diff --git a/technology/sky130/tech/gds_lib/sky130_custom_cell.gds b/technology/sky130/tech/gds_lib/sky130_custom_cell.gds
new file mode 100644
index 00000000..0605826f
Binary files /dev/null and b/technology/sky130/tech/gds_lib/sky130_custom_cell.gds differ
diff --git a/technology/sky130/tech/gds_lib/sky130_custom_dummy.gds b/technology/sky130/tech/gds_lib/sky130_custom_dummy.gds
new file mode 100644
index 00000000..91b7cbc9
Binary files /dev/null and b/technology/sky130/tech/gds_lib/sky130_custom_dummy.gds differ
diff --git a/technology/sky130/tech/gds_lib/sky130_custom_replica.gds b/technology/sky130/tech/gds_lib/sky130_custom_replica.gds
new file mode 100644
index 00000000..8486c3be
Binary files /dev/null and b/technology/sky130/tech/gds_lib/sky130_custom_replica.gds differ
diff --git a/technology/sky130/tech/sp_lib/sky130_custom_cell.sp b/technology/sky130/tech/sp_lib/sky130_custom_cell.sp
new file mode 100644
index 00000000..5aeb51df
--- /dev/null
+++ b/technology/sky130/tech/sp_lib/sky130_custom_cell.sp
@@ -0,0 +1,12 @@
+* SPICE3 file created from sky130_custom_cell.ext - technology: sky130A
+
+.subckt sky130_custom_cell BL BR WL VPWR VGND
+X1 VGND Q Qbar VGND sky130_fd_pr__nfet_01v8 ad=0.09795 pd=0.915 as=0.0777 ps=0.79 w=0.42 l=0.15
+X3 VPWR Q Qbar VPWR sky130_fd_pr__pfet_01v8 ad=0.0882 pd=0.84 as=0.1197 ps=1.41 w=0.42 l=0.15
+X4 Q Qbar VPWR VPWR sky130_fd_pr__pfet_01v8 ad=0.1218 pd=1.42 as=0.0882 ps=0.84 w=0.42 l=0.15
+X5 Q Qbar VGND VGND sky130_fd_pr__nfet_01v8 ad=0.0756 pd=0.78 as=0.09795 ps=0.915 w=0.42 l=0.15
+
+X0 BL WL Q VGND sky130_fd_pr__nfet_01v8 ad=0.1428 pd=1.52 as=0.0756 ps=0.78 w=0.42 l=0.15
+X2 Qbar WL BR VGND sky130_fd_pr__nfet_01v8 ad=0.0777 pd=0.79 as=0.1218 ps=1.42 w=0.42 l=0.15
+
+.ends
diff --git a/technology/sky130/tech/sp_lib/sky130_custom_dummy.sp b/technology/sky130/tech/sp_lib/sky130_custom_dummy.sp
new file mode 100644
index 00000000..0d2566b5
--- /dev/null
+++ b/technology/sky130/tech/sp_lib/sky130_custom_dummy.sp
@@ -0,0 +1,10 @@
+* SPICE3 file created from sky130_custom_dummy.ext - technology: sky130A
+
+.subckt sky130_custom_dummy BL BR WL VPWR VGND
+X0 a_290_377# a_30_347# VPWR VPWR sky130_fd_pr__pfet_01v8 ad=0.1218 pd=1.42 as=0.0882 ps=0.84 w=0.42 l=0.15
+X1 a_56_159# WL BR VGND sky130_fd_pr__nfet_01v8 ad=0.0777 pd=0.79 as=0.1218 ps=1.42 w=0.42 l=0.15
+X2 a_56_377# a_30_347# VGND VGND sky130_fd_pr__nfet_01v8 ad=0.0756 pd=0.78 as=0.09795 ps=0.915 w=0.42 l=0.15
+X3 VPWR a_30_233# a_290_176# VPWR sky130_fd_pr__pfet_01v8 ad=0.0882 pd=0.84 as=0.1197 ps=1.41 w=0.42 l=0.15
+X4 VGND a_30_233# a_56_159# VGND sky130_fd_pr__nfet_01v8 ad=0.09795 pd=0.915 as=0.0777 ps=0.79 w=0.42 l=0.15
+X5 BL WL a_56_377# VGND sky130_fd_pr__nfet_01v8 ad=0.1428 pd=1.52 as=0.0756 ps=0.78 w=0.42 l=0.15
+.ends
diff --git a/technology/sky130/tech/sp_lib/sky130_custom_replica.sp b/technology/sky130/tech/sp_lib/sky130_custom_replica.sp
new file mode 100644
index 00000000..21b0d9e4
--- /dev/null
+++ b/technology/sky130/tech/sp_lib/sky130_custom_replica.sp
@@ -0,0 +1,10 @@
+* SPICE3 file created from sky130_custom_replica.ext - technology: sky130A
+
+.subckt sky130_custom_replica BL BR WL VPWR VGND
+X0 BL WL Q VGND sky130_fd_pr__nfet_01v8 ad=0.1428 pd=1.52 as=0.0756 ps=0.78 w=0.42 l=0.15
+X1 VGND Q VPWR VGND sky130_fd_pr__nfet_01v8 ad=0.09795 pd=0.915 as=0.0777 ps=0.79 w=0.42 l=0.15
+X2 VPWR WL BR VGND sky130_fd_pr__nfet_01v8 ad=0.0777 pd=0.79 as=0.1218 ps=1.42 w=0.42 l=0.15
+X3 VPWR Q VPWR VPWR sky130_fd_pr__pfet_01v8 ad=0.0882 pd=0.84 as=0.2961 ps=3.09 w=0.42 l=0.15
+X4 Q VPWR VPWR VPWR sky130_fd_pr__pfet_01v8 ad=0.1218 pd=1.42 as=0.0882 ps=0.84 w=0.42 l=0.15
+X5 Q VPWR VGND VGND sky130_fd_pr__nfet_01v8 ad=0.0756 pd=0.78 as=0.09795 ps=0.915 w=0.42 l=0.15
+.ends