Publications

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2015
Nijs, W, Simoes S, Sgobbi A, Ruiz-Castello P, Thiel C, Giannakidis G, Mantzaris J, Tigas K, Dimitroulas D, Georgilakis P, Vournas C.  2015.  Improved Representation of the European Power Grid in Long Term Energy System Models: Case Study of JRC-EU-TIMES. Informing Energy and Climate Policies Using Energy Systems Models. 30(George Giannakidis, Labriet, Maryse, Brian ÓGallachóir, GianCarlo Tosato, Eds.).:201-222.: Springer International Publishing Abstract
n/a
2014
Gouveia, JP, Dias L, Martins I, Seixas J.  2014.  Effects of renewables penetration on the security of Portuguese electricity supply. Applied Energy. 123:438–447. AbstractWebsite

The increase of renewables in power sector, together with the increase of their electricity share in final energy consumption, is changing our perception about energy security with diverse and contradictory statements. The Portuguese security of electricity supply is analyzed in this study by comparing selected indicators for 2. years before and after the high increase of onshore wind since 2005. Our goal is to find how the security of electricity supply was impacted by the penetration of renewables, taking a supply chain approach. Our analysis highlights that the penetration of renewables has decreased the energy dependence of the power sector by more than 20% between 2004 and 2011, while risks related to the concentration of natural gas suppliers and to the still-high share of fossil fuels suffering from price volatility are discussed. We observed a significant improvement in power interconnections with Spain, as well as an increase of the de-rated generation capacity margin, allowing proper management of renewable power intermittency if necessary, thereby improving power security. Although the share of intermittent renewables almost quadrupled in total installed capacity between those years, the indicators reveal an improvement in the quality of transport and distribution when delivering electricity to end-users. Although electricity prices increased, mainly due to taxes, the lack of energy efficiency is an aspect deserving improvement to alleviate the pressure on electricity security, mainly at high peak demands.

Gouveia, JP, Bilo N, Gargiulo M, Giannakidis G, Gregório V, Duncan I, Nunes V, Robinson D, Seixas J, Valentim A.  2014.  InSMART - Integrative Smart City Planning - The case of Households in Évora. Urban Futures Squaring Circles: Proceedings, International Conference on Urban Futures Squaring Circles 2050,. , Calouste Gulbenkian Foundation: Institute of Social Sciences of the University of Lisbon and Calouste Gulbenkian Foundation Abstract

European policy has acknowledged the significance of local and regional communities for the
deployment of new low carbon technologies and their potential for sustainable energy production and use.
Several initiatives and programmes (e.g. Covenant of Mayors) have been set up to engage European cities in the
effort towards a low carbon future. At the same time, there is a critical need to improve comprehensive city
planning driven by an integrated approach and focused on cost benefit assessment towards sustainable energy
use. Hence, innovative tools and models to assess and perform in-depth analysis of the alternative measures
towards efficient energy use, will help pave the way to fully capture the potential of each city in the most
efficient (economically, socially and technically) way.
The InSMART concept brings together four European cities: Évora (Portugal), Cesena (Italy), Nottingham (UK)
and Trikala (Greece), and scientific organizations of these countries, to establish a methodology for enhancing
sustainable planning for city needs through an integrative and multidisciplinary planning approach, aiming to
developing detailed sustainable energy action plans. Such an approach will identify the optimum mix of short,
medium and long term projects and investments, addressing the efficiency of energy flows across various city
sectors with regards to economic, environmental and social criteria and will highlight priority actions.
Tools and models, like Geographic Information System, buildings models (CitySim and EnergyPlus) and
transport-based energy and carbon model, as well as a technological partial equilibrium energy model (TIMES),
are used to analyse, all the relevant sectors (buildings, industries, transports, waste and water management).
Furthermore, the cities buildings stocks are being characterized through an extensive 110-question survey
(around 410 door-to-door interviews) and will be modelled through a typology approach. Four hundred 20-
question surveys are also being carried out to evaluate transport and mobility patterns, supported on travel diaries and fulfilling different quotas for several variables (geographic location, days of the week, age and working
status) in order to assure representativeness of the data collected.
The main differences between rural and urban areas results from the building surveys and high-resolution
electricity consumption from smart meters for the Portuguese city of Évora are highlighted.

2013
Seixas, J, Fortes P, Dias L.  2013.   Renewable power cost supply curves (AIC) TIMES_PT: Portugal, 17 June. IRENA-ETSAP joint Session. , Paris, France
Seixas, J, Fortes P, Dias L.  2013.  Renewable Power Cost Supply Curves - TIMES_PT: Portugal, 17 June. IRENA-ETSAP Joint Session. , Paris, France: International Renewable Energy Agency – The Technology Systems Analysis Program
2012
Fortes, P, Seixas J, Dias L, Gouveia JP.  2012.  Low Carbon Roadmap for Portugal: Technology Analysis, 9-12 September. 2th IAEE European Conference, Energy challenge and environmental sustainability. , Venice, Italy: International Association of Energy Economics
Dias, L, Fortes P, Gouveia J, Seixas J.  2012.   Potencial de Eficiência Energética em Portugal para cenários de Longo Prazo, 22 June. PCEEE – Portugal em Conferência para uma Ecónomia Energéticamente Eficiente. , Coimbra, Portugal: Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Gouveia, JP, Dias L, Fortes P, Seixas J.  2012.  TIMES_PT: Integrated Energy System Modeling. 1st Int'l Workshop on Information Technology for Energy Applications (IT4ENERGY'2012). , Lisbon, Portugal: Vol. 923 of CEUR Workshop Proceedings, ISSN 1613-0073
2011
Simões, S, Seixas J, Fortes P, Dias L, Gouveia JP, Mauricio B.  2011.  The medium-term role of renewable energy sources in climate change mitigation in Portugal, 9-13 May. WREC 2011 - World Renewable Energy Congress 2011. , Linkoping, Sweded
Seixas, J, Simões S, Kanudia A, Gargiulo M, Dias L, Gouveia JP, Fortes P.  2011.  Electric Vehicles in the European Union: Conditions for Success, Impacts on the Power System and on CO2 Emissions, 6-8 July. IEW - International Energy Workshop 2011,. , Standford, USA.
Seixas, J, Fortes P, Simões S, Dias L, Gouveia JP, Mauricio B.  2011.  Greenhouse gas emissions cap: a new paradigm for energy dependence in the long term?, 19-23 June 34th IAEE International Conference - Institutions, Efficiency and Evolving Energy Technologies.. , Stockholm
2010
Dias, L, Gouveia J, Maurício B, Fortes P, Seixas J.  2010.  The impact of Climate Change Mitigation Options on Air Pollutant Emissions in Portugal, 24 June. Semiannual ETSAP Meeting 2010. , Stockholm, Sweden: KTH Royal Institute of Technology
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