Iran has on Friday warned of a "more crushing" retaliation following the conclusion of last night's sixth consecutive day of US attacks, targeting military targets and logistics infrastructure, but also civilian sites connected to the power grid. By all accounts this current wave goes beyond the prior strikes in size and scope compared to the past several days.Iranian state media has reported that eight people were killed from the overnight attacks, and that several bridges had been attacked overnight.Illustrative wartime image from earlier in the conflict.The country is feeling the strain under what is now nearly a week of constant US heavy attacks. This is being seen in that Iran's energy ministry has urgently called on citizens to reduce electricity use after the power grid came under strain following US strikes on energy infrastructure in the south.In a statement on Friday, the ministry said those areas in the south "are currently experiencing extreme heat and attacks on power infrastructure." But as Al Jazeera notes, "The ministry however did not elaborate on whether it was power plants, transmission lines or other equipment that had been attacked." According to more details:Iran's Energy Ministry urged citizens to reduce electricity consumption to help stabilize power supply in the country’s southern provinces following US strikes on energy facilities, citing extreme heat and infrastructure damage, the semi-official ISNA news agency reported Friday.The ministry asked subscribers to turn off air conditioners for one hour during peak consumption periods to help ensure a more stable electricity supply to the affected provinces, ISNA said.Friday was the first time that Iran's government acknowledged American "attacks on power infrastructure" during the campaign, which comes after Trump's prior warning to go after key civilian infrastructure.And on the bridges: "Iranian media reported that five bridges were hit in the latest round of US strikes, as well as the train station in coastal Bandar Khamir and Iranshahr Airport ​in southeastern Iran," Reuters reports. An airport has also reportedly been attacked.Iran has warned of an "infrastructure for infrastructure" tit-for-tat:Kuwait says that one of the country's power and water desalinations plans suffered "severe damage" after an Iranian attack.