Requirements for rooftop photovoltaic installation without support

no higher than four metres;at least 5m from boundaries;size of array is limited to 9m 2 or 3m wide and 3m deep;should not be installed within boundary of a listed building;in the case of land in a conservation area or in a World Heritage Site it should not be visible from the highway;only one standalone solar installation is permitted. [pdf]
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Photovoltaic support foundation

The solar array of a can be mounted on , generally with a few inches gap and parallel to the surface of the roof. If the rooftop is horizontal, the array is mounted with each panel aligned at an angle. If the panels are planned to be mounted before the construction of the roof, the roof can be designed accordingly by installing support brackets for the panels before the materials f. [pdf]
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Energy storage system installation conditions

NFPA 855 only permits residential ESS to be installed in the following areas:Attached garagesDetached GaragesOn exterior walls at least 3 ft (914 mm) away from doors or windowsOutdoors at least 3 ft (914 mm) away from doors or windowsUtility closetsStorage or utility spaces [pdf]
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