A utility function measures a consumer’s preference and satisfaction with different goods or services. As part of rational choice theory, it helps economists analyze how consumers make decisions to ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

The total addressable market (TAM) represents the total revenue opportunity that's available for a product or service, assuming it achieves 100% market share. Calculating the TAM allows investors to ...

Analysis finds that since January 2025, more than 108 million electric utility customers and nearly 49 million natural gas ...