Millions remained without power in Cuba for a third consecutive day as slow progress is made in restoring electricity following multiple major grid failures.

Power is expected to be restored to everyone on the island by Tuesday, the minister of energy and mines, Vicente de la O Levi, told reporters at a news conference Sunday. The announcement, however, came before the Energy and Mines Ministry reported a fourth grid failure.

Levi warned that even with the power restored, “we will continue to have blackouts because we continue with the lack of fuel.” He said the government is “in conversations” to acquire fuel.