150 homes in part of Kent are currently without power after a fault on an underground electricity cable.
UK Power Networks say engineers are working hard to fix it as quickly as possible.
Areas with ME3 and ME8 are affected.
The power is expected to be restored within the next hour.
Thousands of homes and businesses in the centre of Winchester are without power this afternoon.
A major power cut in the city centre meant many shops and restaurants having to close.
Heavy thunderstorms brought our extended summer to a dramatic end overnight - in a twist to what has been the hottest September in 100 years.
Dorset and the New Forest were among the hardest hit last night - homes struck by lightning, schools closed and roads flooded, and thousands of homes left without power. The storm arrived in Dorset at 1am and slowly made its way east. At it's peak, more than an inch of rain fell in Swanage in just one hour, overwhelming drains and flooding homes.
In Christchurch, a house caught fire when it was struck by lightning, causing the roof to collapse. Rachel Hepworth reports on today's clean-up after the storm.
There are reports of power cuts in the OX28 area of Witney and West Oxfordshire this morning. 116 different postcodes area have been affected.
A team of 150 workers is to carry out Southern Electric's biggest ever tree cutting programme - in a bid to reduce the number of power cuts in West Sussex.
Fallen trees hitting power lines or interfering with the network have caused nine power outages in the past year alone. The firm is spending £350,000 on the one-day operation which will see tree cutters, engineers and contractors working in Milland, Redford and Linch. Power will be turned off between 8am - 6pm in the areas with electricity being provided through temporary power generators where possible.
The entire project will cover an area of 200,000 sq. metres. The firm has reassured the public that only vegetation and dead trees will be removed if they pose a significant threat to the network and are within falling distance of an overhead line.
The company is setting up a mobile welfare and information point to provide free hot food and drinks, as well as charging facilities for customers' mobile phones and tablets.
Hundreds of homes across the South are still without power following last night's storms. Southern Electric Power Distribution engineers have been working late into the night and since the early hours to repair damage to the electricity network.
The stronger than predicted winds yesterday affected the power to around 10,000 properties. Engineers made significant progress yesterday and there are now around 2,800 customers currently affected. Work is continuing today and engineers are aiming to restore the remaining supplies this afternoon.
The breakdown of customers still without supply are as follows: Aldershot 248 Basingstoke 684 Petersfield 1072 Reading 720 New Forest 100 Oxford 75 Slough 27
Extra engineers and support staff have been mobilised in order to be able to repair any damage as quickly as possible and welfare vans have been sent out to the Petersfield area. We have also increased call handlers in our emergency centre in Portsmouth.
Safety around the electricity network is crucial at this time and anyone who finds any damage to the network should remain at a safe distance and call our emergency number on 0800 072 7282.
Bosses of the big six energy companies are to be questioned by MPs about power cuts over Christmas.
The storms over the festive period which hit the south, left some without electricity more than once.
People in Dorset had to leave their homes for several days before their supply was reconnected.
Up to 100,000 homes in the south were without power on Christmas day.
They were left in the dark for more than two weeks - but now homeowners in the south east who were left with no electricity over Christmas and the New Year have sparked a major row with their energy supplier over the amount of compensation they've been offered.
Some customers of UK Power Networks have been told they'll only receive £75 with a maximum payout of £423. But those who experienced the disruption say it's not enough and have told our reporter John Ryall that they'll fight for every penny they can get.
People in the south east who suffered power cuts during the storms over the festive period are angry with the amount of compensation being offered.
More than a thousand properties in Kent and hundreds in Sussex were without electricity for several days.
UK Power Networks is trebling the standard compensation of £27 to £75 as a 'goodwill gesture'.
Additional payments up to £432 will be offered to those cut off for longer than 48 hours.