Climate Control Energy Cost Calculator
Estimate annual greenhouse heating and cooling energy costs by climate zone using degree days and utility rates.
Inputs
sq ft
HDD
CDD
BTU/hr·ft²·°F
%
$/therm
$/kWh
Results
Total Annual Energy Cost
$11,680.86
Cost per Sq Ft
$4.06
Annual Heating (Therms)8,316 therms
Annual Heating Cost$9,979.2
Annual Cooling (kWh)14,180.5 kWh
Annual Cooling Cost$1,701.66
How to Use This Calculator
- Enter your greenhouse floor area in sq ft and look up your location's annual Heating Degree Days (HDD) and Cooling Degree Days (CDD).
- Enter the glazing U-value (heat transfer coefficient) — double poly is ~0.7, polycarbonate 16mm is ~0.45.
- Enter your heating system efficiency (%) and cooling COP, plus local energy costs for gas ($/therm) and electricity ($/kWh).
- Review Annual Heating Cost, Annual Cooling Cost, and Total Annual Energy Cost to plan your operating budget.
- Compare Cost per Sq Ft across different glazing types or energy efficiency improvements to identify the best investment.
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