Lighting Cost Estimator


This calculator estimates yield growth and electicity cost of supplemental lighting.

How it works?

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 avaliable at Purdue University.


Specify Crop

Crop type specifies lighting requirements such as light intensity and photoperiod.

Production Periods

Location

This calculator relies on a meteorological model to calculate the daily light integrals. You can get sigificantly different results based on the microclimate of your location.

Results

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.

PPFD

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

Costs

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.

Yield

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.

Details

Hint: supplemental lighting has the most efficiancy when natural DLI is under the required.

Get Notified

This calculator is under constructions. We'll send you e-mail in case of major updates