Common Contracts

FIRST SUPPLEMENTAL INDENTURE

First Supplemental Indenture • April 29th, 2011 • Calpine Corp • Electric services • New York

• Contract Type
  First Supplemental Indenture
• Filed
  April 29th, 2011
• Company
  Calpine Corp
• Industry
  Electric services
• Jurisdiction
  New York

First Supplemental Indenture (this “Supplemental Indenture”), dated as of April 26, 2011, among each of New Development Holdings, LLC, Calpine Mid-Atlantic Energy, LLC, Calpine Mid-Atlantic Operating, LLC, Calpine Bethlehem, LLC, Calpine New Jersey Generation, LLC, Calpine Mid-Atlantic Generation, LLC, Calpine Solar, LLC, Calpine Vineland Solar, LLC and Calpine Mid-Atlantic Marketing, LLC (collectively, the “Guaranteeing Subsidiaries”), each a subsidiary of Calpine Corporation, a Delaware corporation (the “Company”), the Company, each of the guarantors party to the Indenture (as defined below) (the “Existing Guarantors”) and Wilmington Trust Company, as trustee under the Indenture referred to below (the “Trustee”).

FIRST SUPPLEMENTAL INDENTURE

First Supplemental Indenture • April 29th, 2011 • Calpine Corp • Electric services • New York

• Contract Type
  First Supplemental Indenture
• Filed
  April 29th, 2011
• Company
  Calpine Corp
• Industry
  Electric services
• Jurisdiction
  New York

First Supplemental Indenture (this “Supplemental Indenture”), dated as of April 26, 2011, among each of New Development Holdings, LLC, Calpine Mid-Atlantic Energy, LLC, Calpine Mid-Atlantic Operating, LLC, Calpine Bethlehem, LLC, Calpine New Jersey Generation, LLC, Calpine Mid-Atlantic Generation, LLC, Calpine Solar, LLC, Calpine Vineland Solar, LLC and Calpine Mid-Atlantic Marketing, LLC (collectively, the “Guaranteeing Subsidiaries”), each a subsidiary of Calpine Corporation, a Delaware corporation (the “Company”), the Company, each of the guarantors party to the Indenture (as defined below) (the “Existing Guarantors”) and Wilmington Trust Company, as trustee under the Indenture referred to below (the “Trustee”).

FIRST SUPPLEMENTAL INDENTURE

First Supplemental Indenture • April 29th, 2011 • Calpine Corp • Electric services • New York

• Contract Type
  First Supplemental Indenture
• Filed
  April 29th, 2011
• Company
  Calpine Corp
• Industry
  Electric services
• Jurisdiction
  New York

First Supplemental Indenture (this “Supplemental Indenture”), dated as of April 26, 2011, among each of New Development Holdings, LLC, Calpine Mid-Atlantic Energy, LLC, Calpine Mid-Atlantic Operating, LLC, Calpine Bethlehem, LLC, Calpine New Jersey Generation, LLC, Calpine Mid-Atlantic Generation, LLC, Calpine Solar, LLC, Calpine Vineland Solar, LLC and Calpine Mid-Atlantic Marketing, LLC (collectively, the “Guaranteeing Subsidiaries”), each a subsidiary of Calpine Corporation, a Delaware corporation (the “Company”), the Company, each of the guarantors party to the Indenture (as defined below) (the “Existing Guarantors”) and Wilmington Trust Company, as trustee under the Indenture referred to below (the “Trustee”).

FIRST SUPPLEMENTAL INDENTURE

First Supplemental Indenture • April 29th, 2011 • Calpine Corp • Electric services • New York

• Contract Type
  First Supplemental Indenture
• Filed
  April 29th, 2011
• Company
  Calpine Corp
• Industry
  Electric services
• Jurisdiction
  New York

First Supplemental Indenture (this “Supplemental Indenture”), dated as of April 26, 2011, among each of New Development Holdings, LLC, Calpine Mid-Atlantic Energy, LLC, Calpine Mid-Atlantic Operating, LLC, Calpine Bethlehem, LLC, Calpine New Jersey Generation, LLC, Calpine Mid-Atlantic Generation, LLC, Calpine Solar, LLC, Calpine Vineland Solar, LLC and Calpine Mid-Atlantic Marketing, LLC (collectively, the “Guaranteeing Subsidiaries”), each a subsidiary of Calpine Corporation, a Delaware corporation (the “Company”), the Company, each of the guarantors party to the Indenture (as defined below) (the “Existing Guarantors”) and Wilmington Trust Company, as trustee under the Indenture referred to below (the “Trustee”).

FIRST SUPPLEMENTAL INDENTURE

First Supplemental Indenture • April 29th, 2011 • Calpine Corp • Electric services • New York

• Contract Type
  First Supplemental Indenture
• Filed
  April 29th, 2011
• Company
  Calpine Corp
• Industry
  Electric services
• Jurisdiction
  New York

First Supplemental Indenture (this “Supplemental Indenture”), dated as of April 26, 2011, among each of New Development Holdings, LLC, Calpine Mid-Atlantic Energy, LLC, Calpine Mid-Atlantic Operating, LLC, Calpine Bethlehem, LLC, Calpine New Jersey Generation, LLC, Calpine Mid-Atlantic Generation, LLC, Calpine Solar, LLC, Calpine Vineland Solar, LLC and Calpine Mid-Atlantic Marketing, LLC (collectively, the “Guaranteeing Subsidiaries”), each a subsidiary of Calpine Corporation, a Delaware corporation (the “Company”), the Company, each of the guarantors party to the Indenture (as defined below) (the “Existing Guarantors”) and Wilmington Trust Company, as trustee under the Indenture referred to below (the “Trustee”).