TUST.br

Official ANEEL data

TUST (transmission tariff) by busbar — no digging through ANEEL spreadsheets

The tariff that generators and free consumers pay to use the transmission grid — per connection point.

For connection engineers and project developers.

Look up the Tarifa de Uso do Sistema de Transmissão (TUST) for generation and load by substation, with the tariff cycle and source act. Estimate your EUST from contracted MUST.

1.774 busbars with TUST in cycle 2026/2027 · 1.825 in history since 2023/2024 (Despacho nº 2.269/2026)

Busbars (generation, 2026/2027)
923
Avg. TUST (generation)
R$ 8,69/kW.month
Lowest TUST (generation)
R$ 5,67/kW.month
Highest TUST (generation)
R$ 19,45/kW.month

Sample busbars

ARARAQUARA500 kV
Generation R$ 8,67 /kW.month
ANGRA500 kV
Generation R$ 8,54 /kW.month
ADRIANOPOLIS500 kV
Generation R$ 7,98 /kW.month
TRES IRMAOS440 kV
Generation R$ 9,82 /kW.month
ACAILANDIA500 kV
Generation R$ 12,90 /kW.month
AGUA VERMELHA500 kV
Generation R$ 9,68 /kW.month
See all busbars (in Portuguese) →

How it works

  • Nodal: each busbar has its own TUST based on electrical location on the Rede Básica (basic transmission grid). Values in R$/kW.month.
  • Generation × Load: the tariff differs by segment; load has peak/off-peak components.
  • EUST: the monthly charge is MUST × TUST. Calculate on the busbar page (in Portuguese).
Understand TUST (in Portuguese) →

Frequently asked questions about TUST

Where can I look up the TUST for a busbar or substation?

You can look up a busbar or substation TUST by searching its name or bus number. The result shows the available official generation and load tariffs by tariff cycle and identifies the originating ANEEL act.

How many busbars have a TUST in the 2026/2027 cycle?

The 2026/2027 cycle has 1.774 busbars with a generation or load TUST in this dataset. The history since 2023/2024 contains 1.825 busbars, so the historical total is larger than the current-cycle coverage.

What is the average generation TUST in the 2026/2027 cycle?

The average generation TUST in the 2026/2027 cycle is R$ 8,69/kW.month. Published generation tariffs range from R$ 5,67 to R$ 19,45/kW.month, depending on the busbar.

What is the current TUST tariff cycle?

The current tariff cycle in this dataset is 2026/2027, approved by Despacho nº 2.269/2026. Tariffs are presented by busbar and separated into generation and load.

How do I calculate EUST from MUST and TUST?

Monthly EUST is calculated by multiplying contracted MUST in kW by the busbar TUST in R$/kW.month. If MUST is stated in MW, first multiply it by 1,000 to convert it to kW.