Brazil. Status: operational.
Wholesale design: Physical dispatch is centrally optimized by ONS using audited costs and system models. CCEE registers bilateral and regulated contracts and financially settles measured-versus-contracted differences at the model-derived PLD by submarket and hour.
Sistema Interligado Nacional / CCEE short-term market (Brazil) has 6 ancillary-service products, across 6 families — frequency containment, automatic frequency restoration, operating reserve, reactive power & voltage, black start & restoration and emergency control: Autorrestabelecimento Integral ou Parcial, Reserva de Potência Operativa / Despacho Complementar para Manutenção da Reserva, Controle Primário de Frequência, Suporte de Reativos, Controle Secundário de Frequência, Sistema Especial de Proteção. Response timing, direction and eligibility for each are in the table below; a product's full record lists the official sources behind it.
Every value below comes from the official sources listed in that product's full record. Most products cite more than one, and the published sources do not say which of them states each individual value, so the binding is to the product's record rather than to a single document. A missing line means the source does not state that value — never that the value is zero.
Scroll the table sideways for the rest of the columns →
| Service | How it activates | Response | Sustained delivery | Procurement |
|---|---|---|---|---|
| Frequency containment | ||||
| Controle Primário de Frequência CPF symmetric operational | Response type continuous; automatic local Trigger Frequency deviation and unit governor/control settings under ONS procedures. | Stated response Unit/control-specific under ONS technical procedures | Varies ONS-determined operational need Bought Continuous system operation Through mandatory provision; regulated cost recovery Pricing design Mandatory/regulated provision and applicable ancillary-service cost recovery | |
Full record for Controle Primário de Frequência — document bound, page for these figures not recorded What it is for Locally and automatically contain frequency deviations following generation-load imbalance. Who can provide it Generating units meeting ONS technical requirements. What the source does not state The source states a response time in its own words and a procurement volume in its own words. It does not state how long delivery has to be sustained. | ||||
| Automatic frequency restoration | ||||
| Controle Secundário de Frequência CSF/CAG symmetric operational | Response type continuous; automatic central Trigger ONS automatic-generation-control signal. | Stated response Plant- and control-area-specific under ONS procedures | Varies ONS-determined operational need Bought Continuous system operation Through mandatory provision; regulated cost recovery Pricing design Regulated ancillary-service treatment | |
Full record for Controle Secundário de Frequência — document bound, page for these figures not recorded What it is for Centrally restore frequency and interchange using automatic generation control. Who can provide it ONS-qualified units and control areas. What the source does not state The source states a response time in its own words and a procurement volume in its own words. It does not state how long delivery has to be sustained. | ||||
| Operating reserve | ||||
| Reserva de Potência Operativa / Despacho Complementar para Manutenção da Reserva RPO/Despacho Complementar up operational | Response type scheduled; manual Trigger ONS dispatch and reserve criteria. | No deadline established Operationally specified by ONS; no universal value published | Varies Reliability-study and dispatch-specific Bought Operational scheduling and real-time dispatch Through administrative assignment; regulated cost recovery Pricing design Regulated incremental-cost/ancillary-service remuneration where applicable | |
Full record for Reserva de Potência Operativa / Despacho Complementar para Manutenção da Reserva — document bound, page for these figures not recorded What it is for Maintain sufficient operational power reserve through synchronized and additional dispatchable resources. Who can provide it ONS-dispatchable generation and qualifying resources. What the source does not state The source states a procurement volume in its own words. It does not state a response time or how long delivery has to be sustained. | ||||
| Reactive power & voltage | ||||
| Suporte de Reativos non-directional operational | Response type continuous; automatic local; manual Trigger Voltage setpoints and ONS instruction. | Stated response Equipment- and instruction-specific | As the source describes it Continuous or as instructed | As stated Location- and study-specific Bought Continuous/operational Through mandatory provision; regulated cost recovery Pricing design Regulated ancillary-service remuneration |
Full record for Suporte de Reativos — document bound, page for these figures not recorded What it is for Provide reactive power and voltage support at locations required for secure operation. Who can provide it Qualified generators and reactive compensation equipment. | ||||
| Black start & restoration | ||||
| Autorrestabelecimento Integral ou Parcial operational | Response type post-fault; manual; event-triggered Trigger Blackout/restoration plan. | Stated response Facility- and restoration-plan-specific | As the source describes it Restoration-plan-specific | As stated Restoration-plan-specific Bought Contracted/assigned under restoration plans Through administrative assignment; regulated cost recovery Pricing design Regulated ancillary-service remuneration |
Full record for Autorrestabelecimento Integral ou Parcial — document bound, page for these figures not recorded What it is for Start and restore generating capability without external supply, supporting system restoration. Who can provide it Facilities certified for full or partial self-restoration. | ||||
| Emergency control | ||||
| Sistema Especial de Proteção SEP non-directional operational | Response type post-fault; automatic local; event-triggered Trigger Scheme-specific protection logic. | Stated response Scheme-specific | As the source describes it Scheme-specific | As stated Study-specific Bought As required by system studies Through administrative assignment; mandatory provision Pricing design Regulated treatment |
Full record for Sistema Especial de Proteção — document bound, page for these figures not recorded What it is for Execute automatic remedial actions following defined system conditions or contingencies. Who can provide it Configured protection and control schemes. | ||||
Sistema Interligado Nacional / CCEE short-term market (Brazil) has 1 capacity/adequacy arrangement: Leilão de Reserva de Capacidade na forma de Potência. The official sources do not say whether it is a central capacity market. Responsibility sits with MME / ANEEL / CCEE.
operational periodic auctions
Central procurement of power availability through capacity-reserve contracts. The planned 2025 auction was cancelled; new auctions cleared in 2026.
auction pay as bid
Current as of · from the Global Electricity Market Catalogue v1.2.0 (compiled to , CC BY 4.0, rendered here with wording edited for readability). Facts belong to the linked official authorities; verify the current rules before design or bidding decisions.
The markets index holds the full set. For what the grid demands of a battery here, see the grid-code ride-through atlas.