The potential developer, Western Power Distribution Investments Ltd, says it has no comment to make in response to the Welsh Government's dismissal of its appeal.
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The asphalt was was installed as a sea defence in 1984 to protect 260 homes and businesses.
Public Health Wales has asked people to check in on vulnerable neighbours, family and friends during the cold weather.
A buzzard which was found illegally shot near Powys has prompted concern by the RSPB and police.