Company: EMICF
Filing Date: 2025-05-23
Form Type: 6-K
Source: 0001193125-25-125794
Chunk: 0

Company: EMERA INC
Filing Date: 2025-05-23
Form: 6-K
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of May, 2025

Commission File Number: 001-42631

Emera Incorporated

(Exact name of registrant as specified in its charter)

5151 Terminal Road

Halifax NS B3J 1A1

Canada

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of 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): ☐

Exhibits 99.1, 99.2 and 99.3 of this Form 6-K shall be incorporated by reference into the registration statement of Emera Incorporated on Form 40-F (File No. 001-42631).

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.

| Date: May 23, 2025 |     | EMERA INCORPORATED 
 By:                |     | /s/ Brian Curry                    |
|:-------------------|:----|:-------------------|:----|:-----------------------------------|
|                    |     |                    |     | Name: Brian Curry Title: Corporate 
 Secretary                          |

EXHIBIT INDEX

| Exhibit No. 
 99.1        
 99.2        |     | Description                                                                                                     
 Emera Incorporated Media Release (Emera to Commence Trading on the New York Stock Exchange), dated May 22, 2025 
 Emera Incorporated Media Release (Emera Inc. Announces Election of Directors), dated May 22, 2025               |
|:------------|:----|:----------------------------------------------------------------------------------------------------------------|
| 99.3        |     | Emera Incorporated Annual Shareholders