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UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington, D.C.
20549

FORM 40-F

[   ] Registration statement pursuant to Section 12 of the
Securities Exchange Act of 1934 or

[X] Annual report pursuant to Section 13(a) or 15(d) of the
Securities Exchange Act of 1934

For the fifteen months ended **December 31,
2013**

Commission File Number **001-36204**

Energy Fuels Inc.(Exact name of registrant as specified in its charter)

|Ontario, Canada                    | 1090                         | 98-1067994           
|---------------------------------- | ---------------------------- | ---------------------
|(Province or Other Jurisdiction of | (Primary Standard Industrial | (I.R.S. Employer     
|*Incorporation or Organization)*   | Classification               | *Identification No.)*
|                                   | Code)                        |                      

225 Union Blvd., Suite 600Lakewood, CO 80228(303) 389-4130(Address and telephone number of
registrants principal executive offices)

Energy Fuels Resources (USA) Inc.225 Union Blvd.,
Suite 600Lakewood, CO 80228(303) 389-4130(Name, address (including zip code) and telephone number
(includingarea code) of agent for service in the United
States)

Securities to be registered pursuant to Section 12(b) of the
Act:

|Title of Each Class:        | Name of Each Exchange On
      Which Registered:
|--------------------------- | ------------------------------------------------
|Common Shares, no par value | **NYSE
MKT**                                    

Securities registered pursuant to Section 12(g) of
the Act: None

Securities for which there is a reporting obligation pursuant
to Section 15(d) of the Act: None

For annual reports, indicate by check mark the information
filed with this form:

|[X] Annual Information Form | [X] Audited Annual Financial Statements
|--------------------------- | ---------------------------------------

Indicate the number of outstanding shares of each of the
registrants classes of capital or common stock as of the close of the period
covered by the annual report: 19,601,251

Indicate by check mark whether the Registrant: (1) has filed
all reports required to be filed by Section 13 or 15(d) of the Exchange Act
during the preceding 12 months (or for such shorter period that the Registrant
was required to file such reports); and (2) has been subject to such filing
requirements for the past 90 days.[X] Yes [   ] No

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Indicate by check mark whether the registrant has submitted
electronically and posted on its corporate Web site, if any, every Interactive
Data File required to be submitted and posted pursuant to Rule 405 of Regulation
S-T (§232.405 of this chapter) during the preceding 12 months (or for such
shorter period that the registrant was required to submit and post such
files).[   ] Yes [   ] No

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FORWARD LOOKING STATEMENTS

This Annual Report on Form 40-F and the Exhibits attached
hereto contain forward-looking statements within the meaning of the Private
Securities Litigation Reform Act of 1995 and applicable Canadian securities
legislation, which may not be based on historical fact. Readers can identify
many of these statements by looking for words such as believe, expects,
will, intends, projects, anticipates, estimates, continues or
similar words or the negative thereof. Statements that are not based on
historical fact contained in this Annual Report, including through documents
incorporated by reference are forward-looking statements that involve risks and
uncertainties that could cause actual events or results to differ materially
from estimated or anticipated events or results reflected in the forward-looking
statements. Such forward-looking statements reflect our current view with
respect to future events and include, among other things, statements regarding
targets, estimates and/or assumptions in respect of reserves and/or resources,
and are based on estimates and/or assumptions related to future economic, market
and other conditions that, while considered reasonable by us, are inherently
subject to risks and uncertainties, including significant business, economic,
competitive, political and social uncertainties and contingencies.

The forward-looking statements and forward-looking
information contained in this Annual Report and the documents incorporated by
reference herein are expressly qualified by this cautionary statement. Energy
Fuels Inc. (the Corporation or the Registrant) does not undertake any
obligation to publicly update or revise any forward looking statements to
reflect actual results, changes in assumptions or changes in other factors
affecting any forward looking statements or information except as expressly
required by applicable securities laws. If the Corporation does update one or
more forward looking statements, no inference should be drawn that the
Corporation will make additional updates with respect to those or other forward
looking statements. Readers are cautioned not to put undue reliance on
forward-looking statements due to the inherent uncertainty therein

DIFFERENCES IN UNITED STATES AND CANADIAN REPORTING
PRACTICES

The Registrant is permitted, under a multijurisdictional
disclosure system adopted by the United States, to prepare this report in
accordance with Canadian disclosure requirements, which are different from those
of the United States. The Registrant prepares its financial statements, which
are filed with this report on Form 40-F in accordance with International
Financial Reporting Standards as issued by the International Accounting
Standards Board, and the audit is subject to Canadian auditing and auditor
independence standards.

RESOURCE AND RESERVE ESTIMATES

The terms measured, indicated and inferred resources are
Canadian mining terms as defined in accordance with National Instrument 43-101 
Standards of Disclosure for Mineral Projects (NI 43-101) under the guidelines
set out in the Canadian Institute of Mining, Metallurgy and Petroleum (the
CIM) CIM Standards on Mineral Resources and Mineral Reserves, adopted
by the CIM Council, as may be amended from time to time by the CIM. These
definitions differ from the definitions in the United States Securities &
Exchange Commission (Commission) Industry Guide 7 under the Securities
Act of 1933. Inferred mineral resources have a great amount of uncertainty
as to their existence, and as to their economic and legal feasibility. It cannot
be assumed that all or any part of an inferred mineral resource will ever be
upgraded to a higher category. Under Canadian rules, estimates of inferred
mineral resources may not form the basis of feasibility or other economic
studies.

Accordingly, information contained in this report and the
documents incorporated by reference herein containing descriptions of our
mineral deposits may not be comparable to similar information made public by
U.S. companies subject to the reporting and disclosure requirements under the
United States federal securities laws and the rules and regulations thereunder.
United States investors are cautioned not to assume that all or any part of
measured or indicated mineral resources will ever be converted into mineral
reserves. United States investors are also cautioned not to assume that all of
any part of an inferred mineral resource exists, or is economically or legally
mineable.

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DOCUMENTS FILED PURSUANT TO GENERAL INSTRUCTIONS

The following documents, filed as
Exhibits 99.1, 99.2, and 99.3 to this Annual Report on Form 40-F, are
hereby incorporated by reference into this Annual Report on Form 40-F

| | (a) | Annual Information Form for the fifteen months ended
      December 31, 2013;                                                                                                                                                                                                                                                                         
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| |     |                                                                                                                                                                                                                                                                                                                                                       
| | (b) | Managements Discussion and Analysis of Financial
      Condition and Results of Operations for the fifteen months ended December
      31, 2013; and                                                                                                                                                                                                 
| |     |                                                                                                                                                                                                                                                                                                                                                       
| | (c) | Consolidated Audited Financial Statements as at and for
      the fifteen months ended December 31, 2013 and as at and for the twelve months ended
      September 30, 2012, including the auditors report thereon, prepared under
      International Financial Reporting Standards as issued by the International
      Accounting Standards Board.

CERTIFICATIONS AND DISCLOSURE REGARDING CONTROLS AND
PROCEDURES

(a) Certifications. See Exhibits
99.4 and 99.5 to this Annual Report on Form 40-F.

(b) Disclosure Controls and
Procedures

As of the end of the period covered by this Annual Report on
Form 40-F, an evaluation was carried out under the supervision of and with the
participation of the Corporations management, including the Chief Executive
Officer (CEO) and Chief Financial Officer (CFO), of the effectiveness of the
design and operation of the Corporations disclosure controls and procedures (as
defined in Rule 13a  15(e) and Rule 15d  15(e) under the United States
Securities Exchange Act of 1934, as amended (the Exchange Act)). Based on that
evaluation, the CEO and the CFO have concluded that as of the end of the period
covered by this Annual Report on Form 40-F, the Corporations disclosure
controls and procedures were effective in ensuring that: (i) information
required to be disclosed by the Corporation in reports that it files or submits
to the Commission under the Exchange Act is recorded, processed, summarized and
reported within the time periods specified in applicable rules and forms and
(ii) material information required to be disclosed in its reports filed under
the Exchange Act is accumulated and communicated to its management, including
its CEO and CFO, as appropriate, to allow for accurate and timely decisions
regarding required disclosure.

It should be noted that while the CEO and CFO believe that the
Corporations disclosure controls and procedures provide a reasonable level of
assurance that they are effective, they do not expect that the Corporations
disclosure controls and procedures or internal control over financial reporting
will prevent all errors and fraud. A control system, no matter how well
conceived or operated, can provide only reasonable, not absolute, assurance that
the objectives of the control system are met

(c) Managements Annual Report
on Internal Control Over Financial Reporting

This annual report does not include a report of managements
assessment regarding internal control over financial reporting due to a
transition period established by rules of the Securities and Exchange Commission
for newly public companies.

(d) Attestation Report of the
Registered Public Accounting Firm

This annual report does not include an attestation report of
the Corporations registered public accounting firm due to a transition period
established by rules of the Securities and Exchange Commission for newly public
companies.

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(e) Changes in Internal
Control Over Financial Reporting

During the fifteen months ended December 31, 2013, there were
no changes in the Corporations internal control over financial reporting that
materially affected, or are likely to materially affect, the Corporations
internal control over financial reporting.

NOTICES PURSUANT TO REGULATION BTR

There were no notices required by Rule 104 of Regulation BTR
that the Registrant sent during the fifteen months ended December 31, 2013
concerning any equity security subject to a blackout period under Rule 101 of
Regulation BTR

AUDIT COMMITTEE FINANCIAL EXPERT

The Corporations Board has determined that Lawrence A.
Goldberg, Bruce D. Hansen, Paul A. Carroll and Ron F. Hochstein qualify as financial experts (as
defined in Item 407(d)(5) of Regulation S-K under the Exchange Act), are
financially sophisticated, as determined in accordance with Section 803B(2)(iii)
of the NYSE MKT Company Guide (the Company Guide), and are independent (as
determined under Exchange Act Rule 10A-3 and section 803A of the Company
Guide).

The Commission has indicated that the designation or
identification of a person as an audit committee financial expert does not make
such person an "expert" for any purpose, impose any duties, obligations or
liability on such person that are greater than those imposed on members of the
audit committee and the board of directors who do not carry this designation or
identification, or affect the duties, obligations or liability of any other
member of the audit committee or board of directors.

CODE OF ETHICS

The Corporation has adopted a written Code of Business Conduct
and Ethics that constitutes a code of ethics as defined in Form 40-F, and by
which it and all directors, officers and employees of the Corporation are
required to abide.

The Corporations Code of Business Conduct and Ethics is
available for viewing on the Corporations website at
http://www.energyfuels.com/_resources/governance/code_ethics.pdfand is
available in print to any shareholder who requests a copy from the Corporate
Secretary of the Corporation by contacting the Corporation by phone at (303)
389-4130 or email at dfrydenlund@energyfuels.com.

All amendments to the Code of Business Conduct and Ethics and
all waivers of the Code of Business Conduct and Ethics with respect to any of
the officers covered by it will be posted on the Corporations website within
five business days of the amendment or waiver,and provided in print to
any shareholder who requests them.

PRINCIPAL ACCOUNTANT FEES AND SERVICES

The required tabular disclosure is included on page 223 of the
Corporations Annual Information Form for the fifteen months ended December 31,
2013, filed as Exhibit 99.1 to this Annual Report on Form 40-F and is
incorporated herein by reference.

OFF-BALANCE SHEET TRANSACTIONS

The Registrant does not have any off-balance sheet
transactions.

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PRE-APPROVAL POLICES AND PROCEDURES

The required disclosure is included on page 223 of the
Corporations Annual Information Form for the fiscal year ended December 31,
2013, filed as Exhibit 99.1 to this Annual Report on Form 40-F and is
incorporated herein by reference.

TABULAR DISCLOSURE OF CONTRACTUAL OBLIGATIONS

The following table lists as of December 31, 2013 information
with respect to the Registrants known contractual obligations:

|                         |  |              |  |  |           |  |  |            |  |  | More than  | 
|------------------------ |  | ------------ |  |  | --------- |  |  | ---------- |  |  | ---------- | 
|                         |  |              |  |  | 1 to 3    |  |  | 3 to 5     |  |  | **5**      | 
|                         |  | **< 1 year** |  |  | years     |  |  | years      |  |  | **years**  | 
|                         |  | $            |  |  | $         |  |  | $          |  |  | $          | 
|Long-term Debt           |  | 2,033,000    |  |  | 4,056,000 |  |  | 21,571,000 |  |  | -          | 
|Finance leases           |  | 136,000      |  |  | 176,000   |  |  | -          |  |  | -          | 
|Operating lease          |  | 337,000      |  |  | 661,000   |  |  | 291,000    |  |  | -          | 
|Purchase obligations     |  | 4,125,000    |  |  | -         |  |  | -          |  |  | -          | 
|Reclamation expenditures |  | 1,876,000    |  |  | 761,000   |  |  | -          |  |  | 25,326,000 | 
|Total                    |  | 8,507,000    |  |  | 5,654,000 |  |  | 21,862,000 |  |  | 25,326,000 | 

IDENTIFICATION OF THE AUDIT COMMITTEE

The Corporations Board of Directors has a separately
designated standing Audit Committee established in accordance with Section
3(a)(58)(A) of the Exchange Act. The members of the Corporations Audit
Committee are identified under the heading Composition of the Audit Committee
in the Corporations Annual Information Form, attached hereto as Exhibit
99.1.The full text of the Corporations Audit Committee Charter is attached
to the Corporations AIF, filed as Exhibit 99.1 and incorporated by
reference in this annual report on Form 40-F.

MINE SAFETY DISCLOSURE

The information concerning mine safety violations or other
regulatory matters required by Item 16 of General Instruction B to Form 40-F is
included in Exhibit 99.6 to this Annual Report on Form 40-F.

CORPORATE GOVERNANCE

The Corporations Board of Directors (the Board) is
responsible for the Corporations Corporate Governance policies and has a
separately designated standing Compensation Committee, Governance and Nominating
Committee, Audit Committee, and Environment, Health and Safety Committee. The
Board has determined that all of the members of the Compensation Committee,
Nominating and Corporate Governance Committee, and Audit Committee, are
independent, based on the criteria for independence prescribed by section 803A
of the Company Guide and Section 805(c) of the Company Guide, as applicable.

Compensation Committee

The primary objective of the Compensation Committee is to
assist the Board in administering the Corporations executive and director
compensation program, succession planning for executive management, development
and retention of senior management, reviewing the performance of senior
management, recommending compensation for the Chief Executive Officer, and
reviewing and approving individual compensation for other executive officers.
The Corporations Compensation Committee is comprised of Richard J. Patricio
(chairman), J. Birks Bovaird, W. Robert Dengler and Bruce D. Hansen. The
Corporations CEO cannot be present during the Compensation Committees
deliberations or vote regarding the CEOs compensation.

Governance and Nominating Committee

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The Governance and Nominating Committee is appointed by the
Board to assist the Board in developing the Corporations approach to corporate
governance, including developing and monitoring a set of corporate governance
principles and guidelines that are specifically applicable to the Corporation,
and to identify and recommend to the Board qualified nominees for appointment or
election as directors. The members of the Governance and Nominating Committee
are Ron F. Hochstein (chairman), Paul A. Carroll, Mark E. Goodman and Richard J.
Patricio.

Environment, Health and Safety Committee

The Environment, Health and Safety Committee is appointed by
the Board to assist the Board in fulfilling its oversight responsibilities for
environmental, health and safety matters, and to oversee the development and
implementation of policies and best practices relating to environmental, health
and safety issues in order to ensure compliance with applicable laws,
regulations and policies in the jurisdictions in which the Corporation carries
on business. The Environment, Health and Safety Committee consists of W. Robert
Dengler (chairman), Stephen P. Antony, and Mark E. Goodman.

NYSE MKT CORPORATE GOVERNANCE

The Corporations common shares are listed on the NYSE MKT.
Section 110 of the Company Guide permits the NYSE MKT to consider the laws,
customs and practices of foreign issuers in relaxing certain NYSE MKT listing
criteria, and to grant exemptions from NYSE MKT listing criteria based on these
considerations. A company seeking relief under these provisions is required to
provide written certification from independent local counsel that the
non-complying practice is not prohibited by home country law. A description of
the significant ways in which the Corporations governance practices differ from
those followed by domestic companies pursuant to NYSE MKT standards is as
follows:

Shareholder Meeting Quorum Requirement: The NYSE MKT
minimum quorum requirement for a shareholder meeting is one-third of the
outstanding shares of common stock. A quorum for a meeting of shareholders of
the Corporation, as set forth in its bylaws, is two shareholders entitled to
vote at the meeting, whether present in person or represented by proxy.

Proxy Delivery Requirement: The NYSE MKT requires the
solicitation of proxies and delivery of proxy statements for all shareholder
meetings, and requires that these proxies shall be solicited pursuant to a proxy
statement that conforms to SEC proxy rules. The Corporation is a foreign
private issuer as defined in Rule 3b-4 under the Exchange Act, and the equity
securities of the Corporation are accordingly exempt from the proxy rules set
forth in Sections 14(a), 14(b), 14(c) and 14(f) of the Exchange Act. The
Corporation solicits proxies in accordance with applicable rules and regulations
in Canada.

The foregoing are consistent with the laws, customs and
practices in Canada.

In addition, the Corporation may from time-to-time seek relief
from NYSE MKT corporate governance requirements on specific transactions under
Section 110 of the Company Guide by providing written certification from
independent local counsel that the non-complying practice is not prohibited by
our home country law, in which case, the Corporation shall make the disclosure
of such transactions available on the Corporations website at
http://www.energyfuels.com/and/or in its annual report.
Information contained on its website is not part of this annual report.

UNDERTAKINGS

The Registrant undertakes to make available, in person or by
telephone, representatives to respond to inquiries made by the Commission staff,
and to furnish promptly, when requested to do so by the Commission staff,
information relating to: the securities registered pursuant to Form 40-F; the
securities in relation to which the obligation to file an annual report on Form
40-F arises; or transactions in said securities.

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CONSENT TO SERVICE OF PROCESS

The Corporation filed an
Appointment of Agent for Service of Process and Undertaking on Form F-X with
respect to the class of securities in relation to which the obligation to file
the Form 40-F arises. Any change to the name or address of the agent for service
of process will be communicated promptly to the Commission by amendment to Form
F-X referencing the Corporations file number.

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SIGNATURES

Pursuant to the requirements of the Exchange Act, the
Registrant certifies that it meets all of the requirements for filing on Form
40-F and has duly caused this registration statement to be signed on its behalf
by the undersigned, thereunto duly authorized.

|                     | ENERGY FUELS INC.               
|-------------------- | --------------------------------
|                     | /s/ David C. Frydenlund         
|                     | David C. Frydenlund, Senior Vice
|                     | President, General Counsel &    
|                     | Corporate Secretary             
|Date: March 28, 2014 |                                 

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EXHIBIT INDEX

The following documents are being filed with the Commission as
exhibits to this annual report on Form 40-F.

|Exhibit | Description                                                                                                                                                                   
|------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|        |                                                                                                                                                                               
|99.1    | Annual Information Form for the fifteen months ended December 31, 2013                                                                                                        
|99.2    | Managements Discussion and Analysis for the fifteen months ended December 31, 2013                                                                                           
|99.3    | Consolidated Financial Statements for the fifteen months ended December 31, 2013                                                                                              
|99.4    | Certifications of Chief Executive Officer and Chief Financial Officer pursuant to Rule 13(a)-14(a) or 15(d)-14 of the Securities Exchange Act of 1934                         
|99.5    | Certifications of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
|99.6    | Mine Safety Disclosure                                                                                                                                                        
|99.7    | Consent of KPMG LLP                                                                                                                                                           
|99.8    | Consent of Roscoe Postle Associates                                                                                                                                           
|99.9    | Consent of Chlumsky, Armbrust & Meyer LLC                                                                                                                                     
|99.10   | Consent of Terence  P. McNulty                                                                                                                                                
|99.11   | Consent of Mine Development Associates                                                                                                                                        
|99.12   | Consent of Richard White                                                                                                                                                      
|99.13   | Consent of William E. Roscoe                                                                                                                                                  
|99.14   | Consent of Douglas H. Underhill                                                                                                                                               
|99.15   | Consent of Thomas C. Pool                                                                                                                                                     
|99.16   | Consent of David Ross                                                                                                                                                         
|99.17   | Consent of Christopher Moreton                                                                                                                                                
|99.18   | Consent of Douglas C. Peters                                                                                                                                                  
|99.19   | Consent of Peters Geosciences                                                                                                                                                 
|99.20   | Consent of BRS Engineering                                                                                                                                                    
|99.21   | Consent of Douglas L. Beahm                                                                                                                                                   
|99.22   | Consent of O. Jay Gatten                                                                                                                                                      
|99.23   | Consent of Alinco GeoServices, Inc.                                                                                                                                           
|99.24   | Consent of M. Hassan Alief                                                                                                                                                    
|99.25   | Consent of North American Exploration Inc.                                                                                                                                    
|99.26   | Consent of Stephen P. Antony                                                                                                                                                  
|99.27   | Consent of Robert L. Sandefur                                                                                                                                                 
|99.28   | Consent of Patti Nakai-Lajoie                                                                                                                                                 
|99.29   | Consent of Robert Michaud                                                                                                                                                     
|99.30   | Consent of Stuart E. Collins                                                                                                                                                  
|99.31   | Consent of Roderick
  C. Smith                                                                                                                                                
|99.32   | Consent of Richard L. Nielsen                                                                                                                                                 
|99.33   | Consent of Matthew P. Reilly                                                                                                                                                  
|99.34   | Consent of Paul Tietz                                                                                                                                                         
|99.35   | Consent of Neil Prenn                                                                                                                                                         

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