Energy efficiency is a measure of energy used for delivering a given service. Improving energy efficiency means getting more from the energy that we use. DECC - Energy Efficiency Strategy: 'The Energy Efficiency Opportunity in the UK'
  • Common sense tells us that eliminating unnecessary venting will save energy. However, putting this theory into practice is not as simple as it sounds, especially when humidity control is a key requirement.
  • 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.
  • In this factsheet, Farm Energy Centre's Chris Plackett, and Steve Adams and Allen Langton from Warwick Horticultural Research International (HRI) highlight the energy savings that can be made through effective glasshouse temperature.
  • Using degree day analysis enables you to account for weather and greenhouse temperature influences when looking at your energy use. 
  • Boilers may have to be operated at times when no heat is required, so that CO2 can be produced.  The rate of production is dependant on the firing level of the boiler. Two of the simpler set points available for managing CO2 enrichment are maximum boiler capacity for CO2 and minimum boiler capacity for CO2.
  • Variable speed electric drives (VSDs) enable what are otherwise fixed speed motors to operate a range of speeds and torques from zero to 100%. They can give great process flexibility, reduce wear and tear on machines, and dramatically cut running costs.
  • When growing greenhouse crops, it’s sometimes desirable to use a little more heat than strictly necessary to maintain adequate growing conditions. The purpose of this is to keep conditions comfortably away from those which could, for instance, trigger a disease problem.
  • This article explains some set points you can use with your climate control computer to control when your greenhouse screens open and close in relation to time of day and light level..