Entry · Transition

MMGD: Distributed micro and mini generation

What generation connects to the grid through the consumer's facilities?

● checked against the primary source on Oct 1, 2026Source: ANEEL and ONS

Acronyms: ONS, National Electric System Operator; ANEEL, Brazilian Electricity Regulatory Agency.

In one sentence

Generating plant using a renewable source or qualified cogeneration connected to the distribution grid through the facilities of consumer units: microgeneration up to 75 kW of installed capacity and minigeneration above 75 kW up to 3 MW (up to 5 MW in specific situations of Law No. 14.300/2022).

Real example

Installed capacity of distributed micro and mini generation in the ANEEL register

53,965.6Portuguese onlyMWNature of the data: Observed

Jan 1, 2004 to Sep 29, 2026 · Brazil

Source: ANEEL, Relação de empreendimentos de Mini e Micro Geração Distribuída. Reference up to Sep 29, 2026. Captured on Sep 30, 2026.

Installed capacity of MMGD in the ANEEL register: capacity, not generated energy.

See in the panel: Transition: micro and mini generation

Observed: Value published directly by the official or primary source.

Why it matters

Under the Electric Energy Compensation System (SCEE), surplus energy goes to the grid and becomes a credit to offset consumption, at the same location, at another unit of the same holder (remote self-consumption), among condominium members or among the participants in shared generation. Since Apr 29, 2023, the ONS includes the estimated value of MMGD in the generation and load data of the Energy Balance.

How it is measured

ANEEL publishes the list of installations, with number and installed capacity in kW (the sum of the nominal active electrical power of the generating units), by distribution utility, municipality, source and connection date: it is capacity, not energy. In the verified load, the ONS publishes the portion of load served by MMGD, in MWavg per half hour, separated from the supervised portion and from the portion measured for billing; on the Energy Balance page, the ONS itself calls it an estimated value.

Unit: kW of installed capacity (ANEEL); MWavg of the load portion (ONS)

Not to be confused with

Verified generation
MMGD connects to the distribution grid through the facilities of consumer units and is published as installed capacity (ANEEL) and as an estimated portion of the load (ONS); centralized generation is verified hour by hour at the plants in the ONS balance. Installed capacity is not generated energy.

What cannot be concluded

Installed capacity is capacity, not generated energy; the generation of each unit is not published in the open data.
The ONS calls the MMGD portion an estimated value, and the documents consulted do not describe the estimation method.
In remote self-consumption and shared generation, the credit can be used at a place other than that of the generating unit.

Related entries

See in the panel

Official source

ANEELANEEL page “Micro e Minigeração Distribuída” on the gov.br/aneel portal, accessed on Oct 1, 2026
In other words: microgeneration goes up to 75 kW and minigeneration from more than 75 kW up to 3 MW (5 MW in cases provided for in the law), and both connect to the distribution utility's grid through the installation of a consumer unit.
Literal excerpt from the document
Portuguese only“Denomina-se microgeração distribuída a central geradora com potência instalada até 75 quilowatts (KW). Já minigeração distribuída é aquela com potência acima de 75 kW e menor ou igual a 3 MW (podendo ser até 5 MW em situações específicas, nos termos dos incisos IX e XIIII e do Parágrafo Único do art. 1º da Lei nº 14.300/2022). Ambas são conectadas à rede de distribuição por meio de instalações de unidades consumidoras.”
ANEELSame page, participation modalities in the SCEE, accessed on Oct 1, 2026
Literal excerpt from the document
Portuguese only“autoconsumo local - quando a energia é gerada e compensada no mesmo local onde está instalada a MMGD; autoconsumo remoto - quando a energia pode ser gerada em um local e compensada em outro, desde que em unidades consumidoras do mesmo titular; geração distribuída em empreendimentos de múltiplas unidades consumidoras - a energia gerada pode ser repartida entre os condôminos em porcentagens ou ordem de prioridade definidas pelos próprios consumidores; e geração compartilhada - diversos interessados podem se unir por meio de consórcio, cooperativa, condomínio civil voluntário ou edilício ou qualquer outra forma de associação civil, instituída para esse fim para instalar uma ou mais centrais de MMGD e utilizar a energia gerada para compensação do consumo de todos os participantes.”
ANEELOpen data portal, description of the dataset “Relação de empreendimentos de Mini e Micro Geração Distribuída”, accessed on Oct 1, 2026
Literal excerpt from the document
Portuguese only“Os dados são expressos em quantidades e potência instalada em kW (quilowatt). A quantidade corresponde ao número de empreendimentos de MMGD conectados no período especificado. A potência instalada é definida pelo somatório da potência elétrica ativa nominal das unidades geradoras.”
ONS“Energia Agora” page, Energy Balance (introductory text), accessed on Oct 1, 2026
Literal excerpt from the document
Portuguese only“A partir de 29/04/2023, o valor estimado da micro e minigeração distribuída (MMGD) também passou a incorporar os dados de geração e carga apresentados nesta página.”
ONSData dictionary of the Verified Load dataset, version 1.1 of Oct 30, 2023, accessed on Oct 1, 2026
Literal excerpt from the document
Portuguese only“Valor da Carga atendida por MMGD em MWmed integralizada no final do intervalo da semi-hora (val_cargammgd).”

Documents accessed and text checked on Oct 1, 2026.