According to aenert.com: "There are no significant deposits of natural gas or oil in Portugal. All oil and natural gas in Portugal comes from other countries, making Portugal highly dependent on fossil fuel imports. Although the country has small coal deposits, the last coal mine was closed almost 30 years ago."
"Portugal remains highly dependent on fossil fuels for its overall energy needs," says enerdata.net. "... while a European leader in renewable electricity (often 70%+), it is still moderately to highly dependent on imported fossil fuels for its broader energy system - primarily due to oil's role in *transport*"
What are Portugal's fossil fuel reserves thought to be in days?