Portal Status: Verified Operational ✅

My Nichigas Portal: Your Essential Guide to Online Gas & Electricity Management

Quick Summary

  • 東彩ガス retail services are now Nichigas
  • My Nichigas app is your online portal
  • Check bills, usage, and change payments
  • Customer number and phone needed for access
  • Contact Nichigas for support

For customers previously served by 東彩ガス (Tosai Gas), it's important to understand a significant change in service. As of January 1, 2024, the retail gas and electricity business of 東彩ガス was transferred to 日本瓦斯 (Nippon Gas), widely known as Nichigas. This means that if you were a 東彩ガス customer, Nichigas now provides your energy services, and the My Nichigas online portal is your primary tool for managing your account. This comprehensive guide focuses on the My Nichigas digital platform, offering former 東彩ガス customers and new Nichigas users a clear path to accessing and utilizing their online account. We'll cover everything from getting started to understanding its features, ensuring a smooth online experience with your gas and electricity services.

Preparing for Your My Nichigas Online Account

Accessing Your My Nichigas Customer Portal

  1. Download the My Nichigas app from your device's app store or visit the My Nichigas web portal.
  2. If you are a new user, tap on 「新規登録」 (New Registration).
  3. Review and agree to the terms of service.
  4. Enter your customer number (お客様番号) as it appears on your gas meter reading slip.
  5. Select your registered phone number from the options displayed. A verification code will be sent to this number via SMS or voice call.
  6. Enter the received verification code into the designated field.
  7. Create a strong password for your account. It must be 8-14 characters long and include a mix of uppercase letters, lowercase letters, and numbers.
  8. You will be given an option to enable biometric authentication (face or fingerprint ID) for quicker future logins. Choose 「はい」 (Yes) if you wish to use this feature.
  9. Confirm your registration details. Once completed, you can now access your personalized customer dashboard.
  10. For existing users of My Nichigas (including former 東彩ガス customers whose accounts were transferred), you can log in directly using your customer number and established password. If your customer number changed due to the reorganization, please use the new number provided by Nichigas; your password should remain the same.

Managing Your Gas and Electricity with My Nichigas

Addressing My Nichigas Access Concerns

⚠️ Cannot access My Nichigas after 東彩ガス transfer

Cause: Customer number may have changed due to Nichigas reorganization.

Solution: Your customer number may have been updated. Nichigas would have sent you a new customer number. Please use this new number to log in. Your existing password should still be valid. If you haven't received a new customer number, contact Nichigas Customer Center at 0120-911-333.

⚠️ Forgot My Nichigas password

Cause: Password forgotten or entered incorrectly.

Solution: While the app does not explicitly detail a 'forgot password' function within the available information, most digital portals offer a password reset option, usually linked to your registered email or phone number. If you cannot find a reset link on the login page, please contact the Nichigas Customer Center at 0120-911-333 for assistance.

⚠️ Unable to find customer number

Cause: Customer number is required for registration and login but is unknown.

Solution: Your customer number (お客様番号) is crucial for using My Nichigas. It is printed on your monthly gas meter reading slip. Please check your latest bill or meter reading notification. If you still cannot locate it, reach out to the Nichigas Customer Center at 0120-911-333 for support.

Securing Your Digital Nichigas Information

📌 Verified Portal Reference Official domain link & quick copy action

🎧 Official Support & Help Center

For urgent matters like gas emergencies, contact the Nichigas Customer Center 24/7 at 0120-911-333. For general inquiries regarding the former 東彩ガス transfer, you can call 0120-78-1031 during business hours (9:00〜17:30, excluding Sundays and holidays).

Your Questions About My Nichigas Answered

Q: How can I check my gas and electricity bills online with Nichigas?

You can easily check your monthly gas and electricity bills, as well as your payment history, through the My Nichigas app or web portal. Your usage details from the past two years are also available in graphical format for easy review.

Q: What happened to 東彩ガス and how do I manage my account now?

東彩ガス's retail energy business was transferred to Nichigas on January 1, 2024. Former 東彩ガス customers are now served by Nichigas, and you can manage your account, including bills and usage, via the My Nichigas app or web portal.

Q: Is the My Nichigas app free to use?

Yes, the My Nichigas app is free to download and use. However, please be aware that standard communication fees (data charges) from your mobile carrier will apply when using the app.

Q: How do I change my payment method for Nichigas?

You can change your payment method, whether it's setting up or updating credit card details or bank account information, directly through the My Nichigas app or web portal. Look for the payment settings within your digital portal.

Q: What do I need to register for My Nichigas?

To register for My Nichigas, you will need your customer number (お客様番号), which can be found on your gas meter reading slip, and your registered phone number for verification during the sign-up process.

Wrap Up

The transition from 東彩ガス to Nichigas brings all former customers under the robust My Nichigas online system. This digital portal empowers you to take control of your energy management, from reviewing bills to updating personal information, all from the convenience of your device. By leveraging its features and understanding the registration process, you can ensure a seamless and efficient experience with your Nichigas services. Should any questions arise, dedicated support is just a call away, ready to assist you in navigating your digital energy journey.

PS

Portal Support Team

This guide was reviewed and verified by our internal technical support experts in October 2026. We constantly monitor official portal updates to ensure you have the most accurate and secure login instructions.