Energy Monitor

Monitor and calculate energy consumption, electricity costs, and CO2 emissions for multiple devices.

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About This Tool

This energy consumption monitoring tool helps you track and calculate the electricity usage of multiple devices. Enter device details like name, power rating (watts), daily usage hours, and your local electricity cost per kWh. The tool calculates total energy consumption in kWh, total cost, and estimated CO2 emissions. You can add multiple devices to get a comprehensive view of your energy usage patterns. Results are displayed with clear breakdowns per device and totals.

Save your calculation history with a free account

How to Use

Enter device details: name, power rating in watts, daily usage hours, and cost per kWh (optional).
Click 'Add Device' to include it in your monitoring list.
Repeat for all devices you want to monitor.
Click 'Calculate Energy Consumption' to see results.
View total energy consumption, cost, CO2 emissions, and per-device breakdown.
Use 'Clear All' to reset and start over.

Frequently Asked Questions

Find Quick Answers

How accurate is the energy consumption calculation?

The calculation uses standard formulas: Energy (kWh) = Power (kW) × Time (hours). Cost = Energy × Rate. CO2 emissions use an average emission factor. Results are estimates; actual consumption may vary based on device efficiency and usage patterns.

What is the default CO2 emission factor?

The tool uses an average emission factor of 0.5 kg CO2 per kWh, based on global grid averages. You can adjust this in the advanced settings if you know your local grid's emission factor.

Can I save my device list for future use?

Currently, the tool runs entirely client-side in your browser. Your device list is stored temporarily in browser memory but will be lost if you refresh the page. For persistent storage, consider using our premium features.

What units should I use for power rating?

Enter power rating in watts (W). Common examples: LED bulb (10W), laptop (65W), refrigerator (150W). The tool automatically converts to kilowatts (kW) for calculations.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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