a small 50 watt polycrystalline solar panel mounted on the edge of the roof of a house for an off-grid light

solar panel renewable energy sustainability ecofriendly environmental efficiency rooftop photovoltaic sustainable design power ecological living clean infrastructure development green initiatives solutions innovation conservation small 50 watt polycrystalline roof eave compact consumer level module offgrid cell residential home installation size mounted garden sunny technology cheap rectangular pv setup 12 volt harness sun mini