Lighting Cost Estimator
This calculator estimates yield growth and electicity cost of supplemental lighting.
By specifying a location, we're estimating daily PAR intensities inside the greenhouse using meteorological data and other approximations. Once the expected DLI values inside the greenhouse are known, we calculate the crop-specific lighting requirements.
For further information, a great summary article on greenhouse crop lighting is available at Purdue University.
These numbers are based on a simple lighting strategy: as long as natural light intensity is below the threshold set in the production plan, the lights are kicked on at full capacity, otherwise all turned off. Note, the following numbers are estimates.
Max PPFD: N/A μmol/s/m.
To cover this, you'll need about the following intensity lightsources:
LED: N/A W/m2
HPS: N/A W/m2
Burning hours: N/A hrs/season
Which has an energy consumption of:
LED: N/A kWh/season
HPS: N/A kWh/season
For (industrial) LED fixtures this is about the only expense to bear, while HPS fixtures require further maintenance and bulb replacements.
Growth: +N/A %/season
Note, many other variables are (like culitvar) affecting the yield. The number represents the yield growth compared to non-lit scenarios, given the same production plan.
ROI LED: +N/A %/kWh/m2
ROI HPS: +N/A %/kWh/m2
If your current yield is 35 kg/m2, adding LED supplemental lighting is expected to yield +N/A g/m2 for each kWh/m2 energy spent.
Hint: supplemental lighting has the most efficiancy when natural DLI is under the required.
This calculator is under constructions. We'll send you e-mail in case of major updates