UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

x

Rule 13d-1(c)

o

Rule 13d-1(d)

1

Names of Reporting Persons
Yardi Systems, Inc.

2

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

3

SEC Use Only

4

Citizenship or Place of Organization
California

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5

Sole Voting Power
-0-

6

Shared Voting Power
2,340,000

7

Sole Dispositive Power
-0-

8

Shared Dispositive Power
2,340,000

9

Aggregate Amount Beneficially Owned by Each Reporting Person
2,340,000 shares

10

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  x

11

Percent of Class Represented by Amount in Row (9)
7.6%

12

Type of Reporting Person (See Instructions)
CO

1

Names of Reporting Persons
Anant Yardi

2

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

3

SEC Use Only

4

Citizenship or Place of Organization
United States of America

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5

Sole Voting Power
260,000

6

Shared Voting Power
2,340,000

7

Sole Dispositive Power
260,000

8

Shared Dispositive Power
2,340,000

9

Aggregate Amount Beneficially Owned by Each Reporting Person
2,600,000 shares

10

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11

Percent of Class Represented by Amount in Row (9)
8.4%

12

Type of Reporting Person (See Instructions)
IN

Item 1 (a).

Name of Issuer:
EnerNOC, Inc.

Item 1 (b).

Address of Issuer’s Principal Executive Offices:
One Marina Park Drive, Suite 400, Boston, MA 02210.

Item 2 (a).

Name of Person Filing:
Yardi Systems, Inc., a California Corporation (“Yardi Systems”) and Anant Yardi (collectively, the “Reporting Persons”).

Item 2 (b).

Address of Principal Business Office or, if none, Residence:
430 South Fairview Avenue, Santa Barbara, California 93117.

Item 2 (c).

Citizenship:
Yardi Systems, Inc. is a California corporation and Anant Yardi is a citizen of the United States of America.

Item 2 (d).

Title of Class of Securities:
Common Stock, $.001 par value.

Item 2 (e).

CUSIP Number:
292764107

Item 3.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

o

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);

(b)

o

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)

o

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);

(d)

o

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

(e)

o

An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)

o

An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)

o

A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);

(h)

o

A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

o

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

o

A non-U.S. institution, in accordance with § 240.13d-1(b)(1)(ii)(J);

(k)

o

Group, in accordance with § 240.13d–1(b)(1)(ii)(K).

Item 4.

Ownership

(a)

Amount beneficially owned:   

See Row 9 of the cover page for each of the Filing Persons.  Each Filing Person disclaims beneficial ownership with respect to these shares except to the extent of such Filing Person’s pecuniary interest therein.  Yardi Systems, Inc. disclaims beneficial ownership of the 260,000 shares owned by Mr. Yardi.

(b)

Percent of class:   

See Row 11 of the cover page for each of the Filing Persons.

(c)

Number of shares as to which such person has:

(i)

Sole power to vote or to direct the vote:   

See Row 5 of the cover page for each of the Filing Persons.

(ii)

Shared power to vote or to direct the vote.    

See Row 6 of the cover page for each of the Filing Persons.

(iii)

Sole power to dispose or to direct the disposition of:   

See Row 7 of the cover page for each of the Filing Persons.

(iv)

Shared power to dispose or to direct the disposition of:   

See Row 8 of the cover page for each of the Filing Persons.

Item 5.

Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following   o.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person

Not applicable.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person

Not applicable.

Item 8.

Identification and Classification of Members of the Group

Not applicable.

Item 9.

Notice of Dissolution of Group

Not applicable.

Item 10.

Certifications.

Not Applicable.

Dated: December 13, 2016

YARDI SYSTEMS, INC.

By:

/s/ Anant Yardi

Name:

Anant Yardi

Title:

Chief Executive Officer

/s/ Anant Yardi

Anant Yardi