1. What is Cost per Watt?

Cost per Watt is a metric that helps consumers understand the electricity cost for running electrical devices. It converts the common kilowatt-hour (kWh) rate to a per-watt basis, making it easier to calculate energy costs for low-power devices.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• Cost/W — Cost per watt in PHP (Philippine Peso)
• Cost/kWh — Your electricity rate per kilowatt-hour
• 1000 — Conversion factor (1000 watts = 1 kilowatt)

Explanation: Since 1 kilowatt equals 1000 watts, dividing the cost per kWh by 1000 gives the cost per watt-hour.

3. Importance of Cost per Watt Calculation

Details: Understanding cost per watt helps Filipino households:

• Calculate operating costs of small appliances
• Compare energy efficiency of devices
• Estimate electricity bills more accurately
• Make informed decisions about energy usage

4. Using the Calculator

Tips:

• Enter your current electricity rate in PHP/kWh (found on your Meralco bill)
• The average rate in the Philippines is around 8-12 PHP/kWh
• Value must be greater than 0

5. Frequently Asked Questions (FAQ)

Q1: Why calculate cost per watt?
A: It's useful for calculating energy costs of small devices that consume few watts, like LED bulbs or phone chargers.

Q2: How can I use this in daily life?
A: Multiply cost per watt by a device's wattage and hours used to estimate its daily cost.

Q3: What's the average electricity rate in the Philippines?
A: As of 2023, rates typically range from 8-12 PHP/kWh depending on area and consumption.

Q4: Does this include all charges on my bill?
A: Yes, if you use the total amount paid divided by kWh consumed from your bill.

Q5: How accurate is this calculation?
A: It's mathematically precise for converting kWh rates to watt rates, but actual consumption depends on device efficiency and usage patterns.