LED Cost Per DLI Delivered
Compare electrical and allocated fixture costs per delivered canopy photon mole and per DLI unit using supplied efficacy/delivery; canopy area distinguishes total photons from areal dose.
Description
Lighting cost per delivered photon differs from cost per areal daily light integral.
Lighting cost per delivered photon differs from cost per areal daily light integral. Canopy area links total photon moles to dose per square meter.1
Compare electrical and allocated fixture costs per delivered canopy photon mole and per DLI unit using supplied efficacy/delivery; canopy area distinguishes total photons from areal dose.
When to use LED Cost Per DLI Delivered
Use this tool to compare electrical and allocated fixture costs per delivered canopy photon mole and per DLI unit using supplied efficacy/delivery; canopy area distinguishes total photons from areal dose.
Prepare the plant, nutrient, light or scheduling measurements for the intended crop and period. Keep paired records aligned and confirm units and supplied target values.
How to use LED Cost Per DLI Delivered and understand its results
- Prepare the plant, nutrient, light or scheduling measurements for the intended crop and period. Keep paired records aligned and confirm units and supplied target values.
- Enter lampElectricalWatts, photonEfficacyMicromolesPerJoule, canopyDeliveryFraction, canopyAreaM2, dailyOnHours, electricityCostPerKwh, dailyAllocatedFixtureCost using the field table and calculation rules, then run the tool.
- Read deliveredDailyLightIntegral, dailyElectricalKwh, dailyTotalLightingCost, costPerDeliveredMole, costPerDliUnit. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| lampElectricalWatts | Lamp electrical watts | number | Required |
| photonEfficacyMicromolesPerJoule | Photon efficacy micromoles per joule | number | Required |
| canopyDeliveryFraction | Canopy delivery fraction | number | Required |
| canopyAreaM2 | Canopy area m2 | number | Required |
| dailyOnHours | Daily on hours | number | Required |
| electricityCostPerKwh | Electricity cost per kwh | number | Required |
| dailyAllocatedFixtureCost | Daily allocated fixture cost | number | Required |
Use positive power, efficacy, canopy area and delivery fraction in (0,1], operating hours in (0,24], and nonnegative electricity/fixture costs in one currency. Compute kWh, total daily cost, delivered DLI and both cost denominators.
delivered moles=watts × efficacy μmol/J × delivery × hours × 0.0036; DLI=moles/area Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| deliveredDailyLightIntegral | Delivered daily light integral | number |
| dailyElectricalKwh | Daily electrical kwh | number |
| dailyTotalLightingCost | Daily total lighting cost | number |
| costPerDeliveredMole | Cost per delivered mole | number |
| costPerDliUnit | Cost per dli unit | number |
{
"input": {
"lampElectricalWatts": 100,
"photonEfficacyMicromolesPerJoule": 2,
"canopyDeliveryFraction": 0.5,
"canopyAreaM2": 2,
"dailyOnHours": 10,
"electricityCostPerKwh": 0.2,
"dailyAllocatedFixtureCost": 0.1
},
"output": {
"deliveredDailyLightIntegral": 1.8,
"dailyElectricalKwh": 1,
"dailyTotalLightingCost": 0.30000000000000004,
"costPerDeliveredMole": 0.08333333333333334,
"costPerDliUnit": 0.16666666666666669
}
}Limitations and assumptions
Efficacy and delivery are supplied. Tariffs, crop response and fixture performance are not fetched or validated.
Numeric inputs and returned numeric values must be finite; an unrepresentable returned value produces an error. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Supplemental Light Shortfall Hours: Invert measured natural-light deficit into supplementary hours with delivery loss and a caller available photoperiod; unmet photon budget is explicit, not a crop lighting recommendation. For a complementary task, use Daily Light Integral MOL M2 Day: Integrate measured time-varying PPFD by trapezoids into observed daily photon dose; unobserved hours are not silently filled and a constant PPFD-to-DLI alias is excluded.
References
-
LED Cost Per DLI Delivered — tool.io
Similar or alternative tools
- Supplemental Light Shortfall Hours
Invert measured natural-light deficit into supplementary hours with delivery loss and a caller available photoperiod; unmet photon budget is explicit, not a crop lighting recommendation.
- Daily Light Integral MOL M2 Day
Integrate measured time-varying PPFD by trapezoids into observed daily photon dose; unobserved hours are not silently filled and a constant PPFD-to-DLI alias is excluded.