EXHIBIT 99.1

JOINT FILING AGREEMENT
PURSUANT TO RULE 13d-1(k)
The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained herein and therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate.
DATE: February 13, 2020


   
TRINE SPONSOR IH, LLC
 
   
 
Robin Trine Holdings, LLC, its managing member
 
       
   
By:
/s/ Leo Hindery, Jr.
 
     
Name: Leo Hindery, Jr.
 
     
Title:   Managing Member
 
         
   
ROBIN TRINE HOLDINGS, LLC
 
         
   
By:
/s/ Leo Hindery, Jr.
 
     
Name: Leo Hindery, Jr.
 
     
Title:   Managing Member
 
         
   
HPS INVESTMENT PARTNERS, LLC
 
         
   
By:
/s/ Paul Knollmeyer
 
     
Name: Paul Knollmeyer
 
     
Title:   Chief Financial Officer
 
         
    /s/ Leo Hindery, Jr.  
   
Leo Hindery, Jr.