How to Calculate Costs and Go Green in Singapore

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Key Takeaways

You can calculate electricity costs at home by identifying which appliances use the most energy and how often they are used.
Comparing your electricity usage to Singapore’s average household consumption provides useful context and helps identify areas for improvement.
Small adjustments, such as reducing unnecessary usage or improving appliance habits, can add up to noticeable savings over time.
Choosing electricity plans from Flo Energy helps you reduce your environmental impact while supporting Singapore's transition to cleaner energy sources.

How to Calculate and Reduce Electricity Costs at Home

Electricity is something most of us use every day, but few of us stop to think about how our monthly bill is actually calculated. When costs start increasing, it is often difficult to tell whether it is due to changing habits, higher usage, or simply appliances consuming more energy than expected.

Below, we’ll walk through how to calculate your energy consumption, how it compares to the average household usage in Singapore, and explore greener options that can support both cost savings and sustainability goals.

List Your Appliances and Their Power Ratings

In order to calculate your electricity costs, you’ll need to know what actually consumes energy. Take a walk around your home and note down the electrical appliances that operate regularly. For example:

Air conditioners
Refrigerators
Washing machines
Water heaters
Lighting
Computers and monitors
Televisions
Kitchen appliances

Next, check each appliance’s power rating, which indicates how much electricity it uses while operating. This is usually shown in watts (W) and can often be found on the product label, in the manual, or on the manufacturer's website.

🌟 Pro Tip: If you have older appliances, it may be worth checking their power ratings more closely. Older models are often less energy-efficient than newer alternatives and may consume more electricity than expected. Appliance labels and manufacturer

Calculate Your Daily and Monthly Electricity Usage

Once you know your appliance power ratings, you can estimate how much electricity you use.

Use this formula:

Electricity Usage (kWh) = (Power Rating × Hours Used)/1000

This calculation converts electricity use to kilowatt-hours (kWh), the unit shown on your electricity bills.

From there, you can calculate your electricity costs at home based on how much your electricity retailer charges. For example:

If a 1,500W air conditioner runs for 8 hours: 1,500 × 8 ÷ 1,000 = 12 kWh per day
If electricity costs $0.30 per kWh: 12 × $0.30 = $3.60 per day
Over 30 days: $3.60 × 30 = $108 per month

However, there’s no need to calculate and account for every single appliance in your home.

According to the National Environment Agency (NEA), air conditioning, refrigerators, lighting, water heaters, and washing machines account for most of the electricity use in a typical Singaporean home.

Starting with these higher-consumption appliances can give you a clearer picture of where your electricity costs are coming from and where changes may have the biggest impact.

Identify Areas of Improvement

You do not need to overhaul your lifestyle overnight. In many cases, a few simple adjustments can help you reduce costs while maintaining comfort.

Some practical ways to get started include:

Raise air conditioning temperatures slightly: Even a 1°C increase can help you save around 3% of utility costs while keeping your space comfortable.
Turn off appliances when not in use: Switching off lights, televisions, and other appliances when they are no longer needed helps avoid unnecessary energy use.
Replace older appliances with more efficient models: Newer appliances with better energy efficiency ratings often consume less electricity over the long term.
Reduce standby power where possible: Devices left plugged in can continue drawing small amounts of electricity even when not actively used.

These small changes may not seem significant day-to-day, but they can add up over time.

Explore Greener Electricity Options

Once you have a better understanding of your electricity usage and costs, there is another factor worth considering: the environmental impact of the electricity you consume.

Electricity generation remains a source of global carbon emissions, so the energy choices we make today can contribute to broader sustainability efforts over time. While reducing electricity usage is one way to lower your impact, choosing cleaner electricity options is another way to support a more sustainable energy future.

Luckily, going greener does not necessarily mean paying more or changing your lifestyle. At Flo Energy, a trusted electricity supplier in Singapore, we make it easier for households to make greener energy choices without compromising on cost or convenience.

Flo matches 100% of your household electricity usage with regional Renewable Energy Certificates (RECs) and redeems them on your behalf, allowing you to support renewable energy generation across the region. Best of all, Flo’s home electricity plans are designed to remain affordable and reliable, making it simple to switch and take a practical step towards a greener future.

Start Small, Save Smarter with Flo Energy

You do not need to make major changes overnight to save money on electricity at home. By learning how to calculate your electricity costs at home, making small lifestyle changes, and choosing the right electricity plan, you can make a meaningful difference over time.

Contact Flo Energy today to learn how affordable renewable electricity plans can help support your journey towards smarter energy use.