This PPG describes the various renewable forms of energy; explains renewable energy's potential role in tackling greenhouse gas emissions; sets out the relevant instruments of policy, including the Non-Fossil Fuel Obligation; outlines relevant environmental protection legislation; gives a statement of general planning aims; explains how local planning authorities should include renewable energy policies in their plans, and advises them to consider what contribution their area might make; notes the considerations which should apply when it is intended to locate renewable energy installations in designated areas; explains when environmental assessment is required; sets out the environmental implications of renewable energy; and refers to planning conditions, temporary permissions and other consents/permissions. It also contains an annex on Wind Energy which has two main sections: the technology, and planning implications.