6-K

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of July 2018

TRANSALTA CORPORATION

(Translation of registrant’s name into English)

110-12^th Avenue S.W., Box 1900, Station “M”, Calgary, Alberta, T2P 2M1

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F ☐ Form 40-F ☒

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ____

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ____

I

The document listed below as Exhibit 99.1 to this Form 6-K is a copy of the Registrant’s news release dated July 5, 2018 announcing “Media Advisory: TransAlta Second Quarter 2018 Results and Conference Call”

This news release is being furnished, not filed, and will not be incorporated by reference into any registration statement filed by TransAlta Corporation under the Securities Act of 1933, as amended.

99.1 “Media Advisory: TransAlta Second Quarter 2018 Results and Conference Call”

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

TransAlta Corporation

By:  /s/ Brett Gellner

Brett Gellner

Interim Chief Financial Officer

Date: July 5, 2018

EXHIBIT INDEX

99.1 Press release dated July 5, 2018 announcing “Media Advisory: TransAlta Second Quarter 2018 Results and Conference Call”

EX-99.1

Exhibit 99.1

Media Advisory: TransAlta Second Quarter 2018 Results and Conference Call

CALGARY, July 5, 2018 /CNW/ - TransAlta Corporation ("TransAlta") (TSX: TA; NYSE: TAC) will release its second quarter 2018 results before market open on Friday, August 3, 2018. A conference call and webcast to discuss the results will be held for investors, analysts, members of the media and other interested parties the same day at 9:00 a.m. Mountain Time (11:00 a.m. ET). The media will be invited to ask questions following analysts.

Please contact the conference operator five minutes prior to the call, noting "TransAlta Corporation" as the company and "Sally Taylor" as moderator.

Dial-in numbers - Q2 2018 Results:
Toll-free North American participants call: 1-888-231-8191
Outside of Canada & USA call: 1-647-427-7450

A link to the live webcast will be available on the Investor Centre section of TransAlta's website at http://www.transalta.com/investors/events-and-presentations. If you are unable to participate in the call, the instant replay is accessible at 1-855-859-2056 (Canada and USA toll free) with TransAlta pass code 8876455 followed by the # sign. A transcript of the broadcast will be posted on TransAlta's website once it becomes available.

About TransAlta
TransAlta owns, operates and develops a diverse fleet of electrical power generation assets in Canada, the United States and Australia with a focus on long-term shareholder value. We provide municipalities, medium and large industries, businesses and utility customers clean, affordable, energy efficient, and reliable power. Today, we are one of Canada's largest producers of wind power and Alberta's largest producer of hydro-electric power. For over 100 years, TransAlta has been a responsible operator and a proud community-member where its employees work and live. TransAlta aligns its corporate goals with the UN Sustainable Development Goals and we have been recognized by CDP (formerly Climate Disclosure Project) as an industry leader on Climate Change Management. We are also proud to have achieved the Silver level PAR (Progressive Aboriginal Relations) designation by the Canadian Council for Aboriginal Business.  

For more information about TransAlta, visit our web site at transalta.com.

View original content:http://www.prnewswire.com/news-releases/media-advisory-transalta-second-quarter-2018-results-and-conference-call-300676644.html

SOURCE TransAlta Corporation

View original content: http://www.newswire.ca/en/releases/archive/July2018/05/c6450.html

%CIK: 0001144800

For further information: Investor Inquiries: Sally Taylor, Manager, Investor Relations, Phone: 1-800-387-3598 in Canada and U.S., Email: investor_relations@transalta.com; Media Inquiries: Stacey Hatcher, Manager, Communications, Phone: Toll-free media number: 1-855-255-9184, Email: ta_media_relations@transalta.com

CO: TransAlta Corporation

CNW 12:46e 05-JUL-18