Tunisia relies on gas for over 90% of its power needs. But dwindling domestic output has left it ever more reliant on Algeria. With domestic gas output set to get worse before it gets better the country is looking to the sun to ease its soaring import bill.

Tunisia has awarded the first elements of ambitious plans to develop over 1GW of renewables capacity by 2020.

Renewables provided just 3% of Tunisia’s power output for 2016. The country’s ‘renewables action...