Registration and Contact

You may register or contact us via telephone, or online through our mail form or Web Eneria site (Shizuoka Gas subscriber website).

Please contact us via telephone if your question is time sensitive.

Navi Dial

Navi Dial is a telephone service offered by NTT Communications.

(Certain IP telephones and other devices may not be compatible with Navi Dial.)

Use of Navi Dial includes charges:

  • NTT fixed-line telephones: ¥8.5 per three minutes (¥9.18 including tax)
  • Direct-line telephones (including Hikari Denwa (fiber optic telephones) and IP telephones (other than 050 numbers): ¥10 per 3.5 minutes (¥10.8 including tax)
  • Mobile phones, PHS, automobile telephones: ¥10 per 20 seconds (¥10.8 including tax)


  • Local-call discount services do not apply when calling from fixed-line telephones.
  • Free call minutes and discounted call services included in basic contract usage fees for mobile phones do not apply when using Navi Dial.
  • Regular public phone charges apply when using public pay telephones.
  • Certain IP telephones and other devices are not compatible with Navi Dial. Use the following telephone numbers if this is the case.