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idemitsuでんき: Optimize Your Energy & Save More | Official Site

Quick Summary

  • Manage electricity online
  • Car fuel discounts
  • Track energy usage
  • Earn loyalty points
  • Secure account access

idemitsuでんき, previously known as シェル 電気 (Shell Denki) or 出光昭和シェル電気 (Idemitsu Showa Shell Denki), offers a comprehensive electricity supply service designed to bring value and convenience to your daily life. As a rebranded service from Idemitsu Kosan Co.,Ltd., it has been supplying electricity since 2003, expanding to household services since 2016. This service aims to make your electricity management simpler and more rewarding.

Whether you're looking to reduce your energy costs, benefit from exclusive car-related perks, or simply manage your electricity usage with greater transparency, idemitsuでんき provides a robust digital portal. This online platform, known as でんきMYページ (Electricity My Page), is your central hub for all service-related activities, ensuring you have control over your energy consumption and billing.

Getting Started with idemitsuでんき: What You Need

Seamless Access to Your idemitsuでんき Online Account

  1. Navigate to the official idemitsuでんき website.
  2. Locate and click on the ログイン (Login) button, typically found at the top right of the page or within the でんきMYページ section.
  3. Enter your registered ログインID (Login ID) and パスワード (Password) into the respective fields.
  4. Click the ログイン button to access your personal online account management dashboard.

Unlocking the Full Potential of idemitsuでんき Services

Smooth Solutions for idemitsuでんき Account Access

⚠️ Cannot log in to でんきMYページ

Cause: Incorrect Login ID or password, or an account lock due to multiple failed attempts.

Solution: First, carefully re-enter your ログインID and パスワード. If the issue persists, use the 'Forgot ID' or 'Forgot Password' links provided on the login page to initiate a recovery process. We know being locked out is stressful, so follow the on-screen prompts for the fastest resolution, or contact support if your account is locked.

⚠️ Forgot Login ID or Password

Cause: Loss of login credentials.

Solution: On the でんきMYページ login screen, click the link for 'Forgot ID' or 'Forgot Password'. You will typically be asked to provide your registered email address or other identifying information to reset your credentials. A new password or ID reminder will be sent to your registered email.

⚠️ Account locked

Cause: Repeated incorrect login attempts trigger security measures.

Solution: If your account becomes locked, it’s a security measure to protect your data. Often, it will automatically unlock after a set period. If you need immediate access, or if it doesn't unlock, please contact the idemitsuでんき customer support center for assistance to regain access.

⚠️ Electricity bill or usage not displayed correctly on My Page

Cause: System delay, incorrect contract details, or a technical issue with the online portal.

Solution: Allow a few business days for the latest information to update. If the data is still missing or incorrect after this period, ensure your contract details are up-to-date. If the problem continues, reach out to customer support with your contract number for investigation.

Protecting Your idemitsuでんき Information and Privacy

📌 Verified Portal Reference Official domain link & quick copy action

🎧 Official Support & Help Center

Phone: 0120-033-364 (Toll-free) or 0570-03-6789 (Navi Dial, charged). Online Inquiry: https://denki.idemitsu.com/contact/

Your idemitsuでんき Inquiries, Clearly Answered

Q: How can I check my idemitsuでんき electricity bill online?

You can check your electricity bill and detailed usage statements anytime by logging into your でんきMYページ (Electricity My Page) on the official idemitsuでんき website. This digital portal provides comprehensive billing information and usage history.

Q: Are there any discounts for car owners with idemitsuでんき?

Yes, idemitsuでんき offers クルマ特割 (Car Options Discounts). You can choose between two options: the ガソリンコース, which provides a 2 yen/liter discount on fuel at Idemitsu service stations, or the EVコース, which gives electric vehicle owners a 200 yen discount on their monthly electricity bill.

Q: What is the process for canceling my idemitsuでんき contract if I move?

If you are moving, you will need to contact the idemitsuでんき customer service center to arrange for cancellation. They will guide you through the required steps, including confirming your final usage date and providing a new address for your last bill. It is advisable to contact them a week or two before your moving date.

Q: Can I change my payment method for idemitsuでんき online?

Yes, your でんきMYページ allows you to manage and change your payment methods. Look for the relevant section within your online account management dashboard to update your billing information conveniently.

Q: How do I contact idemitsuでんき customer support?

For inquiries and support, you can call the idemitsuでんき customer center at 0120-033-364. You can also visit their official website and navigate to the inquiry page at https://denki.idemitsu.com/contact/ for further assistance.

Wrap Up

idemitsuでんき provides a robust and customer-focused platform for managing your household or business electricity needs. With its user-friendly でんきMYページ, various cost-saving benefits including car-related discounts, and a commitment to data privacy, it offers a compelling energy solution. By leveraging its digital tools and staying informed, you can optimize your electricity usage and enjoy a more efficient energy experience with idemitsuでんき.

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.