Data from Spanish grid operator Enagas showed on Wednesday that Russia was the country's second-largest gas supplier last month after Algeria. LNG shipments represented 65.5% of Spain's imports while the rest came through pipelines.

Thanks to the largest stable of import terminals in the European Union, Spain has become the top re-exporter of seaborne Russian supply, which totalled 23% of all Spanish gas imports in January-March.

Spain's natural gas imports fell 23.2% in the month compared with the same month a year earlier, corresponding to 29,129 gigawatt-hours, Enagas said in a statement.

Total gas imports from Algeria accounted for 42%. Spain's storage facilities were 81% full at the end of March.

In March, Spanish Energy Minister Teresa Ribera called for a common approach from the European Commission to ban Russian gas, including the seaborne LNG, as a result of Russia's invasion of Ukraine in 2022, after Lithuania had said the EU should fix into law its plan to quit it by 2027.

Still, Russia's oil and gas revenue, which accounts for around a third of total budget proceeds, jumped 90% last month from March 2023.

(Reporting by Jakub Olesiuk; editing by Pietro Lombardi and Leslie Adler)