Exhibit 12.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER
PURSUANT TO SECTION 302 OF THE 
SARBANES-OXLEY ACT OF 2002

I, Charles R.
Provini, certify that:

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|1. | I have reviewed this annual report on Form 20-F of Natcore
 Technology, Inc. (the Company).                                                                                                                                                                                                                                      
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|2. | Based on my knowledge, this report does not contain any untrue
 statement of a material fact or
 omit to state a material fact
 necessary to make the statements made, in light of the circumstances under
 which such statements were made, not misleading with respect to the period
 covered by this report;                    
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|3. | Based on my knowledge, the financial statements, and other financial
 information included in this report, fairly present in all material respects the financial
 condition, results of operations and
 cash flows of the Company
 as of, and for, the periods presented
 in this report;                                          
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|4. | The Company's other certifying officers and I are responsible for
 establishing and maintaining disclosure controls and procedures (as defined
 in Exchange Act Rules 13a-15(e)) and 15d-15(e) and internal control over
 financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)
 for the Company, and have:
|   |                                                                                                                                                                                                                                                                                                                                    
|   | a.                                                                                                                                                                                                                                                                                                                                  | Designed such disclosure controls and procedures, or caused such
 disclosure controls and procedures to be designed under our supervision, to
 ensure that material information relating to the Company, including its
 consolidated subsidiaries, is made known to us by others within those
 entities, particularly during the period in which this report is being
 prepared;
|   |                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                 
|   | b.                                                                                                                                                                                                                                                                                                                                  | Designed such internal control over financial reporting, or caused
 such internal control over financial reporting to be designed under our
 supervision, to provide reasonable assurance regarding the reliability of
 financial reporting and the preparation of financial statements for external
 purposes in accordance with generally accepted accounting principles;     
|   |                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                 
|   | c.                                                                                                                                                                                                                                                                                                                                  | Evaluated the effectiveness of the Company's disclosure controls
 and procedures and
 presented in this report our conclusions about the effectiveness of
 the disclosure controls and procedures, as of the end of the period covered
 by this report based on such
 evaluation; and                                                                                           
|   |                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                 
|   | d.                                                                                                                                                                                                                                                                                                                                  | Disclosed in this report any change in the Company's internal control
 over financial reporting that
 occurred during the period
 covered by the annual report that has materially affected, or is likely to
 materially affect, the company's internal control over financial reporting; and                                                                                   
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|5. | The Company's other certifying officers and I have disclosed, based
 on our most recent evaluation of internal control over financial reporting,
 to the Company's auditors and the Audit Committee of the Company's Board of Directors (or persons performing
 the equivalent function);                                          
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|   | a.                                                                                                                                                                                                                                                                                                                                  | All significant deficiencies and material weaknesses in the design or
 operation of internal controls
 over financial reporting which
 are reasonably likely to adversely affect the Company's ability to record,
 process, summarize and report financial
 information; and                                                                                                    
|   |                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                 
|   | b.                                                                                                                                                                                                                                                                                                                                  | Any, fraud, whether or not material, that involves management or
 other employees who have a significant role in the Company's internal control
 over financial reporting.                                                                                                                                                                                                      



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| | ------------------- | -----------------------------------------------------------
| | Date: May
 16, 2017 | (SIGNATURE)                                                
| |                     |                                                            
| |                     | Charles R.
 Provini 
 President and Chief Executive Officer

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