This site did not show evidence of storing passwords in plaintext.
This site does allow secured connections (https)
This site did show a clear way to unsubscribe from their emails
This site does verify your email address.
Membership Emails
Below is a sample of the emails you can expect to receive when signed up to Con Ed.
You're almost ready to start using your account. Simply click the button below within 7 days to complete your registration. This email address will be your new login ID.