immediately, hornsea offshore wind farm immediately, hornsea offshore wind fa rm lost immediately, hornseae time, a gas power station in bedfordshire also tripped with two large generators failing. there wasn't enough reserve power to instantly bridge the gap. so the emergency system kicked in to prevent a wider shutdown, 5% of the countries electricity demand was taken out. it meanti.i electricity demand was taken out. it meant 1.1 million customers lost power. shortly after 5pm, the system stabilised. it could have been a lot worse, the system worked to prevent a cascade failure and we still have a cascade failure and we still have a system operating now. i would say it worked intended. did it? why was there so much disruption, especially on the railways? there were some minor signalling problems but the keyissue minor signalling problems but the key issue was 60 new thameslink trains. an internal safety mechanism is triggered on the ground to a halt. around half of them needed engineers to get them restarted, causing widespread chaos and delays. so, should the national grid be more resi

almost simultaneously the hornsea offshore wind farm in the north sea disconnected from the grid. loss was so large that back—up systems kicked in, meaning some demand across the country had to be cut. it affected almost a million customers across england and wales. the national grid says it is working with generators to find out way and admitted many questions need to be answered. we need to do a detailed technical examination of the event and we will send that report through to ofgem and build that analysis in the coming days and weeks as we review it. then from that i'm sure we will learn lessons and want to review how this worked to avoid some of those significant impacts in future. the consequences were widespread — some traffic lights went out, newcastle airport experienced power issues, and at ipswich hospital the back—up generator failed. even when power was restored, many great northern trains remain stuck because the drivers could not restart them and had to wait for specialist engineers. the national grid has ruled out a cyber attack for the failure, but if the regulato

two minutes later, the hornsea offshore wind farm also disconnected from the grid.till problems on the trains hours after power was restored to the million or so homes that lost their electricity. it was about a 5% loss of power over about 90 minutes. that's what happened. so why that led to the heart of the national transport infrastructure being closed down is a big question that the grid have to address. the regulator, 0fgem, has asked for an urgent report about what went wrong, and enforcement action, including fines, could follow. andy is outside king's cross station, which saw some of the worst disruption for passengers yesterday. andy, are things back to normal there? the situation today is much better. the situation today is much better. the lines are up and running again, the power has been restored. all those trains that were stuck on the lines have been removed. but there are still ongoing knock—on problems, and the trade companies that operate, especially out of king's cross and st pancras here, about five train companies, a warning that there will be pr

immediately, hornsea offshore wind farm lost power. it shouldn't happen with lightning.nerators failing. there wasn't enough reserve power to instantly bridge the gap. so the emergency system kicked in to prevent a wider shutdown. 5% of the country's electricity demand was taken out. it meant 1.1 million customers lost power. shortly after 5pm, the system stabilised. it could have been a lot worse. the system worked to prevent a cascade failure and we still have an electricity system that's operating now. i would say the system worked as intended. but did it? why was there so much disruption, especially on the railways? there were some minor signalling problems, but the key issue was 60 new govia thameslink trains. they weren't disconnected in the shutdown, but an internal safety mechanism was triggered and they ground to a halt. around half of them needed engineers to get them restarted, causing widespread chaos and delays. bye, train. so, should the national grid be more resilient? this company and its batteries helped to restore the power supply. it's on standby to de

lightning affected the hornsea offshore wind farm of yorkshire which lost power unexpectedly disconnectedh a lightning strike. it is pretty routine. almost simultaneously a gas plant in bedfordshire also tripped. the grid has enough fast reserved back—up power to cope with the loss of the single biggest generator part two happened that once so it was not enough and that triggered an automatic protection system which took out 5% of the supply to rebalance the system and are a total shutdown, and that affected i.i million customers. great says this isa million customers. great says this is a rare and unexpected event. i did not last long but it had a big impact. what about compensation? it is early days but the regulator is investigating. they are trying to learn lessons. one key thing is they are looking at the amount of back—up power held by the national grid because that raises questions about resilience. they are also looking at whether any of the parties involved in this, companies that run the wind farm, the power station, the distributors of the electricity, and the national grid, wh

immediately, hornsea offshore wind farm lost power. it shouldn't happen with lightning.wo large generators failing. there wasn't enough reserve power to instantly bridge the gap so the emergency system kicked in to prevent a wider shutdown. 5% of the country's electricity demand was taken out. it meant 1.1 million customers lost power. shortly after 5pm, the system stabilised. it could have been a lot worse. the system did work to prevent a cascade failure and we still have an electricity system that's operating now. so i would say the system worked as it intended. but did it? why was there so much disruption, especially on the railways? there were some minor signalling problems, but the key issue was 60 new govia thameslink trains. they weren't disconnected in the shutdown, but an internal safety mechanism was triggered and they ground to a halt. around half of them needed engineers to get them restarted, causing widespread chaos and delays. bye, train. so, should the national grid be more resilient? this company and its batteries helped to restore the power supply. it'

meanwhile, the owners of hornsea one wind farm said it was investigation the cause of the loss of powern passengers were stranded across the network and particularly at king‘s cross station — with many not getting home until the early hours. andy moore reports. darkness at clapham station. the lights went out, the display boards died, even the ticket machines were completely dead. after four hours on a train outside saint pancras, this passenger was glad to see help arrived. the people on board were offloaded and escorted to a nearby station where water bottles were waiting. others weren‘t so lucky. this was the message for travellers stuck on a train that finally got into king‘s cross just before two o‘clock in the morning. they tried to provide taxis but the wait was about a0 minutes. which meant i wouldn‘t have got home until even later, so i would have had to pay out of pocket again for an uber, which cost me £40. national grid has given little details about what caused the power cuts, but industry experts say that at 16:58pm the gas—fired plant at little barford failed. two minutes

immediately, hornsea offshore wind farm lost power. it shouldn‘t happen with lightning. it meant 1.1 million customers lost power. shortly after 5pm, the system stabilised. why was there so much disruption, especially on the railways? some of the chains needed engineers to start them again causing widespread chaos and delays. so, should the national grid be more resilient? this company and its batteries help to restore the power supply. it‘s on standby to deliver instant electricity when needed. that‘s something the energy regulator will also be looking at is part of its investigation. it could fine the national grid or any of the other electricity companies involved if they are found to be at fault. emma simpson, bbc news. most research says that people without kids are often happier than those with children — that‘s usually because they have less free time, sleep and money. but a new study suggests that parents are actually happier then non—parents — but only when their children move out. yes, up until now most surveys of parental happiness have focused on those whose

one at hornsea and the other at little ba rford.ity of strathclyde, and a co—director of the uk energy research centre. thank you for being with us. what do you think we have learned in this interim report about why the system could not cope? what we have learned, i think, could not cope? what we have learned, ithink, is could not cope? what we have learned, i think, is that they was a lightning strike that was involved with this incident. according to a national grid, they were a number of lightning strikes in the system which caused faults around that afternoon, but there was one in particular that was connection to the turbine, which is one of the generators that came off—line. because lightning strikes have been tens of times a year causing network faults, they should not cause any further problems, so one of the issues here was exactly why it seemed to prompt the loss of a significant amount of power from the offshore wind farm and the combined cycle gas turbine within a very short space of time. there is that old saying, light