Investor Presentaiton

• • • . • MidAmerican Energy Business Update Actual retail load for nine-months ending September 30, 2021, was 21,330 GWh; a 1,303 GWh (6.5%) increase compared with the same time period last year, primarily due to customer growth, warmer-than-normal summer weather and improved industrial sales MidAmerican's electric rates - 11th lowest in the country along with a high renewable concentration - have been a significant factor in attracting retail load, particularly from data centers and other large customers; sales to MidAmerican's largest customers on individual rates increased 17.5% for the nine-months ended September 30, 2021, over the same period in 2020 MidAmerican's goal is to provide 100% renewable energy to its lowa customers through its GreenAdvantage® program. In 2020, approximately 84% of the electricity provided by MidAmerican to retail customers in Iowa came from renewable energy on an annual basis In October 2021, the IUB approved the extension for 2021-2023 of a depreciation deferral regulatory mechanism originally approved in MidAmerican's 2013 rate case that will result in approximately $50 million lower annual depreciation expense in those years Renewable Development Additional cost-effective wind and solar generation and storage projects continue to be evaluated to maintain and further expand the company's renewable commitment to retail customers 47

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