Exhibit 99.1

Joint Filer Information

Name of Joint Filer:	David Gallo
Address of Joint Filer:	c/o Valinor Management L.P.
	510 Madison Avenue, 25th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	NextDecade Corporation [NEXT]
Date of Earliest Transaction to be Reported (Month/Day/Year):	August 5, 2021
Designated Filer:	Valinor Management L.P.

Signature:
/s/ David Gallo
Name:	David Gallo
August 9, 2021
Date

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Exhibit 99.1

Joint Filer Information

Name of Joint Filer:	Valinor Associates, LLC
Address of Joint Filer:	510 Madison Avenue, 25th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	NextDecade Corporation [NEXT]
Date of Earliest Transaction to be Reported (Month/Day/Year):	August 5, 2021
Designated Filer:	Valinor Management L.P.

Signature:
Valinor Associates, LLC
/s/ David Gallo
Name:	David Gallo
Title:	Managing Partner
August 9, 2021
Date

Page 2 of 3

Exhibit 99.1

Joint Filer Information

Name of Joint Filer:	Valinor Management, L.P.
Address of Joint Filer:	c/o Valinor Management L.P.
	510 Madison Avenue, 25th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	NextDecade Corporation [NEXT]
Date of Earliest Transaction to be Reported:	August 5, 2021
Designated Filer:	Valinor Management L.P.

Signature:
Valinor Management, L.P.
/s/ David Gallo
Name:	David Gallo
Title:	Managing Partner
August 9, 2021
Date

Page 3 of 3