Melbourne hospitals, including The Alfred, have enacted a 'Code Yellow' and switched off non-essential lights and equipment to conserve energy amid Friday's searing heat.



The Health Department told Melbourne hospitals to prepare their emergency plans in the case of power outages.



The Alfred Hospital is confirmed that it was reducing the non-essential power on Friday.

"The department yesterday wrote to all hospitals advising them to prepare for the impact of extreme heat," a spokesperson said on Friday.

"This includes preparing for increased patient demand and possible energy disruptions."