Energy Evaluation Worksheet
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1
2Energy Evaluation Worksheet
Clear Fields
Step 1: Determining your household consumption and the Base and HVAC load
Column 1
Column 2
Column 3
Column 4
HVAC Load:
Base Load:
Month
Total Consumption
Total Consumption – Base Load
From calculation below
January
February
March
April
May
June
July
August
September
October
November
December
Totals: add all 12
Base load calculation: Find the two lowest total consumption numbers from column 2. Add them together and divide by 2. This
is your approximate Base load. Place that number in each cell in column 3, except the last cell (total cell).
__________________ + ________________ = _________________ ÷ 2 = _________________
lowest from column 2
next lowest from
monthly base load for
total
column 3
column 2
HVAC Load calculation: For each month, subtract the Base load from total consumption (Column 2 - Column 3).This is the
approximate amount of energy used for heating and cooling that month (Column 4). If the number is negative, put it in
anyway, you’ll need that for your total. Sometimes it can be negative.
Totals: Add all 12 months up in each column. These are the annual usages for each column.
Step 2: Determining your energy costs and where your money is going
Calculate your electricity rate: From your 12-Month Billing and Usage Chart, divide the total
$ Amount of FPL Bills by total KWH Used to determine your electric rate.
________________________ ÷ _______________ = $ ___________________
kwh consumption
total current electric charges
rate for electricity ($/kwh)
Calculating annual costs: Multiply the total consumption values by the electric rate you pay. This is your total annual cost,
your annual cost for heating and cooling and your annual cost for base loads.
________________________ × ____________ = $ __________________
rate
total annual cost
total from column 2
________________________ × ____________ = $ __________________
rate
annual cost for base load
total from column 3
________________
__ ÷ 12 = $ ___________
__________
annual cost for base load
monthly cost for base load
________________________ × ____________ = $ ________________________
total from column 4
rate
annual cost for heating and cooling
Calculate the ratio for heating and cooling: Divide the total for HVAC from column 4 by the total annual consumption from
column 2. This will give you the percentage of your total usage that goes to heating and cooling the home.
_____________________ ÷ _____________________ = __________ × (100) = _______________%
total from column 4
total from column 2
decimal #
percent for HVAC
Step 3: Building envelope inspection
Air leakage inspection: Inspect the home for
Inspect and measure the attic insulation: Go into the attic and
places that can allow air to travel freely from
measure the depth and overall quality of the insulation.
inside the home to outside of the home and
_____________________ × ____________________ = _______________
write down where those places are.
insulation depth in inches effective R-value per inch
R-value
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