diff --git a/solutions/go/etl/1/etl.go b/solutions/go/etl/1/etl.go
new file mode 100644
index 0000000..f9b33f7
--- /dev/null
+++ b/solutions/go/etl/1/etl.go
@@ -0,0 +1,14 @@
+package etl
+
+import "strings"
+
+func Transform(in map[int][]string) map[string]int {
+    res := make(map[string]int)
+	for point, letters := range in {
+        for _, letter := range letters {
+            res[strings.ToLower(letter)] = point
+        }
+    }
+
+    return res
+}