5 hectares, if the number of dwellings is not given. Those developments are expected to adhere to principles of sustainable energy design, 01u 00pursuing first 02u 00energy saving through building design and energy-efficient technologies, then meeting the remaining demand utilising renewable energy, and, only as a last resource, fossil fuels or grid electricity. 02font 02br 02br 00I suggest that you need to simplify these sentences.
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