0000950149-97-002169 S-4/A 1 19971205 NYSE CALPINE CORP 0000916457 4991 770031605 CA 1231 S-4/A 33 333-41261 97733087 50 WEST SAN FERNANDO ST SAN JOSE CA 95113 4089955115 50 W SAN FERNANDO SUITE 500 SAN JOSE CA 95113 S-4/A 1 000095014997002169-001-seq1-s-4-a.txt AMMENDMENT #1 TO REGISTRATION S-4