Enacom and CEMIG won the ECO Award 2025, from Amcham Brazil, in the Products or Services category (small and medium-sized companies), with the project “Deciphering the climate with Artificial Intelligence: how climate change affects energy consumption – Climate Diagnostic for CEMIG”. This edition gathered 147 projects from more than 120 companies across the country, according to Amcham Brazil.
What the Climate Diagnostic is
The Climate Diagnostic is an Enacom solution that combines artificial intelligence and statistical modeling to measure how much the weather influences electricity demand. The model crosses public climate data (ERA5 and INMET) with CEMIG’s historical energy-injection data, estimates temperature by substation at hourly resolution and separates the climate effect from other factors, such as GDP, holidays and regulatory changes. The pilot phase used geolocated 2023 data.
Results presented in the project
- Temperature sensitivity: in Minas Gerais, each 1 °C increase corresponded to about 3.09% more electricity consumption (2022–2023 comparison).
- Heat waves: with at least five days at 5 °C above the historical average, consumption can rise about 15%.
- Additional demand: climate factors added about 750 GWh of consumption during the 2023 heat waves in Minas Gerais.
- Financial impact: average estimate of R$ 739 million (confidence interval of R$ 551 million to R$ 927 million), about 2.7% of revenue from consumption classes.
- Forecasting: about 50% reduction in temperature-related forecast errors.
The figures are those presented by Enacom in the project’s entry in the ECO Award.
From diagnostic to climate reporting
CEMIG used the results to strengthen its answers to the CDP climate questionnaire, and a report aligned with CDP Module 3 was validated by the company’s sustainability team. A second phase, now underway, will link consumption to financial indicators. Because the solution relies on public climate data, it can be replicated by other power distributors.
Digital Twins and AI for the energy sector
Enacom develops optimization solutions and Digital Twins for power generation, transmission and distribution. Explore the solutions for the Energy sector and the hydropower optimization case at CEMIG.