Hinkley B, which started generating in 1976, is due to be turned off in 2023.
Hinkley Point C is set to take between 8 and 10 years to become fully operational.
Hinkley A, which is now being decommissioned, began generating in 1965 and was closed down in 1999.
Protesters had threatened to scale the wall around Hinkley Site as part of the mass trespass.
Seven people have been arrested as anti-nuclear protesters carried out a planned trespass at Hinkley Point.
The first nuclear site licence for 25 years has been granted to Hinkley Point in Somerset.
BBC: Hinkley Point nuclear station: Licence granted for site
In November 2009 it announced plans to install pylons between Hinkley Point and Avonmouth.
BBC: National Grid urged to use underground cables in Somerset
The Stop Hinkley group said reactors will discharge more radioactive waste into the Severn Estuary.
Radioactive emissions from the proposed Hinkley Point C nuclear plant have been underestimated, campaigners claim.
Somerset-based campaign group Stop Hinkley claims there is a cancer cluster close to the power station.
BBC: NEWS | UK | England | Somerset | Nuclear talk powers fresh debate
Instead of putting taxpayers money into Hinkley, ministers would fix the price of the new nuclear electricity.
Three environmental permits enabling the operation of a new nuclear plant at Hinkley Point have been granted.
BBC: Environmental permits granted for Hinkley Point station
It will be made up of two nuclear reactors and will be built next to Hinkley Point A and B.
It is negotiating with ministers over what it can charge for the electricity Hinkley generates for decades to come.
BBC: EDF cuts spending on planned Hinkley nuclear power plant
Hinkley Point B in Somerset, and Hunterston B in North Ayrshire, are now expected to remain operational until 2023.
Hinkley has been identified by the government as one of eight potential sites for a new nuclear power station.
Hinkley C would be one of the UK's biggest infrastructure projects in years.
Stop Hinkley jointly handed in its submissions to the EA with the Nuclear Free Authorities (NFLA) and other organisations.
An application for a new nuclear power station at Hinkley Point in Somerset has been submitted by EDF Energy.
Hinkley Point C will be the third nuclear plant at the site.
French energy giant EDF announced this week it was reducing the number of workers at its Hinkley Point C project.
"I'm hoping for a long-term career in construction and hopefully to get a job out at Hinkley Point, " she says.
The site's current Hinkley Point B came into service in 1976 but its working life has been extended to 2016.
The French companies are looking at building two new plants at Hinkley Point in Somerset, but will need planning permission.
Hinkley C would be one of the UK's biggest infrastructure projects for years with 5, 600 workers on site at the peak of construction.
The energy giant is negotiating with ministers over what it can charge for the electricity Hinkley generates for decades to come.
Concerns have been raised over the height of pylons between Hinkley Point and Avonmouth by North Somerset MP Dr Liam Fox.
He said Hinkley Point C will provide a "supply chain investment and a large number of apprenticeships for our young people".
BBC: Hinkley Point C: Decision widens chasm in local opinion
But despite dozens of calls to the police and Hinkley and Bosworth Borough Council, little was done to help the family.
More than 1, 500 workers are employed across Hinkley Point B and Hunterston B, which each generate enough electricity for one million homes.
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