In a medium heavy saucepan, stir together sugar, maple syrup, water, lime peel, and lime juice. Bring to boiling; reduce heat. Simmer, uncovered, about 3 minutes or until sugar is dissolved.
Stir in cranberries. Simmer, uncovered, for 5 minutes, stirring occasionally. Stir in ginger. Simmer, uncovered, about 6 minutes more or until berries have popped and mixture starts to thicken, stirring occasionally. Cool. Makes 12 servings.
Can be made ahead. Prepare sauce as directed; cool. Transfer to an airtight container and chill for up to 3 days. Let stand at room temperature for 30 minutes before serving.