Risk Factors Update Summary

• The company may not be able to obtain the expected benefits from the IIJA and IRA, adding uncertainty to backlog determinations.
• Addition of "or other natural resources" to risk factors. This broadens the scope of potential impacts.
• Inflationary pressures have increased labor, materials, and fuel costs, impacting profitability and cash flows.
• Project delays due to permitting, weather, subcontractors, and governmental factors could impact project margins.
• Inclusion of "related" in risk factors regarding energy efficiency activities. This clarifies the connection.
• Delays in receiving materials for solar projects could affect performance and profitability.
• Increased costs due to supply shortages may negatively affect profitability and cash flows.
• Climate-related risks and evolving ESG expectations may negatively affect business operations and financial results.
• Increase from 78 million to 79 million outstanding shares as of December 31, 2022.
• Potential liabilities from multiemployer pension plans could impact financial condition and liquidity.