🧮 NGG ROIC Calculation
Understanding ROIC
Return on Invested Capital (ROIC) measures how efficiently a company uses its capital (both debt and equity) to generate profits. For NGG, the current ROIC is 4.65%.
Why ROIC is the Best Quality Metric
Charlie Munger famously said: "Over the long term, it's hard for a stock to earn a much better return than the business which underlies it earns." ROIC is superior to other return metrics because it measures returns on ALL capital employed — both debt and equity. Companies with consistently high ROIC often have durable competitive advantages (moats).
This is not just investing folklore. In Zyberno's survivorship-free audit of 16 fundamental metrics on the complete S&P 500 (2010–2024), ROIC was the single most predictive screen of them all — the widest return spread of any metric tested, stable across both halves of the period — and it out-predicted ROE, the most popular quality metric, roughly seventeen-to-one on identical firms.
ROIC Benchmarks
Excellent: >20%
Indicates a potential economic moat. The company generates exceptional returns on capital, suggesting strong competitive advantages.
Good: 12-20%
Above-average capital efficiency. The company creates value for shareholders by earning returns well above its cost of capital.
Average: 8-12%
Typical for most companies. Returns roughly match the weighted average cost of capital (WACC) for many businesses.
Poor: <8%
Below cost of capital for many companies. May indicate the company is destroying value through poor capital allocation.
ROIC vs ROE vs ROA
ROE: N/A →
Return on Equity only measures returns on shareholder equity. Can be inflated by high leverage. In Zyberno's 16-screen audit, ROIC out-predicted ROE roughly seventeen-to-one on identical firms.
ROA: N/A
Return on Assets measures returns on total assets. Useful but doesn't distinguish between debt and equity financing.
Owner Earnings: N/A →
Buffett's preferred earnings metric. ROIC tells you how efficiently capital is used; Owner Earnings shows the actual cash generated.
Free Cash Flow: $0 →
Actual cash after capex. High ROIC companies typically generate strong free cash flow relative to their invested capital.
What to Look For
- Consistency: Stable or improving ROIC over multiple years
- Above WACC: ROIC should exceed the company's cost of capital (typically 8-10%)
- Industry comparison: Compare to peers — above-average ROIC often signals a moat
- Capital allocation: High ROIC + good reinvestment opportunities = compounding machine
📊 Full NGG Stock Report →
Intrinsic value, margin of safety, DCF valuation, and 250+ metrics.
📈 NGG ROE →
Compare ROIC to Return on Equity and understand the impact of leverage on returns.
💹 NGG P/E Ratio →
Analyze valuation relative to earnings — how the market prices NGG's profitability.
👤 NGG Owner Earnings →
Warren Buffett's preferred measure of true economic earnings available to owners.
💵 NGG Free Cash Flow →
See actual cash generation after capital expenditures.
💰 NGG Net Income →
See the bottom-line profit that drives ROE calculations.
Summary: NGG Capital Efficiency
NATIONAL GRID PLC (NGG) has a ROIC of 4.65%, which Zyberno classifies as average for a Utilities company — within the 3–5% range Zyberno considers typical for regulated utilities where returns are deliberately constrained by regulatory frameworks, with returns roughly matching the cost of capital. Combined with an ROE of N/A and ROA of N/A, Zyberno uses ROIC as its primary measure of capital quality because it accounts for both debt and equity and is harder to inflate with leverage. For complete financial analysis, view the full NGG stock report on Zyberno.
Frequently Asked Questions
What is NGG's current ROIC?
NATIONAL GRID PLC's Return on Invested Capital (ROIC) is 4.65%, measured against the 8% excellent threshold Zyberno applies to Utilities businesses. ROIC measures how efficiently the company generates returns on both debt and equity capital.
Is NGG's ROIC good?
NATIONAL GRID PLC (NGG) has a ROIC of 4.65%, which Zyberno classifies as average for a Utilities company — within the 3–5% range Zyberno considers typical for regulated utilities where returns are deliberately constrained by regulatory frameworks, with returns roughly matching the cost of capital.
What is the difference between ROIC and ROE?
ROIC measures returns on ALL capital (debt + equity), while ROE only measures returns on shareholder equity. NGG's ROIC is 4.65% vs ROE of N/A. ROE can be artificially inflated by high debt levels, making ROIC a more reliable quality metric.
Why do Buffett and Munger focus on ROIC?
Warren Buffett and Charlie Munger focus on ROIC because it measures the true efficiency of capital allocation. High ROIC companies can reinvest profits at attractive rates, creating compounding wealth over time.
📊 Full NGG Stock Report →
See NGG's intrinsic value, margin of safety, DCF valuation, and complete financial analysis with 250+ metrics.
📈 NGG ROE →
Compare to Return on Equity and understand the impact of leverage on returns.
💹 NGG P/E Ratio →
Analyze the price-to-earnings ratio and earnings yield as a valuation metric.
🎯 NGG Earnings Surprise (SUE) →
See whether NGG is beating or missing its own earnings trend — Standardized Unexpected Earnings and post-earnings drift.
👤 NGG Owner Earnings →
Warren Buffett's preferred measure of true economic earnings available to owners.
💰 NGG Net Income →
See the bottom-line profit that drives return calculations.
📊 NGG EPS →
Earnings per share — net income on a per-share basis.