This paper examines how infrastructure companies differ from the rest of the economy and in particular whether or not they tend to pay larger and more frequent dividends i.e. whether infrastructure really is a ‘cash cow.’ We find that infrastructure companies exhibit key systematic differences with a sample of ‘matched’ firms that are otherwise comparable in size, leverage, revenue growth or profits. Infrastructure companies are different because they tend to exhibit high asset tangibility, asset illiquidity and asset inflexibility, as well as lower operating leverage, as measured by a range of well-established metrics founds in the academic literature. Finally, we find that infrastructure companies do pay higher (but not more frequent) dividends than other firms and that these higher payout ratios correlate well with the characteristics we have identified. We argue that using these characteristics provides an important robustness check to identify infrastructure assets.