A new generation of Belt-Integrated Starter Generators (B-ISG)) have been developed by powertrain engineering consultancy Integral Powertrain. The system solves the cost-benefit issues that have slowed the uptake of existing B-ISG technologies by providing starting refinement equivalent to today's very best systems. These run alongside additional benefits such as powering the air-conditioning system while the engine is stopped and reducing losses whilst the engine is running.