Spain suffered several power glitches and industry officials sounded repeated warnings about the instability of its power grid in the build up to its catastrophic blackout on Monday.The government has ordered several investigations into the blackout.

Officials for the Madrid Open cancelled Monday's play amid a blackout in Spain that impacted the tournament's facilities. The blackout caused a number of logistical problems at Caja Mágica with the scoreboards going dark and the loss of lighting to help fans navigate the venue:

By 7 a.m. on Tuesday more than 99% of energy demand in Spain had been restored, the country’s electricity operator Red Eléctrica said. Portuguese grid operator REN said all 89 power substations were back online and power had been restored to all 6.