Businesses will be permitted to install rooftop solar arrays of up to 1MW in size without the need for planning permission, under new Government changes expected to be confirmed by Communities Secretary Eric Pickles today (25 March).

The revised Permitted Development regulations, published online today, state that the allowed development threshold for rooftop solar panels on commercial property is to be extended from the current limit of 50kW to systems that are up to 20 times larger.

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