The electricity sector is back at the center of the debate with discussions about the "Eletrolão" scandal.

Summary

The recent public debate surrounding the term "Eletrolão" has brought back into focus historical discussions about the Brazilian tariff structure, the growth of sector charges, and the economic and regulatory sustainability of the national electricity sector.

Although the public narrative often simplifies the issue from a predominantly political perspective, the reality of the sector reveals a significantly more complex phenomenon, involving the expansion of the CDE (Energy Development Account), mandatory generation contracting, growth in curtailment, locational distortions, energy oversupply in certain periods, and structural insufficiency of systemic flexibility mechanisms.

This article proposes a technical-regulatory and economic analysis of the current scenario of the Brazilian electricity sector, examining the impacts of the expansion of tariff charges, the limits of the cross-subsidy model, the challenges arising from the massive integration of intermittent renewable sources, and the growing need for regulatory modernization.

It can be concluded that the current crisis does not stem exclusively from a single public policy or a specific source of generation, but rather from a combination of regulatory choices, uncoordinated expansion, operational inflexibilities, and the absence of adequate storage mechanisms and efficient locational signaling.

1. Introduction

In recent years, the Brazilian electricity sector has undergone an unprecedented structural transformation. The accelerated expansion of distributed generation, the growth in the share of intermittent renewable sources, the progressive opening of the free energy market, the need to expand transmission, and the increase in sector charges have significantly altered the operational, regulatory, and economic dynamics of the SIN (National Interconnected System).

In this context, the use of the expression "Eletrolão" gained traction in the public debate, usually associated with the social perception of excessive increases in electricity tariffs due to subsidies, sector charges, and regulatory decisions considered economically inefficient.

However, simplifying the debate to a purely political-ideological perspective proves insufficient to understand the complexity of the phenomenon.

Tariff formation in the Brazilian electricity sector depends on the simultaneous interaction between regulatory, contractual, operational, fiscal and structural factors, involving generation, transmission, distribution, energy security, systemic expansion and sectoral public policies.[1]

Therefore, this article seeks to analyze, from a technical-regulatory perspective, the main factors related to the current tariff pressure observed in the Brazilian electricity sector, especially with regard to: the expansion of CDE (Energy Development Account); to the compulsory contracting of generation sources; to the increase in curtailment; to the distortions associated with the integration of renewables; to the discussion about subsidies for distributed generation; and to the growing need for operational flexibility of the national electricity system.

2. The CDE (Energy Development Account) and the expansion of sectoral charges

The CDE (Energy Development Account), established by Law No. 10.438/2002, has consolidated itself over the last few decades as one of the main instruments for financing public policies in the Brazilian electricity sector.[2]

Its initial objective involved universalizing electricity service; affordable tariffs; competitiveness of incentivized sources; tariff subsidies; and regional energy development.

However, the continuous expansion of CDE's responsibilities has transformed this charge into one of the main drivers of tariff pressure in the sector.

Currently, CDE finances tariff discounts; subsidies for incentivized sources; social programs; universalization policies; regulatory compensations; various sectoral benefits; and a significant part of national energy public policies.[3]

The progressive growth of this burden has generated significant debate regarding the economic and regulatory sustainability of the current model.

Recent data indicate a significant increase in the CDE budget for 2026, exceeding R$ 50 billion, with a direct impact on the national tariff composition.[4]

In this scenario, a central discussion emerges: to what extent does the continuous expansion of sector-specific charges remain compatible with the principles of tariff moderation and economic efficiency foreseen in the Brazilian regulatory model?

3. The expansion of renewables and the new operational paradox of the SIN (National Interconnected System).

The accelerated expansion of intermittent renewable sources, especially solar and wind, has produced profound changes in the operational behavior of the National Interconnected System.

Brazil has begun to experience phenomena that were previously of little relevance in the national electrical system, among which curtailment stands out.

Curtailment refers to the compulsory reduction or interruption of electricity generation for operational, electrical or systemic reasons.[5]

In practical terms, this means that some of the available renewable energy is no longer effectively used by the system.

The growth of this phenomenon highlights one of the main contemporary paradoxes of the Brazilian electricity sector: while the country expands its renewable capacity, the system faces increasing difficulties in fully absorbing this energy.

This situation stems from a combination of several factors: structural transmission deficiencies; geographic concentration of renewable expansion; lack of large-scale storage; low operational flexibility; inflexibility of certain contracted thermal plants; and limitations in systemic coordination.[6]

As a consequence, the country ends up simultaneously experiencing an excess of renewable energy generation at certain times; energy waste; mandatory dispatch of more expensive sources; and growth in systemic costs.

The problem is no longer just about expanding supply, but also about integration capacity, storage, and operational flexibility.

4. Compulsory hiring and economic efficiency of the system

Another central point of the contemporary regulatory debate involves the mandatory contracting of certain generation sources.

Historically, the Brazilian electricity sector has used mandatory contracting mechanisms as instruments of public energy policy, security of supply and regional development.[7]

However, the continuation of these contracts in a context of partial energy oversupply has begun to generate increasing economic and regulatory questioning.

From a technical perspective, the main discussion does not necessarily lie in the nature of the contracted source, but in the systemic efficiency of the contractual obligation imposed on the market.

When the system already exhibits oversupply during certain periods; increased curtailment; and limitations in energy absorption, imposing new contracting obligations can exacerbate economic and tariff distortions.

In this scenario, questions arise regarding the economic rationality of the expansion; the allocative efficiency of the system; tariff moderation; and the correct locational direction of energy expansion.

5. Distributed generation, subsidies and regulatory security

The expansion of distributed generation has significantly transformed the dynamics of the Brazilian electricity sector. The model has consolidated with strong regulatory and legislative support, culminating in the enactment of Law No. 14.300/2022.[8]

However, the rapid growth of this modality has generated debates about the economic impacts of the full compensation previously applied to consumers participating in the SCCE (Electric Energy Compensation System).

From an economic standpoint, it is undeniable that the compensation model produces distributive and tariff effects. However, regulatory analysis requires simultaneous consideration of the principle of legal certainty.

Millions of consumers made long-term investments based on existing regulatory rules, regulatory predictability, and legitimate institutional trust.

In this context, abrupt or retroactive changes to the originally established conditions can lead to regulatory uncertainty; increased capital costs; reduced investment; and a loss of institutional credibility for the Brazilian electricity sector.

The issue, therefore, is not limited to the existence or not of subsidies, but to the compatibility between the economic sustainability of the system; affordable tariffs; and regulatory stability.

6. The Brazilian electricity sector and the transition to the era of flexibility.

The current stage of transformation in the Brazilian electricity sector reveals a significant paradigm shift. Historically, the sector's main challenge was expanding energy supply. Currently, the central challenge has become systemic flexibility.

The growth of intermittent renewables requires energy storage; demand response; time arbitrage; operational intelligence; digitalization; and new regulatory flexibility mechanisms.[9]

In this context, battery energy storage technologies (BESS), time-of-use pricing, the free energy market, and intelligent demand management are likely to assume an increasingly important role.

Future regulatory evolution will likely depend on the ability of the Brazilian electricity sector to migrate from a model focused exclusively on generation expansion to one based on flexibility, integration, operational coordination, and systemic efficiency.

7. Conclusion

The current public discussion surrounding the so-called "Eletrolão" (electronics scandal) essentially reveals a structural crisis of transition in the Brazilian electricity sector.

Although there are legitimate reasons for concern related to the expansion of the CDE; the growth of sector charges; compulsory contracting; and tariff pressure.

Simplifying the debate to a purely political-ideological perspective prevents a proper understanding of the systemic complexity involved.

The Brazilian electricity sector currently faces challenges related to the massive integration of renewables; insufficient operational flexibility; uncoordinated expansion; increasing curtailment; and the need for regulatory modernization. More than an isolated tariff crisis, the country is experiencing a structural reconfiguration of the national energy model.

The future of the sector will depend on the institutional and regulatory capacity to balance legal certainty; economic efficiency; affordable tariffs; regulatory predictability; and operational flexibility.

Ultimately, Brazil's energy transition will require not only expanded generation capacity, but above all, systemic intelligence.

References

[1] NATIONAL ELECTRIC ENERGY AGENCY (ANEELInstitutional portal of ANEELBrasilia, DF. Available at: https://www.gov.br/aneel/pt-br?utm_source=chatgpt.com. Accessed on: 17 May 2026.

[2] BRAZIL. Law No. 10.438, of April 26, 2002. Provides for the expansion of the emergency electricity supply, extraordinary tariff readjustment, creates the Energy Development Account (CDE) and provides other measures. Brasília, DF: Presidency of the Republic, 2002. Available at: https://www.planalto.gov.br/ccivil_03/leis/2002/l10438.htm?utm_source=chatgpt.com. Accessed on: 17 May 2026.

[3] MINISTRY OF MINES AND ENERGY (MME). Institutional portal of the Ministry of Mines and Energy. Brasília, DF. Available at: https://www.gov.br/mme/pt-br?utm_source=chatgpt.com. Accessed on: 17 May 2026.

[4] SOLAR CHANNEL. CMSE discusses pricing model and pressure on consumers and businesses. Canal Solar, 2026. Available at: https://canalsolar.com.br/cmse-discute-modelo-precos-pressao-consumidores-empresarios/?utm_source=chatgpt.com. Accessed on: 17 May 2026.

[5] NATIONAL ELECTRIC SYSTEM OPERATOR (ONS). ONS institutional portal. Rio de Janeiro, RJ. Available at: https://www.ons.org.br/?utm_source=chatgpt.com. Accessed on: 17 May 2026.

[6] ELECTRIC ENERGY TRADING CHAMBER (CCEE). CCEE institutional portal. São Paulo, SP. Available at: https://www.ccee.org.br/?utm_source=chatgpt.com. Accessed on: 17 May 2026.

[7] ENERGY RESEARCH COMPANY (EPE). EPE institutional portal. Brasília, DF. Available at: https://www.epe.gov.br/pt?utm_source=chatgpt.com. Accessed on: 17 May 2026.

[8] BRAZIL. Law No. 14.300, of January 6, 2022. Establishes the legal framework for distributed microgeneration and minigeneration, the Electric Energy Compensation System (SCEE) and provides other measures. Brasília, DF: Presidency of the Republic, 2022. Available at:
https://www.planalto.gov.br/ccivil_03/_ato2019-2022/2022/lei/l14300.htm?utm_source=chatgpt.com. Accessed on: 17 May 2026.

[9] NATIONAL ELECTRIC ENERGY AGENCY (ANEELPublic Consultation No. 39/2023: Electrical energy storage, including reversible power plants and battery systems (BESS). Brasília, DF, 2023. Available at: https://www.gov.br/aneel/pt-br/acesso-a-informacao/participacao-social/consultas-publicas/cp-2023/consulta-publica-no-39-2023?utm_source=chatgpt.com
Accessed on: 17 May 2026.

The opinions and information expressed are the sole responsibility of the author and do not necessarily represent the official position of the author. Canal Solar.