LISBON, April 28 (Reuters) - Portugal's electricity

distributor REN said on Monday it had restored

production at both a hydroelectric and thermoelectric plant amid

operations to revive the national grid after a widespread

outage.

It added that such operations were "particularly complex

compared to Spain" because Portugal was relying solely on its

national resources instead of contributions from France and

Morocco.

REN said it was prioritising restoring supply to priority

consumption points such as hospitals, security forces, airports,

railways and roads.