WooCommerce: Display ONLY on-sale products in Shop

Question

I need to create a products archive page (usually the Shop page in WooCommerce) but displays ONLY the ON SALE<

Answer 1

Create a new page using shortcode [sale_products per_page="12"]

List of available shortcodes and their parameters is here: http://docs.woothemes.com/document/woocommerce-shortcodes/