The main impacts of the 4ºC scenario were: • Physical ramifications of climate change: in this scenario we expect extreme weather events of escalating severity and frequency, which could increase disruption to our assets and our customers. This would require investment to ‘harden’ assets and would heighten the safety risk to our field employees. Our approach to physical climate risk is discussed in more detail below. • Lower system visibility: as this scenario sees less coordinated policy and regulation in pursuit of decarbonisation, we would anticipate a greater variety of solutions being deployed across our networks. This could increase overall system costs and reduce visibility over the network, potentially slowing our responsiveness to disruptive events. We do note, however, that a greater number of distributed assets would increase the potential for local balancing, which could mitigate this. • Inequality of access: without carefully designed policy, we believe decarbonisation activities have the potential to leave some sectors of society behind: for example, heat pumps and the energy efficiency upgrades they typically require are currently cost-prohibitive for many. As well as the ethical implications of this, there is a risk to the Group, especially for our US businesses, that a proportion of our customers would struggle to pay their bills.