Supervisory Activities
ERSE carries out surveillance and inspection activities on companies subject to its regulation and oversight - namely network operators and other regulated infrastructures and energy suppliers - as regards matters falling within its powers.
These actions may be triggered, regardless of prior appointment, for the purpose of investigating complaints that have been brought to the attention of this Authority.
Checks and inspections are a way of monitoring the practices followed by regulated operators, allowing ERSE to fulfil, among others, the following objectives:
- To ensure compliance with the legal and regulatory provisions applicable to its regulated operators
- To ensure compliance with ERSE’s instructions and decisions
- To better support the consolidation of regulated tariffs’ allowed revenues
- To check compliance, on the part of agents in regulated sectors, with public service obligations
- To monitor fulfilment of quality of service standards
- To act following consumer complaints
The monitoring of compliance with rules subject to ERSE’s surveillance is carried out by ERSE’s own means or by duly accredited qualified entities with high levels of quality and independence criteria, and comprises activities carried out on site or off site. ERSE collects data and other elements from operators; it promotes visits to sites; carries out technical tests; programmed or extraordinary audits and inspections, many of which support the definition of allowed revenues through the application of regulated tariffs. Some of the inspections conducted involve sensitive and confidential information.
2025
Sector | Type | Object | Company |
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Inspection |
Mistery client action to test the scenario of technical assistance following the use of telephone support to report faults |
Distribution System Operators |
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Audit |
Verification of regulatory dispositions under the Quality of Service Regulation |
E-Redes - Distribuição de Eletricidade, S.A. |
2024
Sector | Type | Object | Company |
|
Audit |
Analysis of Turbogás' expenses in view of the extension of its operation under the PPA. Audit undertaken in collaboration with ENSE |
Turbogás, S.A. |
|
Audit |
Follow-up of recommendations resulting from the audit of the application of the incentive for the economic rationalization of investments (IREI) |
REN |
|
Audit | Procedures for recognizing/capitalizing the costs of structural, management and financial charges in the costs of Assets | E-Redes |
|
Audit |
Procedures for recognizing/capitalizing the costs of structural, management and financial charges in the costs of Assets |
REN |
|
Audit |
Analysis of the company's operation and organization |
Enondas, Energia das Ondas, S.A. |
|
Inspeçtion |
Mistery client action in the telephone service of suppliers to assess the commercial quality of the service provided to customers. Tested the scenario of switching electricity supplier through telephone service |
Suppliers |
|
Audit |
Analysis of the OLMCA activity |
ADENE - Agência para a Energia, enquanto Operador Logístico de Mudança de Comercializador e Agregador |
|
Audit | Evolution of costs for REN Trading's representation in arbitration panels provided for in the PPA | REN Trading, S.A. |
|
Inspection |
In-person service (quality of service, complaints book) |
Endesa |
|
Audit | Continuity of Supply | |
|
Inspeçtion |
Mistery client action to 3 lines of telephone service of suppliers to assess the commercial quality of the service provided to customers. Tested the scenario of switching electricity supplier through telephone service |
Suppliers |
|
Inspeçtion |
Mistery client action to 9 distribution system operators to assess the commercial quality of the service provided to customers. Tested the combined visit scenario as part of technical assistance to a gas installation |
Distribution System Operators |
|
Inspection |
In-person service (quality of service, complaints book) |
Goldenergy |
|
Audit |
Assessment of Wholesale Supplier of Last Resort operation costs |
Transgás |
|
Inspection | Inspection of compliance with the Energy Consumption Efficiency Promotion Plan Regulation | APED - Portuguese Association of Distribution Companies |
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Inspection | Inspection action on compliance with the obligations set out in the Smart Grid Services Code for installations integrated in 2022 | E-Redes - Distribuição de Eletricidade, S.A. |
2023
Sector | Type | Object | Company |
|
Inspection | Inspection action on domestic invoices from electricity suppliers | Market suppliers |
|
Inspeçtion |
Mistery client action to sixteen in-person stores and four telephone service of eletricity and natural gas suppliers to assess the commercial quality of the service provided to customers. Two scenarios were tested: filing a complaint by telephone and requesting a written response and request of a contract proposal. |
Suppliers |
|
Fiscalization |
In-person service (quality of service, complaints book) |
EDP Comercial |
|
Fiscalization |
In-person service (quality of service, complaints book) |
Petrogal (Galp) |
|
Audit | Continuity of Supply | E-Redes - Distribuição de Eletricidade, S.A. |
|
Audit | Continuity of Supply | EDA - Electricidade dos Açores, S.A. |
|
Inspection |
Conclusions and recommendations follow up - Low voltage assets audit |
E-Redes - Distribuição de Eletricidade, S.A. |
C |
Inspection |
Conclusions and recommendations follow up - Intragroup operations of Galp/Floene group audit |
GALP/Floene |
|
Inspection |
Reporting of investments in distribution |
REN Portgás Distribuição, S.A. |
|
Inspection |
Conclusions and recommendations follow up - Investments in information systems and costs arising from the new activities undertaken by SU Eletricidade audit |
S.U. Eletricidade, S.A. |
|
Audit |
Assessment and critical evaluation of OPEX and CAPEX allocation by voltage levels rules (HV/MV and LV) |
E-Redes - Distribuição de Eletricidade, S.A. |
|
Inspection |
Intra-group operations of the EDA Group, nature of maintenance operating costs of production equipment and operations with the company Graciólica |
EDA,S.A. |