Section 285.6100 Schedule F-4: Additions to Plant in Service Since the Last Rate Case

a) Provide information concerning plant additions included in rate base on Schedule B-1 that are not currently in the rate base ordered in the utility's most recent rate proceeding. The number of projects for which information must be provided is the lower of the 30 most costly additions or the number of additions whose cost is greater than that shown in the table below. For multi-jurisdictional utilities, the cost of the addition shall be considered on the basis of total company cost, by type of utility. The supporting work papers shall include the reports included in response to subsection (b)(7).

UTILITY NET PLANT (From most recent ILCC Form 21, pages 200-201)	Minimum Cost of Project for which information need be provided in Section 285.6100
	ELECTRIC UTILITIES	GAS UTILITIES

Equal to or greater than $1 billion	Higher of 0.1% of net plant or $2,000,000	Lower of 0.2% of net plant or $10,000,000
Greater than $50 million but less than $1 billion	$1,000,000	Higher of 0.2% of net plant or $1,000,000
$50 million or Less	$100,000	$100,000

b) Information provided for the top ten most costly additions shall include:

1) Description of addition;

2) Date project started;

3) Completion date;

4) Completion cost;

5) Reason for the project;

6) Alternatives considered and the reasons for rejecting each alternative; and

7) List of reports relied upon by management when deciding to pursue the rate base addition.

c) Information provided for the next 20 most expensive additions to rate base shall include:

1) Description of addition;

2) Completion cost; and

3) Reason for the project.