enough to price the Fixed Revenue and defend it in due diligence.
Your bid, protected through to the supply contract
After you win: the same numbers carried into the supply contract, so every obligation the auction puts on you is passed to your supplier with its figure behind it. Delivered with a local signing partner.
Questions
Three questions to ask before you fix the price.
When the revenue is a capacity or availability payment, three questions decide whether the number is safe. They sit with the other seven.
See the questionsTalk to us
Bringing a bid to this auction?
Send the project. If the asset study will not move your decision, we say so on the first call.
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