It is essential to be aware of the Portuguese energy sector in order to understand the challenges of energy optimisation in the buildings. It is important to highlight that buildings alone account for 1/3 of final energy consumption in Portugal.
Energy dependency of Portugal
The Portuguese energy sector is highly dependent, importing almost all of its primary energy needs. In 2016, this value reach the 74.8%. This dependence has decreased slightly compared to 2015 due to an increase in electricity production from renewable sources.
Distribution of primary energy imports in 2016.
Share of final energy consumption (datas from 2015)
12% service buildings
18% residential buildings
Share of renewable energies (2016)
Wind power 23,1%
Geothermal energy 0,3%
The energy sector in Portugal is defined by a high share of renewable energies. Indeed, in terms of electricity production, the share of renewable energies in 2016 was around 62%.
However, this share decreased in 2017 (45.5%) due to the drought in Portugal that year, which led to a decrease in hydroelectric power generation.