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Energy efficiency is not just low-hanging fruit; it is fruit on the ground. Stephen Chu, US Secretary of Energy

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  • Using heat to control humidity in a greenhouse gives the advantages of a good yielding and a disease-free crop. But with energy prices rising, many growers are left wondering whether humidity control is something they can really afford. With this in mind, the specialist growers Coletta & Tyson took the decision to save on energy costs by minimising their active humidity control. Read More...
  • Minimum pipe temperature set points are used to force heat into a greenhouse even if it is not required to maintain the required greenhouse temperature. This can be to: Help with humidity control Ensure heat stores are empty by sunrise to maximise CO2 enrichment during the daytime. Read More...
  • In our article 'Optimising screen and vent control with lights',  we explained the importance of gapping when screens are used over supplementary lights. But during spells of extreme cold weather, is it still correct for your screen to gap — and wouldn’t a fully closed screen help to save energy? Read More...
  • It is now well proven that retractable thermal screens can save energy without having a detrimental effect on plant growth or quality; and you might even argue that a screen is now also an essential tool for both energy saving and greenhouse environment optimisation. Read More...
  • Avoiding condensation on plants is a key part of any disease control strategy. Poinsettia growers have to pay particular attention to this problem as they use a technique to control plant height called ‘Drop’. ‘Drop’ involves reducing the greenhouse temperature to as low as 12 degrees C before sunrise and is followed by an increase in the greenhouse temperature to the daytime set point within one hour after sunrise. Read More...

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