Power-System-Stats — Brazilian power generation mix (SIN)

Interactive figures on the transformation of the Brazilian electricity matrix (Sistema Interligado Nacional, SIN), 2010–2025.

Live page: https://lampspuc.github.io/Power-System-Stats/

Contents

• Figure 1 — Annual generation by source: stacked-area charts of the yearly generation mix (hydro, wind, solar incl. distributed generation, thermal), in share (%) and in absolute terms (GWh/h · TWh/year).
• Figure 2 — Average 24 h hourly profiles: mean hourly generation by source (hydro, wind, solar+DG) for the dry season (May–Nov), the wet season (Dec–Apr of the following year) and the full year.

The page is trilingual (PT · EN · ES), has a light/dark theme, year filtering, a season selector, and a per-box button to export publication-quality PNG figures.

Data and method

Source: ONS — Subsystem Energy Balance (SIN aggregate) and Verified Load / distributed generation (MMGD component), accessed through the "setor elétrico" connector. Distributed PV (MMGD) is added to solar (ONS MMGD series starts ~2019/2020). Thermal includes fossil, biomass and nuclear. Hourly profiles are the mean generation in each hour of the day over all days of each season's months.

Usage

index.html is a single self-contained file (Plotly.js is embedded); just open it in a browser, or view it via GitHub Pages at the link above.

License

Code: MIT. Figures and derived data: CC BY 4.0.