Cookies
O website necessita de alguns cookies e outros recursos semelhantes para funcionar. Caso o permita, o INESC TEC irá utilizar cookies para recolher dados sobre as suas visitas, contribuindo, assim, para estatísticas agregadas que permitem melhorar o nosso serviço. Ver mais
Aceitar Rejeitar
  • Menu
Sobre

Sobre

Nascido em 1967 em Madrid, José Villar é investigador sénior do Centro de Sistemas de Energia do INESC TEC desde 2017, sendo atualmente responsável pela área de Mercados de Eletricidade que se dedica à modelação e regulação dos mercados de eletricidade num contexto de descarbonização e descentralização do sistema energético. Doutorado pela "Escuela Técnica Superior de Ingenieria-ICAI" da "Universidad Pontificia Comillas" (Madrid) em 1997, foi membro do "Instituto de Investigación Tecnológica -IIT" da mesma universidade e subdiretor de 2004 a 2016, e Professor Associado até 2017 na mesma universidade. Participou em mais de 80 projectos de investigação com a indústria e as administrações, e foi co-autor de mais de 140 artigos de investigação em revistas e conferências internacionais. As suas áreas de interesse centram-se na modelização e regulação dos mercados de electricidade, na integração de fontes de energia renováveis e na descentralização do sistema energético.

Tópicos
de interesse
Detalhes

Detalhes

  • Nome

    José Villar
  • Cargo

    Responsável de Área
  • Desde

    01 setembro 2016
026
Publicações

2023

Pricing and Simulating Energy Transactions in Energy Communities

Autores
Mello, J; de Lorenzo, C; Campos, FA; Villar, J;

Publicação
ENERGIES

Abstract
Extensive literature is available for modeling and simulating local electricity markets, often called P2P electricity markets, and for pricing local energy transactions in energy communities. Market models and pricing mechanisms provide simulation tools to better understand how these new markets behave, helping to design their main rules for real applications, and assessing the financial compensations of the internal energy transactions. As such, pricing mechanisms are often needed in energy management systems when centralized management approaches are preferred to market-based ones. First, this paper highlights the links between local electricity markets, pricing mechanisms for local electricity transactions, and other approaches to sharing the collective benefits of participating in transactive energy communities. Then, a standard nomenclature is defined to review some of the main pricing mechanisms for local energy transactions, an innovative pricing mechanism based on the economic principles of a post-delivery pool market is proposed, and other relevant approaches for local electricity market simulation such as Nash equilibrium or agent-based simulation are also revisited. The revision was based on systematic searches in common research databases and on the authors' experience in European and national projects, including local industrial applications for the past five years. A qualitative assessment of the reviewed methods is also provided, and the research challenges are highlighted. This review is intended to serve as a practical guide to pricing mechanisms and market simulation procedures for practical designs of internal financial compensation to share the collective benefits of energy communities.

2023

5. Coordenação com o sistema energético

Autores
Villar, J; Mello, J; Lopes, JP;

Publicação
Comunidades de Energia Renovável

Abstract

2023

A Three-Stage Model to Manage Energy Communities, Share Benefits and Provide Local Grid Services

Autores
Rocha, R; Silva, R; Mello, J; Faria, S; Retorta, F; Gouveia, C; Villar, J;

Publicação
ENERGIES

Abstract
This paper proposes a three-stage model for managing energy communities for local energy sharing and providing grid flexibility services to tackle local distribution grid constraints. The first stage addresses the minimization of each prosumer's individual energy bill by optimizing the schedules of their flexible resources. The second stage optimizes the energy bill of the whole energy community by sharing the prosumers' energy surplus internally and re-dispatching their batteries, while guaranteeing that each prosumer's new energy bill is always be equal to or less than the bill that results for this prosumer from stage one. This collective optimization is designed to ensure an additional collective benefit, without loss for any community member. The third stage, which can be performed by the distribution system operator (DSO), aims to solve the local grid constraints by re-dispatching the flexible resources and, if still necessary, by curtailing local generation or consumption. Stage three minimizes the impact on the schedule obtained at previous stages by minimizing the loss of profit or utility for all prosumers, which are furthermore financially compensated accordingly. This paper describes how the settlement should be performed, including the allocation coefficients to be sent to the DSO to determine the self-consumed and supplied energies of each peer. Finally, some case studies allow an assessment of the performance of the proposed methodology. Results show, among other things, the potential benefits of allowing the allocation coefficients to take negative values to increase the retail market competition; the importance of stage one or, alternatively, the need for a fair internal price to avoid unfair collective benefit sharing among the community members; or how stage three can effectively contribute to grid constraint solving, profiting first from the existing flexible resources.

2023

Integrating flexibility and energy local markets with wholesale balancing responsibilities in the context of renewable energy communities

Autores
Mello, J; Villar, J;

Publicação
ENERGY

Abstract
Prosumers can organize themselves in collective self-consumption (CSC) structures and renewable energy communities (RECs) to share energy they produce locally. In addition, through their contracted balancing responsible party (BRP), i.e., retailer and aggregator, they could become flexibility providers for system services to solve, for example, local grid constraints. Since CSC and REC structures are progressively being regulated in many countries, local energy markets (LEMs) and local flexibility markets (LFMs) to be developed with these structures should find the way to comply with existing CSC rules to settle energy transactions and flexibility activation, both, locally and with the wholesale markets (WSMs) settlement, and the existing barriers and regulatory improvements should be identified to allow future implementations. Indeed, the integration of local and WSMs is still a matter of development, demanding innovative solutions, one of the main issues being, for example, the impact of the flexibility activation by one BRP into another BRP's expected delivery commitment in the WSM. This work proposes innovative designs for LEM and LFM based on common CSC rules of existing regulations, and a conceptual approach to integrate them together and with the WSM balancing responsibilities of the BRPs involved, identifying existing regulatory barriers. While many LEMs in the literature operate as WSMs, with future markets and delivery commitments for prosumers, we propose the use of a post-delivery LEM that can be cleared even after the delivery of energy, which strongly simplifies prosumers participation avoiding the need of these a priori unrealistic commitments. The business model, the main roles involved, and the contractual framework to connect the BRPs while allowing prosumers to freely contract the BRP of their choice for both energy supply and flexibility provision are described and can serve as a guide for future regulatory improvement of the common regulatory frameworks.

2023

A framework for circular energy communities in the agricultural sector with a cogeneration case study

Autores
Guimaraes, P; Moreno, A; Mello, J; Villar, J;

Publicação
2023 19TH INTERNATIONAL CONFERENCE ON THE EUROPEAN ENERGY MARKET, EEM

Abstract
This work exploits the nexus of agricultural activities, water, and electrical and thermal energies to propose a framework to develop efficient circular renewable energy communities for the agricultural sector, by analyzing and optimizing the resources and the energy flows among them, profiting from the energy sources available. In this framework, local industries and agricultural facilities can invest in solar PV plants, livestock residues digestors to produce biogas, and cogeneration plants to supply the thermal and electrical energy needs. A simplified case study is presented, based on using biomass residues from livestock processed in an anaerobic digestor to produce biogas for a cogeneration plant. Their optimal capacities are computed considering the optimal supply of thermal and electrical energy needs and the supply from the public electricity and gas grids.

Teses
supervisionadas

2023

CONDUC¸A~O EM TEMPO-REAL DE ALGORITMOS MUSICAIS: IMPLEMENTAC¸A~O DE UM SISTEMA MUSICAL INTERATIVO COM O KIN.RHYTHMICATOR

Autor
Diogo Miguel Filipe Cocharro

Instituição
UP-FEUP

2023

Drivers and barriers for implementing the digital transformation in the Portuguese industry

Autor
Diana Raquel Moreira Cardoso

Instituição
UP-FEUP

2023

Otimização de sistemas de autoconsumo baseados no potencial eólico para edifícios de elevada altura

Autor
Carlos José Seabra Costa Oliveira

Instituição
UTAD

2023

Estudo da viabilidade económica da integração de aerogeradores de baixa potência em pequenos edifícios industriais.

Autor
Tiago Afonso da Cruz Barbosa

Instituição
UTAD

2023

Bringing Post-Quantum Cryptography to Practice

Autor
Luís Alberto Oliveira Rocha Esquível Costa

Instituição
UM