UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

SCHEDULE 13D

(AMENDMENT NO. 1)

UNDER THE SECURITIES EXCHANGE ACT OF 1934

SOLAR ENERTECH CORP.

(NAME OF ISSUER)

COMMON STOCK, $0.001 PAR VALUE

(TITLE OF CLASS OF SECURITIES)

834156101

(CUSIP NUMBER)

JOSEPH P. BARTLETT, ESQ.
GREENBERG GLUSKER FIELDS CLAMAN & MACHTINGER LLP
1900 AVENUE OF THE STARS, SUITE 2100
LOS ANGELES, CA 90067
(310) 201-7481

(Name, Address and Telephone Number of Person Authorized to Receive Notices
and Communications)

April 30, 2008
(Date of Event which Requires Filing of this Statement)

If the reporting person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Sections 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box / /.

NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Section 240.13d-7(b) for other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).


CUSIP No. 834156101

--------------------------------------------------------------------------------
1. Name of Reporting Persons.
 I.R.S. Identification Nos. of above persons (entities only).

 David Gelbaum, Trustee, The Quercus Trust
--------------------------------------------------------------------------------
2. Check the Appropriate Box If a Member of a Group (See Instructions)
 (a) [X]
 (b) [_]
--------------------------------------------------------------------------------
3. SEC Use Only

--------------------------------------------------------------------------------
4. Source of Funds (See Instructions)
 PF
--------------------------------------------------------------------------------
5. Check If Disclosure of Legal Proceedings Is Required Pursuant to
 Items 2(d) or 2(e) [_]

--------------------------------------------------------------------------------
6. Citizenship or Place of Organization
 U.S.
--------------------------------------------------------------------------------
 7. Sole Voting Power
 NUMBER OF -0-
 SHARES -----------------------------------------------------------------
BENEFICIALLY 8. Shared Voting Power
 OWNED BY 36,803,037
 EACH -----------------------------------------------------------------
 REPORTING 9. Sole Dispositive Power
 PERSON -0-
 WITH -----------------------------------------------------------------
 10. Shared Dispositive Power
 36,803,037
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
 36,803,037
--------------------------------------------------------------------------------
12. Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares
 (See Instructions) [_]
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11)
 27.7%(1)
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions)
 IN
--------------------------------------------------------------------------------
_______________
(1) Based on 133,042,663 shares of Common Stock, par value $0.001 per share
 ("Common Stock") outstanding, calculated in accordance with Rule 13d.

 2


CUSIP No. 834156101

--------------------------------------------------------------------------------
1. Name of Reporting Persons.
 I.R.S. Identification Nos. of above persons (entities only).

 Monica Chavez Gelbaum, Trustee, The Quercus Trust
--------------------------------------------------------------------------------
2. Check the Appropriate Box If a Member of a Group (See Instructions)
 (a) [X]
 (b) [_]
--------------------------------------------------------------------------------
3. SEC Use Only

--------------------------------------------------------------------------------
4. Source of Funds (See Instructions)
 PF
--------------------------------------------------------------------------------
5. Check If Disclosure of Legal Proceedings Is Required Pursuant to
 Items 2(d) or 2(e) [_]

--------------------------------------------------------------------------------
6. Citizenship or Place of Organization
 U.S.
--------------------------------------------------------------------------------
 7. Sole Voting Power
 NUMBER OF -0-
 SHARES -----------------------------------------------------------------
BENEFICIALLY 8. Shared Voting Power
 OWNED BY 36,803,037
 EACH -----------------------------------------------------------------
 REPORTING 9. Sole Dispositive Power
 PERSON -0-
 WITH -----------------------------------------------------------------
 10. Shared Dispositive Power
 36,803,037
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
 36,803,037
--------------------------------------------------------------------------------
12. Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares
 (See Instructions) [_]
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11)
 27.7%(1)
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions)
 IN
--------------------------------------------------------------------------------
_______________
(1) Based on 133,042,663 shares of Common Stock, par value $0.001 per share
 ("Common Stock") outstanding, calculated in accordance with Rule 13d.

 3


CUSIP No. 834156101

--------------------------------------------------------------------------------
1. Name of Reporting Persons.
 I.R.S. Identification Nos. of above persons (entities only).

 The Quercus Trust
--------------------------------------------------------------------------------
2. Check the Appropriate Box If a Member of a Group (See Instructions)
 (a) [X]
 (b) [_]
--------------------------------------------------------------------------------
3. SEC Use Only

--------------------------------------------------------------------------------
4. Source of Funds (See Instructions)
 PF
--------------------------------------------------------------------------------
5. Check If Disclosure of Legal Proceedings Is Required Pursuant to
 Items 2(d) or 2(e) [_]

--------------------------------------------------------------------------------
6. Citizenship or Place of Organization
 U.S.
--------------------------------------------------------------------------------
 7. Sole Voting Power
 NUMBER OF -0-
 SHARES -----------------------------------------------------------------
BENEFICIALLY 8. Shared Voting Power
 OWNED BY 36,803,037
 EACH -----------------------------------------------------------------
 REPORTING 9. Sole Dispositive Power
 PERSON -0-
 WITH -----------------------------------------------------------------
 10. Shared Dispositive Power
 36,803,037
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
 36,803,037
--------------------------------------------------------------------------------
12. Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares
 (See Instructions) [_]
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11)
 27.7%(1)
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions)
 OO
--------------------------------------------------------------------------------
_______________
(1) Based on 133,042,663 shares of Common Stock, par value $0.001 per share
 ("Common Stock") outstanding, calculated in accordance with Rule 13d.

 4


CUSIP No. 834156101

Item 1.

 This Amendment No. 1 to Schedule 13D (this "Amendment No. 1") amends and
restates, where indicated, the statement on Schedule 13D relating to the Common
Stock of the Issuer filed by The Quercus Trust, David Gelbaum and Monica Chavez
Gelbaum (the "Reporting Persons") with the Securities and Exchange Commission on
January 28, 2008 (the "Initial Schedule 13D"). Capitalized terms used in this
Amendment No. 1 but not otherwise defined herein have the meanings given to them
in the Initial Schedule 13D.

 This Amendment No. 1 is being made to disclose the acquisition of
additional securities of the Issuer. Except as otherwise set forth herein, this
Amendment No. 1 does not modify any of the information previously reported by
the reporting persons in the Initial Schedule 13D.

Item 5. Interest in Securities of the Issuer

 (a) As of the date of this Amendment No. 1, the Reporting Person
beneficially own 36,803,037 shares of Common Stock, which are held of record by
the Trust.

 (b) The Reporting Persons have shared voting and dispositive power with
respect to 36,803,037 shares of Common Stock. Each of David Gelbaum and Monica
Chavez Gelbaum, acting alone, has the power to exercise voting and investment
control over the shares of Common Stock owned by the Trust.

 (c) Since January 28, 2008, the Trust has purchased shares of Common Stock
in brokered transactions as follows:


 DATE NUMBER OF SHARES PRICE PER SHARE
 ---- ---------------- ---------------
 4/30/2008 1,240,014 $ 0.6000

 The Reporting Persons purchased the above reported 1,240,014 shares of
Common Stock with a purchase price of $0.60 per share in a brokered transaction
from a private seller. In addition, the Reporting Persons entered into a private
transaction with the same seller (the "Private Sale"). Through the Private Sale,
the Reporting Persons acquired a Series A Note with a principal amount of
$2,397,700 for a purchase price of $2,493,608 (the "Series A Note"), a Series A
Warrant to purchase up to 4,347,826 shares of Common Stock for a purchase price
of $999,999.98 (the "Series A Warrant"), and a Series B Warrant to purchase up
to 1,619,815 shares of Common Stock for a purchase price of $421,151.90 (the
"Series B Warrant"). The Series A Note has a conversion price of $0.69 per share
and matures on March 6, 2010. The Series A Warrant has an exercise price of
$1.21 per share and expires on March 6, 2012. The Series B Warrant has an
exercise price of $0.90 per share and expires on March 6, 2012.

 Additionally, on the Initial Schedule 13D, the Reporting Persons
erroneously reported that they were beneficial owners of 22,859,456 shares of
Common Stock, accounting for 20.0% of Common Stock. However, at that time, the
Reporting Persons were beneficial owners of 26,120,454 shares of Common Stock,
accounting for 22.0% of Common Stock.

 (d) Not applicable.

 (e) Not applicable.



 5


Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer

(a) Pursuant to the Power of Attorney filed as Exhibit "B" to Amendment No. 1 to Schedule 13D filed on August 24, 2007 with respect to the issuer Emcore Corp., David Gelbaum has been appointed as Monica Chavez Gelbaum's Attorney-In-Fact.

Item 7. Material to Be Filed as Exhibits

Exhibit A: Agreement Regarding Joint Filing of Schedule 13D.

6

SIGNATURE

After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct and agrees that this statement may be filed jointly with the other undersigned parties.

Dated: May 13, 2008 /S/ DAVID GELBAUM
 ----------------------------------------------
 David Gelbaum, Co-Trustee of The Quercus Trust



 /S/ DAVID GELBAUM, AS ATTORNEY-IN-FACT FOR
 MONICA CHAVEZ GELBAUM
 ----------------------------------------------
 Monica Chavez Gelbaum, Co-Trustee of The
 Quercus Trust



 /S/ DAVID GELBAUM
 ----------------------------------------------
 The Quercus Trust, David Gelbaum, Co-Trustee
 of The Quercus Trust

7

EXHIBIT A

AGREEMENT REGARDING JOINT FILING OF AMENDMETNT NO. 1 TO SCHEDULE 13D

The undersigned agree that the Amendment No. 1 to Schedule 13D with respect to the Common Stock of Solar EnerTech Corp. is a joint filing being made on their behalf.

Dated: May 13, 2008 /S/ DAVID GELBAUM
 ----------------------------------------------
 David Gelbaum, Co-Trustee of The Quercus Trust



 /S/ DAVID GELBAUM, AS ATTORNEY-IN-FACT FOR
 MONICA CHAVEZ GELBAUM
 ----------------------------------------------
 Monica Chavez Gelbaum, Co-Trustee of The
 Quercus Trust



 /S/ DAVID GELBAUM
 ----------------------------------------------
 The Quercus Trust, David Gelbaum, Co-Trustee
 of The Quercus Trust

8
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