Entry · Models
NEWAVE
Which models go into calculating the short-term price?
Acronyms: CCEE, Electric Energy Trading Chamber; PLD, Settlement Price for Differences (spot price).
In one sentence
One of the three computer models cited by the CCEE in calculating the PLD, alongside DECOMP and DESSEM.
Real example
On Sep 30, 2026, the average of the 24 hours of the PLD in the Southeast/Center-West was R$ 135.25/MWhNature of the data: Calculated. According to the CCEE, each hour of this price comes from a calculation with the Newave, Decomp and Dessem models; the observatory does not publish NEWAVE outputs.
No Check this number record of its own in this example: the number comes from the panel's published database, which carries the source and the reference date.
Calculated: Deterministic transformation made by Scrutiniums, with a published formula.
Why it matters
How it is measured
Computer model; not a quantity. Horizon and formulation were not checked in a technical document.
Not to be confused with
Both are cited by the CCEE in calculating the PLD. DECOMP has output published by the ONS and used here (the weekly CMO); the technical description of NEWAVE was not checked, and the observatory does not publish its output.
What cannot be concluded
- The technical documentation of the model was not read.
Related entries
See in the panel
Official source
In other words: every day the CCEE calculates the prices for each hour of the following day, in each submarket, with three computer models, starting from the marginal operating cost and respecting a minimum limit and two maximum limits.
Literal excerpt from the document
Portuguese only“O Preço de Liquidação das Diferenças (PLD) é calculado pela Câmara de Comercialização de Energia Elétrica (CCEE) diariamente para cada hora do dia seguinte, considerando a aplicação dos limites máximos (horário e estrutural) e mínimo vigentes para cada período de apuração e para cada submercado. Este cálculo é realizado por modelos computacionais (Newave, Decomp e Dessem) e tem como base o Custo Marginal de Operação (CMO).”
ONSOpen data portal, dataset “CVU das Usina Térmicas” (description and data dictionary)
Literal excerpt from the document
Portuguese only“Custo Variável Unitário (CVU) de usinas térmicas considerado no Programa Mensal da Operação, conforme utilizado na execução do modelo NEWAVE, DECOMP, DESSEM, além de seu uso nas decisões de programação e acompanhamentos dos custos da operação.”
Documents accessed and text checked on Sep 27, 2026.