2017-07977. Alliant Energy Corporate Services, Inc.; Notice of Institution of Section 206 Proceeding and Refund Effective Date

On April 13, 2017, a letter order was issued in Docket No. EL17-60-000 by the Director, Division of Electric Power—Central, Office of Energy Market Regulation, pursuant to section 206 of the Federal Power Act (FPA), 16 U.S.C. 824e (2012), instituting an investigation into whether the proposed tariff revisions to update the cost-based revenue requirement for the provision of Reactive Supply and Voltage Control from Generation or Other Sources Service from generating facilities owned and operated by Interstate Power and Light Company and Wisconsin Power and Light Company may be unjust, unreasonable, unduly discriminatory or preferential. Alliant Energy Corporate Services, Inc., 159 FERC 62,054 (2017).

The refund effective date in Docket No. EL17-60-000, established pursuant to section 206(b) of the FPA, will be the date of publication of this notice in the Federal Register.

Any interested person desiring to be heard in Docket No. EL17-60-000 must file a notice of intervention or motion to intervene, as appropriate, with the Federal Energy Regulatory Commission, 888 First Street, NE., Washington, DC 20426, in accordance with Rule 214 of the Commission's Rules of Practice and Procedure, 18 CFR 385.214, within 21 days of the date of issuance of the order.

Dated: April 13, 2017.

Kimberly D. Bose,

Secretary.