Lower Your Bills: How to Save Energy in Japan | Guidable - Your Guide to a Sustainable, Wellbeing-centred Life in Japan

Lower Your Bills: How to Save Energy in Japan

By Tanzeela Waseem Mar 19, 2025

If you’re living in Japan and haven’t yet discovered ways to save energy here, you’re missing out! Not only does saving energy help preserve the environment, but it also lowers your bills—so it’s a double win! Whether you’re new to Japan or just didn’t know about these energy-saving life hacks, stick with us to learn more.

Save Energy Through Cost-Effective Choices!

This article will guide you in becoming more energy-efficient and show how these methods are cost-effective, helping you reduce electricity costs.

Energy Efficient Labels

energy-efficiency labels, helps save energy

Image credit: taken by the author

Energy-efficient labels are crucial when shopping for appliances or renting or buying houses in Japan. These labels ensure you’re investing in products that help you save energy and make environmentally friendly choices.

Look for “Universal energy-saving labels” standardized by the Top Runner Program when shopping for appliances. This program serves to improve energy efficiency and provides a set of standards that manufacturers must follow. The label will provide three key pieces of information: star ratings from 1 to 5 (with 5 being the most efficient), an “e” mark or energy saving label (green if the product meets the Top Runner standard, or orange if it does not), and the expected annual electricity bill for that product. These labels help you easily compare which products are more energy-efficient and cost-effective!

For houses or buildings in Japan, “Energy saving performance labeling system for buildings” is used, and the labels may differ depending on the type of property– ”energy saving performance labels for homes” and “energy efficiency label for non-residential buildings”. They will typically include information such as the annual utility bill, whether the house has renewable energy equipment installed, its energy consumption and thermal insulation performance index. Proper insulation helps minimize the need for heating or cooling, while the utility bill information will allow you to compare different properties and choose the most cost-effective option. These measurements ensure that you invest in a home that saves energy, uses clean energy, and saves you money. 

Unplug Your Appliances When Not in Use!

How many of us leave our TVs and microwaves plugged in overnight while we sleep for hours? Probably most of us. While the energy savings may seem minor initially, they add up over time. Many appliances have standby power consumption, meaning they continue to use electricity even when turned off.

For example, the digital display on your microwave, rice cooker, or thermostat constantly draws power. If you only plug in the microwave when you need to heat food, think of how much energy you could save that would otherwise be wasted just to keep the display on! The same goes for a rice cooker—unplug it on days when you don’t use it. Turn off your thermostat before sleeping or lower the temperature to avoid unnecessary energy use. Similarly, the power indicator light on your TV still uses electricity even when the TV is off. Unplugging your TV overnight or when you’re away can help reduce waste. To avoid hassle, use a power strip to turn off multiple appliances with a single switch.

By investing in energy-efficient appliances and developing the habit of unplugging devices, you can cut down costs and save energy in the long run.

Kotatsu

Kotatsu, a Japanese Traditional Heating Table

Image credit: Canva.com

A common issue in many Japanese homes is insulation. Even if you find an affordable house, poor insulation can lead to higher energy costs, as you’ll constantly need to rely on heaters in winter. A simple and efficient way to stay warm without racking up high electricity bills is by investing in a kotatsu.

A kotatsu is a traditional Japanese heating system consisting of a low table with a built-in heater, covered by a blanket to trap the heat. You sit around it with legs tucked underneath, staying warm and cozy. It’s an incredibly cost-efficient investment, using only around 600W of electricity, compared to other heaters that consume over 1,500W. Less electricity use means lower bills!

The blanket makes the kotatsu even more energy-efficient, preventing heat from escaping and concentrating warmth in the right place—where people are sitting. Unlike traditional heaters that warm an entire room, the kotatsu ensures targeted heating, which saves energy by reducing unnecessary heat escape.

So, not only does a kotatsu save you money, it also gives you a taste of Japanese culture while keeping you comfortably warm in the most efficient way!

Let’s Save Energy and Money!

Energy-efficient labels and kotatsu help you save energy and cut costs. While carefully considering where to invest requires effort, the long-term benefits far outweigh the short-term struggles!

By making smart choices—such as choosing energy-efficient appliances, using a kotatsu instead of high-energy heaters, or unplugging devices when not in use—you can lower your bills and help the environment!

Related articles:

English-Speaking Gas and Electricity Utilities in Japan That Can Actually Save You Money! 

 

Featured image credits: Canva.com