Apartment Co., a residential real estate company owning 10 buildings in New York, seeks to improve long-term profitability after recent infrastructure investments. The case explores strategies to reduce utility costs, focusing on energy-efficient lighting and solar panel installation. Candidates must analyze financial data, brainstorm cost-reduction ideas, and evaluate investment options. The case tests profitability analysis, brainstorming skills, and investment decision-making. Key considerations include installation costs, energy savings, and payback periods for both lighting upgrades and solar panels. The recommendation should be data-driven, considering risks and next steps for implementation.