Research memoNational Grid plc (NG.L) · LSEMemo of October 12, 2026

National Grid stock forecast

National Grid's weighted price is 1118.86 GBp in October 2027 and 1318.29 GBp in October 2029. It hinges on approvals, delivery and asset recognition.

1164.50
Share price today, GBp
1318.29 (+26 %)
Weighted scenario, October 2029
-8.3%
Real free cash flow yield
11.9x
P/E, next 12 months
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Every number traced to National Grid's filings8 chapters · 17,835 words219 sources cited

Where could National Grid's shares be by October 2029?

The weighted price is 1118.86 GBp in October 2027, 1212.82 GBp in October 2028 and 1318.29 GBp in October 2029. Including dividends, those outcomes represent returns of 0%, 13% and 26% from today’s 1164.50 GBp. By October 2029, the range is wide: 782.89 GBp in the bear case to 1864.75 GBp in the bull case.

Share price in October 2029: our three scenarios (GBp)Today 11.645782.89Bear · 25 % · -20%1404.76Base · 60 % · +34%1864.75Bull · 15 % · +74%
What the shares could be worthGBp per NG.L share at each date; in brackets the return since today's 1164.50, dividends included
CaseProbabilityOctober 2027October 2028October 2029
Bear25 %885.56 (-20 %)834.86 (-20 %)782.89 (-20 %)
Base60 %1157.47 (+4 %)1275.85 (+18 %)1404.76 (+34 %)
Bull15 %1353.21 (+21 %)1590.67 (+45 %)1864.75 (+74 %)
Weighted100 %1118.86 (+0 %)1212.82 (+13 %)1318.29 (+26 %)

What has to go right for National Grid, and what could go wrong?

The starting point is FY2026 adjusted net income of £2,892m, excluding the £489m disposal gain. The record is uneven: adjusted net income fell from £3,100m in FY2024 to £2,615m in FY2025 before recovering. The base case applies 8.5% annual growth. It reaches £3,268m in October 2027 and £3,846m in October 2029. The middle figure is £3,545m. This is consistent with the stated 8–10% EPS ambition, while the £13bn FY2027 investment plan and 10% asset-growth target support the regulated growth thesis. The bear case applies 3% growth, reaching £3,023m and then £3,208m, because negative free cash flow and higher finance costs could delay returns. Its middle figure is £3,113m. The bull case applies 12% growth, reaching £3,427m and £4,363m. Its middle figure is £3,867m, requiring approvals, delivery and asset recognition to outperform together.

How much cash does National Grid really make?

Cash capital spending left free cash flow deeply negative. Treating share-based pay as an economic cost makes “real free cash flow” weaker still, because the award dilutes shareholders even though it is not another cash payment. This deficit does not prove that network investment is uneconomic: NGET’s asset-health programme alone totalled about £1.7 billion across RIIO-T2, the UK transmission price-control period. It does show that dividends and expansion require financing beyond internally generated cash.

Follow the money: real free cash flow£ millions
Mar 2026Mar 2025Mar 2024Mar 2023Mar 2022
Cash from operations7,8296,8086,9396,3435,490
− Capital spending10,5759,3067,4536,8925,544
= Free cash flow-4,823-4,548-2,259-2,134-1,224
− Stock pay4537374838
= Real free cash flow-4,868-4,585-2,296-2,182-1,262
Real free cash flow, % of revenue-27.5%-24.9%-11.6%-10.1%-6.8%

What does an investor pay for National Grid today?

Market value is the shareholders’ claim; enterprise value adds lenders’ claim and subtracts cash. Think of a house bought with a mortgage: the house is the whole asset, but the owner’s equity is what remains after the lender’s claim. At 1164.50p on 12 October 2026, National Grid’s market value was £58,538 million. Enterprise value was £101,572 million. Net debt was £44,160 million at 31 March 2026, measured on a different date and under the company’s own definition.

What an investor pays today£ millions; share price and per share in pence
Today (Oct 12, 2026)
Share price1164.50
Market value (calculated)58,538
Enterprise value (calculated)101,572
P/E, last 12 months (calculated)17.9x
Free cash flow yield (calculated)-8.2%
Real free cash flow yield (calculated)-8.3%
From the full memo · 1. The business

National Grid plc is an energy-infrastructure company: it owns networks that carry electricity and gas, and it earns mainly by charging for dependable access to them. Its cash flow is easier to understand if you separate the regulated networks from the projects around them, then follow who pays, what gets passed through and what gets invested.

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Where these numbers come from

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