Repositório do LNEG
Repositório Científico do Laboratório Nacional de Energia e Geologia
Entradas recentes
Annual Report 2024: Portugal
Publication . Couto, António; Costa, Paula Silva; Simões, Teresa; Estanqueiro, Ana
ABSTRACT: In 2024, the new wind power capacity installed amounted to 64 MW. This capacity results from overcapacity procedures and expansions at existing sites, with only one new wind park being installed. A new version of the NECP 2030 was released, with wind power continuing to play an important role in decarbonization of the power system, setting targets of 10.4 GW for onshore wind and 2.0 GW for offshore wind. For the offshore case, these values align with the work achieved by the ministerial working group created by the Portuguese government to accelerate the offshore wind market. The objective of this group is to establish the necessary conditions for the allocation and installation of 2 GW by 2030 through capacity auctions. The main R&D work in 2024 was focused on training activities in wind energy digitalisation (project TWEED) and create intelligent systems supporting autonomous wind power plant operations (project INTELLIWIND) as well as in developing new larger segmented wind blades to improve performance and environmental sustainability of the materials (project RiSEnergy).
A Infraestrutura INIESC no Contexto da EU-SOLARIS: Actividades e Perspectivas Futuras
Publication . Horta, Pedro; Canavarro, Diogo; Cardoso, João; Azevedo, Pedro; Martinez, Diego
Estimativa do Potencial Técnico da Energia Solar Térmica no Setor dos Edifícios e na Indústria em Portugal
Publication . Cardoso, João; Facão, Jorge
Exploring the offshore wind and wave generation complementarity in Portugal for a sustainable and resilient power system
Publication . Couto, António; Justino, Paulo Alexandre; Costa, Paula Silva; Simões, Teresa; Estanqueiro, Ana
ABSTRACT: Exploring variable energy sources generation complementarity can, among several benefits, help in the reduction of the negative impacts of variability from individual sources, and lower the system’s flexibility requirements. This study focuses on the complementarity between offshore wind and wave energy aiming to identify its overall value to the power system. Using Portugal as a case study, this work examines two offshore regions of the Plan for the Allocation of Offshore Renewable Energy in Portugal using standard approaches to assess the level of complementarity. The findings show a clear seasonal mismatch in the summer between wind and wave energy, which supports their complementary nature and helps smooth out seasonal fluctuations in offshore renewable generation. The results indicate that wave energy brings value to diversifying the offshore energy mix. When compared with onshore renewable generation, the combined use of offshore wind and wave power significantly enhances the stability of energy supply, reduces extreme events, which can contribute to decrease the need for additional system flexibility in future nearly 100% renewable-based power systems.
Pre-Mesoproterozoic crustal architecture and implications for the Mesoproterozoic evolution of the SW Angolan Shield from structural, geochemical, and isotopic evidence [Resumo]
Publication . Merino-Martínez, E.; Ferreira, Ezequiel; Valverde-Vaquero, Pablo; Rodrigues, José Feliciano; Escuder-Viruete, Javier; Garcia-Lobon, Jose Luis; Beranoaguirre, Aratz; Feria, María Carmen; Rey-Moral, Carmen; Silva, Paulo Bravo; González-Cuadra, Pablo; Sousa, João Carlo; Potti, Julián; Máximo, J.; Gutiérrez-Medina, M.; Gumiel, J.C.; Galán, Gustavo; Mochales, Tania; Manuel, José; Manuel, José; Tassinari, Colombo C. G.; Montero, P.; Sato, Kei; Fuenlabrada, José Manuel; Galindo, Carmen
ABSTRACT: Several studies suggest the existence of multiple tectonic domains within the Angolan Shield [1], yet the Archaean to Palaeoproterozoic basement of SW Angola and NW Namibia remains largely unexplored. Similarly, distinct Mesoproterozoic (1534–1065 Ma) igneous suites are documented in the SW Angolan Shield, including the largest known gabbro-anorthosite complex (~42,500 km²), the Kunene Complex (KC), but the geological evolution of the region during the Mesoproterozoic is still debated. Traditionally linked to anorogenic contexts [2], recent studies propose a collisional setting for the KC [3]. A combined isotopic (U-Pb, Sr-Nd), gravimetric, and structural approach allows for a refined crustal framework of the SW Angolan Shield and provides new insights into the emplacement of the KC and the regional evolution of the southern Congo Craton. This integrated dataset delineates several Archaean to Palaeoproterozoic domains surrounding the KC, featured by a specific gravimetric response and geochronological time span: Cassinga Zone (2667–2568 Ma and 1982–1971 Ma), Central Eburnean Zone (2038–1947 Ma; intruded by 1844–1744 Ma magmatism in its southern region, the Lubango Area), Namibe and Epupa Zones (1861–1739 Ma), and the Kalahari Area (~1775 Ma?). These contrasting crustal domains significantly influenced the genesis and emplacement of the KC.