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Glasshouse LEDs save greenhouse gasses

UK plant researchers are looking into LED lighting to grow plants with less energy. While outdoors in the summer there is no real need for to provide plants with artificial lighting, it is increasingly used to extend the growing day and growing season inside greenhouses. It is not necessarily the efficacy of LEDs that is the advantage, as the high-pressure sodium (HPS) lamps currently used can deliver up to 150 lm/W, but the ability save power by only delivering wavelengths useful to plants – green, for example, reflects off plants.

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