Basis for computing the estimated electricity consumption of home appliances for the Meralco Appliance Calculator (Meralco AppCal)
Sample Assumed Meralco Residential Electricity Rate per Bill Amount Bracket
Bill Amount (Php) Price per KWh (Php)
P0 to P108 P0.33
P109 to P338 P5.18
P339 to P573 P6.64
P574 to P1,021 P8.08
P1,022 to P2,109 P10.12
P2,110 to P3,271 P10.50
P3,272 to P4,625 P10.87
P4,626 to P7,684 P11.54
P7,685 and up P11.80
Important Note About the Assumed Rate per Kilowatt-hour: The price per kWh shown above is based on June 2010 Meralco electricity rates. The assumed price of electricity per kilowatt-hour is derived statistically and uses representative rate per bill amount bracket group. These assumed data are updated on a regular basis as deemed necessary by Meralco AppCal application administrators. This computation may vary from the actual consumption and rates reflected in the customer’s Meralco monthly electric bill and therefore, this computation should not be used in any way for billing purposes, complaints or concerns against Meralco. This computation should not be used by the customer to estimate electric consumption of appliances and/or equipment used for non-residential or business or commercial purposes.
FOR REFRIGERATORS & FREEZERS
Formula:
Estimated cost per hour = [Rate per kilowatt-hour x (appliance wattage/ 1000) x 14 hours ]/ 24 hours per day
Example:
For a 6 cubic feet refrigerator for a household with an average monthly bill of P2,500.00.
Cost per hour = [Rate per kilowatt-hour x (appliance wattage/ 1000) x 14 hours] / 24 hours per day
Cost per hour = [P10.50 x (100 watts /1000) x 14 hours]/ 24 hours per day
Cost per hour = [P10.50 x (.10 kilowatt) x 14 hours]/ 24 hours per day
Cost per hour = [P14.70]/ 24 hours per day
Cost per hour = P00.61
Cost per month = P00.61x number of hours used in one month
FOR CONVENTIONAL AIR CONDITIONING UNITS
Formula
Cost per hour = Rate x [(appliance wattage x 0.8 x 0.
+ (appliance wattage x 0.2)] / 1000)
Example:
For a 1 horsepower (944 watts) air conditioner for a household with an average monthly bill of P2,500.00.
Cost per hour = Rate x [(appliance wattage x 0.8 x 0.8 ) + (appliance wattage x 0.2)] / 1000
Cost per hour = P10.50 x [(944 watts x 0.8 x 0.8 ) + (944 watts x 0.2)] / 1000
Cost per hour = P10.50 x [(604.16) + (188.8 )] / 1000
Cost per hour = P10.50 x [792.96] / 1000
Cost per hour = P10.50 x 0.79 kilowatt
Cost per hour = P8.30
Cost per month = P8.30 x number of hours used in one month
FOR INVERTER AIR CONDITIONING UNITS
Formula
Cost per hour = Rate x [(appliance wattage x 0.965 x 0.48 ) + (appliance wattage x 0.035 x 1)] / 1000)
Example:
For a 1 horsepower (769 watts) air conditioner for a household with an average monthly bill of P2,500.00.
Cost per hour = Rate x [(appliance wattage x 0.965 x 0.48 ) + (appliance wattage x 0.035 x 1)] / 1000
Cost per hour = P10.50 x [(769 watts x 0.965 x 0.48 ) + (769 watts x 0.035 x 1)] / 1000
Cost per hour = P10.50 x [(356.20) + (26.92)] / 1000
Cost per hour = P10.50 x [383.12] / 1000
Cost per hour = P10.50 x 0.38 kilowatt
Cost per hour = P3.99
Cost per month = P3.99 x number of hours used in one month
FOR ALL OTHER APPLIANCES
Formula:
Cost per hour = Rate x (appliance wattage / 1000)
Example:
For a 29-inch color TV set for a household with an average monthly bill of P2,500.00.
Cost per hour = Rate x (appliance wattage / 1000)
Cost per hour = P10.50 x (145 watts / 1000)
Cost per hour = P10.50 x (.145 kilowatt)
Cost per hour = P1.52
Cost per month = P1.52 x number of hours used in one month
Sample MAC Computations
Type of Appliance No. of Hours Used Per Day Cost Per Hour Cost Per Day Cost Per Week Cost Per Month
1 horsepower air conditioner (944w) 6 8.12 48.75 341.24 1364.96
6 cubicfeet refrigerator 24 0.61 14.69 102.86 411.44
29-inch color TV set 5 1.52 7.61 53.27 213.07
Twintub washing machine (6 kg) 4 hours per week 2.91 11.63 11.63 46.52
3-blade ceiling fan 5 1.47 7.35 51.43 205.72
Desktop PC with Monitor 4 2.36 9.45 66.12 264.50
IMPORTANT NOTE: THE MERALCO APPCAL COMPUTATION SHOWN ABOVE IS BASED ON JUNE 2010 MERALCO RESIDENTIAL ELECTRICITY RATES. THIS COMPUTATION IS AN ESTIMATE BASED ON ASSUMED DATA. THE COMPUTATION RESULTS OF THE MERALCO APPCAL MAY SLIGHTLY VARY FROM THE ACTUAL CONSUMPTION REFLECTED IN THE MERALCO CUSTOMER’S MONTHLY ELECTRIC BILL AND THEREFORE, THE MERALCO APPCAL COMPUTATION RESULTS SHOULD NOT BE USED IN ANY WAY FOR BILLING PURPOSES, COMPLAINTS OR CONCERNS AGAINST MERALCO, ITS OFFICERS, EMPLOYEES, AGENTS, SUBSIDIARIES, AFFILIATES, SUPPLIERS AND OTHER PARTNERS. THE MERALCO APPCAL SHOULD NOT BE USED BY ANY PERSON TO ESTIMATE ELECTRIC CONSUMPTION OF APPLIANCES AND/OR EQUIPMENT USED FOR NON-RESIDENTIAL OR BUSINESS OR COMMERCIAL PURPOSES.