National Grid plc (NG.L): analysis and signal as of September 4, 2026
In short
On September 4, 2026, the signal issued for National Grid plc is weak with a vote of 3/3. The main reason is the absence of a verifiable margin of safety, since the PER and the dividend yield could not be confirmed in real time.
- Current signal
- weak (vote 3/3)
- Deterministic score
- -5.0 → signal expected by the scale : no signal (September 10, 2026)
- Layers
- fundamentals : positive, price : positive, risks : neutral
Triggered rules
| Rule | Weight |
|---|---|
| penalizes a high bankruptcy risk (Altman Z-Score in distress zone, < 1,8) | -3.0 |
| penalizes an asset whose net debt/EBITDA exceeds the threshold, and the use of leverage (margin/lombard) | -2.5 |
| moderately favors a positive 12-1 month momentum (tailwind), BUT guardrail: costly rotation, long-term reversal, momentum crashes, a conviction signal, not a rotation trigger | +0.5 |
Thesis
National Grid plc is a British regulated operator structurally exposed to electrification. The debt of 45 to 50 billion pounds sterling and the investment program of 60 billion pounds sterling for 2025-2030 create a lasting sensitivity to Gilts, while long-term British interest rates remain under pressure. The 10-2 slope stands at +0,43 points in the United States and at +0,48 points in the euro zone. The stock does not appear cheap in the classic value analysis sense, because the PER and the dividend yield are not confirmed in real time. The technical configuration lies below the 50- and 200-session moving averages.
Bull case
The main bullish argument relies on the structural electrification theme and on Ofgem's regulated framework with the RIIO-T3 and ED3 periods, which provide visibility on the allowed revenue for five years. Dividends paid by National Grid to a French resident are not subject to any withholding tax in the United Kingdom. Taxation is limited to the single flat levy of 31,4 %, without double taxation.
Bear case
The main bearish argument rests on a very high level of indebtedness, with 45 to 50 billion pounds sterling of debt, i.e. Around 5 to 6 times probable EBITDA, while the investment program reaches 60 billion pounds sterling over 2025-2030. This structure makes the stock highly sensitive to long-term British interest rates in a macroeconomic environment unfavorable to rate-sensitive assets. The price remains below the 50- and 200-session moving averages. No bullish catalyst appears before the BCE meeting on September 10 and the CLARITY vote on September 15.
Scenarios
Bull scenario with a probability of 25 %: range 1280-1300 GBp, i.e. +11 % to +13 %, if RIIO-T3 confirms a high WACC and long-term British interest rates rebound. Central scenario with a probability of 50 %: range 1100-1180 GBp, stabilization of the value. Bear scenario with a probability of 25 %: range 950-1000 GBp, i.e. -15 % to -17 %, if an upward shock in Gilts occurs after the BCE or if the CLARITY vote proves restrictive.
Risks
The main risk focuses on the balance sheet's sensitivity to long-term British interest rates. The debt of 45 to 50 billion pounds sterling and the investment program of 60 billion pounds sterling over 2025-2030 expose National Grid to an increase in Gilt yields. The stock trades below the 50- and 200-session moving averages, and no bullish catalyst appears before the BCE meeting on September 10 and the CLARITY vote on September 15.
Signal history (last 12 months)
| Date | Signal | New fact |
|---|---|---|
| weak (3/3) | unchanged: no new quantified fact since the last verdict, external sources remain inaccessible, and the three layers of analysis converge toward the same prudent synthesis. |
Frequently asked questions
Why is National Grid sensitive to long-term British interest rates?
National Grid carries a debt of 45 to 50 billion pounds sterling, i.e. Around 5 to 6 times probable EBITDA. Its investment program of 60 billion pounds sterling over 2025-2030 maintains this level of indebtedness. Gilts directly influence the financing cost of the regulated operator, which explains the stock's sensitivity to changes in long-term British interest rates.
What are the next key dates identified for National Grid?
The European Central Bank meeting is held on September 10, 2026. The CLARITY vote is scheduled for September 15, 2026. These two key dates constitute points of vigilance for a rate-sensitive asset, especially given the debt of 45 to 50 billion pounds sterling.
Why was the signal of September 4, 2026 weak while the vote is unanimous?
The weak signal stems from a prudent analysis and not from a rejection of the thesis. The three layers of analysis produce the same conclusion. The PER and the dividend yield are not confirmed by the data available in real time, which prevents a margin of safety from being validated. The high debt and the price below the 50- and 200-session moving averages reinforce prudence. The 3/3 vote expresses agreement on this reading.
Is National Grid's dividend favorable for a French resident?
According to the analysis, dividends paid by National Grid to a French resident are not subject to any withholding tax in the United Kingdom. The applicable taxation is the single flat levy of 31,4 %, without double taxation. This aspect constitutes a bullish argument, but it does not by itself compensate for the lack of real-time confirmation of the PER and the dividend yield.
Sources
No official filing is attached to this stock in the database to date. The figures quoted above come from an automated arbitration: they have not been re-checked one by one.
Automated AI analysis: limitations and transparency
- This content is an automated analysis produced using artificial intelligence. Personal analysis for information purposes — no personalised investment advice. MMR content consists of general research. It does not take account of your financial circumstances, objectives or risk tolerance. Data, analyses and results, including those produced using artificial intelligence, may contain errors, be incomplete or become outdated. No return or outcome is guaranteed. All investments carry a risk of partial or total loss of capital. Past performance and simulations do not predict future results. Before making any decision, check information against original sources and, where necessary, consult an authorised professional. You remain responsible for your investment decisions. This notice does not exclude or limit any liability that cannot legally be excluded or limited.
- Tool and analysis: QDNA, Aurélien Ambert.
- Analysis (arbitration) completed on September 4, 2026; this page was completed on September 5, 2026 at 19:08 (UTC).
- Interests: no position in the stock analysed (NG.L) is recorded in the data consulted on (UTC). This does not confirm the absence of holdings or other interests. The situation at the analysis publication date has not been reconstructed.
- This declaration covers only recorded positions in this stock; it is not an exhaustive verification of other interests or remuneration.
- Methodology: analysis chain, score formula and scale described on the public methodology page.
- Analysis horizon: 2035.
See also
- Neighbouring stock in the same sector: Constellation Energy Corp (AJOUT propose hors univers initial) (CEG)
- All analysed stocks
- Public methodology