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These folding louvered porch doors provide effective shade from low-angle east and west sunlight and can open for views; the photovoltaic panels overhead allow in filtered natural light
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Right – This model home for the Solar Decathlon competition incorporates vertical trellises and retractable exterior blinds to control solar heat gain.
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Vertical side-shading, such as these side fins, can provide effective summertime shading for north-facing windows, but are generally not recommended for other orientations due to their marginal performance and restricted views