annual service availability index

annual service availability index

[¦an·yə·wəl ¦sər·vəs ə‚vāl·ə′bil·əd·ē ‚in‚deks]

(electricity)

The ratio of customer-hours of service supplied by an electrical utility during one year to the customer-hours requested, expressed as a percentage.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.