Algeria's gas exports will drop to 26 billion to 30 billion cubic metres per year in 2025 from 45 billion in 2020, energy minister Abdelmadjid Attar told Ennahar TV.
"Exports in the period 2025-2030 will be between 26 to 30 billion cubic metres per year," Attar told Ennahar.
The decline is mainly due to stagnant output, a rise in domestic consumption, and insufficient investment.
Algeria's gas exports peaked in 2005 at 64 billion cubic metres.
It exported 51.4 billion cubic metres in 2018.
Algeria derives 95 per cent of its foreign revenue from oil and gas sales.
Attar has also said that an international tender for exploration will be launched in the beginning of 2021, hoping that it will attract foreign investors.
Algeria has passed an energy law at the end of 2019, but investors are still awaiting publication of the regulations to decide whether to come to Algeria or not.
