Investigate the pros and cons of non-renewable and renewable energy sources. People and places -Future of energy - Renewable and non-renewable energy sources Learning Points Non-renewable energy sources are those that will run out. Renewable energy sources are those that will not run out. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.