Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Accel X LP
   2. Issuer Name and Ticker or Trading Symbol
Sunrun Inc. [RUN] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
428 UNIVERSITY AVENUE		 3. Date of Earliest Transaction (Month/Day/Year)
09/30/2015
(Street)

PALO ALTO, CA 94301		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Warrants (right to buy) (1) $ 22.5 09/30/2015   A   15,298   09/30/2015 09/30/2018 Common Stock 15,298 $ 0 15,298 D (2)  
Warrants (right to buy) (1) $ 22.5 09/30/2015   A   1,148   09/30/2015 09/30/2018 Common Stock 1,148 $ 0 1,148 I Held by Accel X Strategic Partners L.P. (2)
Warrants (right to buy) (1) $ 22.5 09/30/2015   A   614   09/30/2015 09/30/2018 Common Stock 614 $ 0 614 I Held by Accel Investors 2009 L.L.C. (3)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Accel X LP
428 UNIVERSITY AVENUE
PALO ALTO, CA 94301		     X    
Accel Investors 2009 L.L.C.
428 UNIVERSITY AVENUE
PALO ALTO, CA 94301		     X    
Accel X Associates L.L.C.
428 UNIVERSITY AVENUE
PALO ALTO, CA 94301		     X    
ACCEL X STRATEGIC PARTNERS LP
428 UNIVERSITY AVENUE
PALO ALTO, CA 94301		     X    

Signatures

 /s/ Tracy L. Sedlock, Attorney-in-Fact for Accel X L.P.   10/02/2015
**Signature of Reporting Person Date
 /s/ Tracy L. Sedlock, Attorney-in-Fact for Accel Investors 2009 L.L.C.   10/02/2015
**Signature of Reporting Person Date
 /s/ Tracy L. Sedlock, Attorney-in-Fact for Accel X Associates L.L.C.   10/02/2015
**Signature of Reporting Person Date
 /s/ Tracy L. Sedlock, Attorney-in-Fact for Accel X Strategic Partners L.P.   10/02/2015
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The warrant was issued pursuant to a Stock Issuance Agreement, the form of which is filed as Exhibit 4.4 to Amendment No. 1 to the Issuer's Registration Statement on Form S-1, filed with the Securities and Exchange Commission on July 22, 2015.
(2) Accel X Associates L.L.C. ("A10A") is the General Partner of Accel X L.P. and Accel X Strategic Partners L.P. and has sole voting and investment power. Andrew G. Braccia, James W. Breyer, Kevin J. Efrusy, Sameer K. Gandhi, Ping Li, Tracy L. Sedlock, and Richard P. Wong, a director of the Issuer, are the Managing Members of A10A and share such powers. Each Managing Member disclaims beneficial ownership except to the extent of his or her pecuniary interest therein.
(3) Andrew G. Braccia, James W. Breyer, Kevin J. Efrusy, Sameer K. Gandhi, Ping Li, Tracy L. Sedlock, and Richard P. Wong, a director of the Issuer, are the Managing Members of Accel Investors 2009 L.L.C. and therefore share the voting and investment powers. Each Managing Member disclaims beneficial ownership except to the extent of his or her pecuniary interest therein.

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