Any supplier of electricity at retail shall furnish service, upon application, to any applicant within the service area of such supplier if it is economically feasible to service and supply the applicant. The electric service shall be furnished by the supplier within a reasonable time after the application is made. If the supplier and the applicant cannot agree upon any of the terms under which service is to be furnished, or if the applicant alleges that the supplier is not treating all customers and applicants fairly and without discrimination within the same rate class, the matter shall be submitted to the board for hearing and determination.