Darren Evans Assessments is a fast-growing company that provides energy saving assessments and sustainability consultancy services to clients in various industries including architecture, development, public sector, commercial, residential, and materials/manufacturing. They work with clients to determine the best options for improving energy efficiency and sustainability through services like Standard Assessment Procedure, Simplified Building Energy Model, and thermal modeling. Their goal is to provide practical advice and solutions to make sustainability improvements straightforward and cost-effective. They have expertise in various areas like SBEM, EPC, BREEAM, and work to understand their clients' needs to deliver customized services.