The stability of gross and operating margins despite revenue volatility from asset sales suggests that TC Energy's core pipeline and storage operations retain pricing power. Net margin swings, from 17.2% in 2025Q3 to 73.5% in 2024Q4, are likely driven by non-recurring gains or losses, so investors should focus on operating margin as the cleaner measure of earning power. The consistent 50%+ gross margin versus peers implies a competitive advantage in contracted infrastructure, but the opacity of cost lines warrants monitoring for any erosion.

TC Energy's ROIC remains low because its invested capital base is enormous, with net PPE of $73.3B constituting 59% of total assets. The modest returns may reflect the early stages of large projects that have yet to generate full cash flows, or the impact of divestitures that reduced earnings without proportionally shrinking capital. Compared to peers, the gap is structural—midstream assets are capital-intensive, but TC Energy's returns are notably lower, implying either underutilized assets or a portfolio mix with lower-margin segments. Investors should monitor whether new projects, like the Southeast Gateway pipeline, can lift ROIC over time.

The negative CCC indicates that TC Energy collects cash from customers well before paying suppliers, which is a source of float that supports liquidity. However, the extreme DPO of 199 days is unusual for a midstream company and may be inflated by large capital project payables that are not yet due. Asset turnover is extremely low at 0.03, reflecting the revenue base relative to the massive asset base, but this is typical for regulated utilities and pipelines. The efficiency metrics suggest that working capital management is not a primary driver of value; instead, the focus should be on capital deployment and project execution.

TC Energy's leverage metrics appear extreme, but the D/EBITDA figure is distorted by the trailing twelve-month EBITDA that includes the low-revenue 2024Q4 quarter. Normalizing for the divestiture, D/EBITDA would be closer to 5-6x, which is more in line with peers. Still, the rising debt-to-equity and interest coverage below 3x indicate that debt service consumes a significant portion of operating income. The company's investment-grade rating and access to capital markets likely mitigate refinancing risk, but the thin coverage warrants monitoring, especially if interest rates remain elevated. The recent asset sales may have been aimed at deleveraging, but the balance sheet remains stretched.

A current ratio below 1.0 implies that current liabilities exceed current assets, which is common for companies with strong cash flow generation and access to credit lines. However, the thin buffer could be problematic if operating cash flow were to dip unexpectedly. The negative working capital is partly a result of high payables, which are a source of financing, but it also means the company relies on continuous cash generation and refinancing. Given the stable cash flow from contracted assets, the liquidity position appears adequate, but investors should monitor any deterioration in cash conversion or access to credit.