| ACCC | Australian Competition and Consumer Commission |
| ACE | Support to the Energy Consumers Office (ERSE internal department) |
| ACER | Agency for the Co-operation of Energy Regulators |
| AdC | Competition Authority (Autoridade da Concorrência) |
| ADR | Alternative Dispute Resolution |
| AEMO | Australian Energy Market Operator |
| AER | Australian Energy Regulator |
| ANACOM | National Authority for Communications (Autoridade Nacional de Comunicações) |
| ANEEL | Brazilian Electricity Regulatory Agency (Agência Nacional de Energia Elétrica) |
| ANMP | National Association of Portuguese Municipalities (Associação Nacional de Municípios Portugueses) |
| ASAE | Economic and Food Safety Authority (Autoridade de Segurança Alimentar e Económica) |
| ASEAN | Association of Southeast Asian Nations |
| AT | Tributary Authority (Autoridade Tributária) |
| CBA | Cost-benefit Analysis |
| CEER | Council of European Energy Regulators |
| CISPN | National Petroleum System Installation Commission (ERSE internal department) |
| CMVM | Portuguese Securities Market Commission (Comissão do Mercado de Valores Mobiliários) |
| CNCS | National Center for Cybersecurity (Centro Nacional de Cibersegurança) |
| CNMC | National Commission for Markets and Competition (Comisión Nacional de los Mercados) |
| CNMV | Spanish Securities Market Commission (Comisión Nacional del Mercado de Valores) |
| CR MIBEL | Board of Regulators of the Iberian Electricity Market |
| CRE | The French Energy Regulator (Commission de Régulation de l’Énergie) |
| CRESAP | Public Administration Recruitment and Selection Committee (Comissão de Recrutamento e Seleção para a Administração Pública) |
| CRU | Commission for Regulation of Utilities |
| DAG | General Administration Division (ERSE internal department) |
| DCE | Energy Consumers Division (ERSE internal department) |
| DCP | Costs and Revenues Division (ERSE internal department) |
| DEA | Data Envelopment Analysis (ERSE internal department) |
| DGC | Directorate-General for Consumer Affairs (Direção-Geral Consumidor) |
| DGEG | Directorate General for Energy and Geology (Direção Geral de Energia e Geologia) |
| DGR | The Directorate-General for Regulation (ERSE internal department) |
| DIR | Infrastructure and Network Division (ERSE internal department) |
| DMC | Markets and Competition Division (previously Markets and Consumers Division, ERSE internal departments) |
| DSJ | Legal Division (ERSE internal department) |
| DSO | Distribution System Operator |
| DTP | Pricing and Tariffs Division (ERSE internal department) |
| EDP | Electricidade de Portugal |
| EISG | Energy Intermarket Surveillance Group (ERSE internal department) |
| ENMC | National Entity for the Fuel Market, National Entity for the Fuel Market (Entidade Nacional para o Mercado de Combustíveis) |
| ENSE | National Entity for the Energy Sector (Entidade Nacional para o Setor Energético) |
| ENTSO-E | European Network of Transmission System Operators for Electricity |
| ENTSOG | European Network of Transmission System Operators for Gas |
| ERSE | Energy Services Regulatory Authority (Entidade Reguladora dos Serviços Energéticos) |
| ESCOSA | Essential Services Commission of South Australia |
| EU | European Union |
| FCA | Financial Conduct Authority |
| FDUNL | Faculty of Law of the New University of Lisbon (Faculdade de Direito da Universidade Nova de Lisboa) |
| GACA | Support to the Board of Directors Office (ERSE internal department) |
| GDPR | General Data Protection Regime |
| GGI | Internal Management Office (ERSE internal department) |
| GRI | Office of International Relations (ERSE internal department) |
| IDEP | Special Projects Development Office (ERSE internal department) |
| IEA | International Energy Agency |
| IESO | Independent Electricity System Operator |
| IMT | Institute for Mobility and Transport (Instituto da Mobilidade e dos Transportes) |
| IST | The Superior Tehcnological Institute (Instituto Superior Técnico) |
| KPIs | Key Performance Indicators |
| LNEG | National Laboratory of Energy and Geology (Laboratório Nacional de Energia e Geologia) |
| LNG | Liquefied Natural Gas |
| MAAC | Ministry of the Environment and Climate (Ministério do Ambiente e da Ação Climática) |
| MIBEL | Iberian Electricity Market |
| NCEP | National Energy Climate Plan |
| NZCC | New Zealand Commerce Commission |
| OECD | Organisation for Economic Co-operation and Development |
| Ofgem | UK’s Office of Gas and Electricity Markets |
| OMIE | Operador del Mercado Ibérico de Energía |
| OMIP | Operador do Mercado Ibérico de Energía Polo Portugues |
| OROC | Portuguese Institute of Statutory Auditors (Ordem dos revisores oficiais de conta) |
| PAFER | Performance Assessment Framework for Economic Regulators |
| PTS | Swedish Post and Telecom Authority |
| PV | Solar Photovoltaics |
| RELOP | Association of Portuguese Speaking Energy Regulatory Entities |
| REMIT | EU Regulation on Wholesale Energy Market Integrity and Transparency |
| REN | Rede Elétrica Nacional |
| SIMER | ERSE Information System for Market Analysis (Sistema de Informação de Mercados) |
| SME | Small and medium-sized enterprises |
| TPES | Total Primary Energy Supply |
| TSO | Transmission System Operator |
| UTAIL | Technical Unit for Legislative Impact Assessment |
Driving Performance at Portugal’s Energy Services Regulatory Authority
