Brazil's ANEEL approves Group A market opening rules, creates Open Energy
- Rules cover medium- and high-voltage Group A consumers
- Open Energy gives consumers control over their consumption data
- Most simplified-model AS, A4 units get 90-day regular migration deadline
Photo: Wikimedia Commons - Novoklimov, CC BY 4.0What changed The rule reduces the regular migration deadline for most AS and A4 units under the simplified model from 180 days to 90 days.
BRASILIA, Oct 27 — The board of Brazil's ANEEL on Tuesday, Oct 27, approved revised rules for opening the electricity market to Group A consumers served at medium and high voltage, and created Open Energy, a framework for sharing consumers' energy data.
The agency said the decision also sets measures to increase competition, make information more transparent and strengthen consumers' freedom to choose their supplier. The board approved it at an extraordinary meeting.
Under Open Energy, consumers will be able to access their consumption, billing and metering data in a standard format. With their prior consent, they will be able to share that data with institutions of their choice, ANEEL said. Use of the system will be free.
Within 12 months of the rule's publication, a comparison platform for products and prices offered by energy traders must be available. Within 24 months, data sharing through standardized application programming interfaces (APIs) must be in place. The Electric Energy Trading Chamber (CCEE) will provide the comparison platform.
For most units in the AS and A4 subgroups that fall under the simplified model, the regular deadline to migrate to the free market falls from 180 days to 90 days. Other units keep the 180-day deadline.
Distributors and traders in the same economic group may no longer share infrastructure or staff. This ban applies to new sharing arrangements as soon as the rule is published. When the two companies share a brand, the trader must state that its prices are not regulated by ANEEL. The branding rules take effect in 180 days.
The rule follows Public Consultation No. 7/2025, which received 1,515 contributions from 71 participants, the agency said. Rules for Group B low-voltage consumers will be handled in a separate process under the 2026-2027 Regulatory Agenda.