National Grid (NGG) Interest & Investment Income (2009 - 2025)
National Grid (NGG) posted Interest & Investment Income of $280.7 million for Q3 2025, down 7.69% on a QoQ basis from $304.0 million in Q3 2024, and down 7.69% year-over-year from $304.0 million in Q3 2024.
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Analysis
National Grid (NGG) Interest & Investment Income (2009 - 2025) Analysis & Trends
National Grid has reported Interest & Investment Income for 11 years, with the latest figure at $280.7 million in Q3 2025.
- On a quarterly basis, Interest & Investment Income fell 7.69% year-over-year to $280.7 million in Q3 2025; TTM through Sep 2025 was $1.0 billion, a 7.9% increase from a year earlier, with the FY2026 full-year figure at $512.3 million, down 9.61% from the prior year.
- Interest & Investment Income was $280.7 million for Q3 2025 at National Grid, down from $304.0 million in the prior quarter.
- The five-year high for Interest & Investment Income was $312.9 million in Q2 2024, with the low at $144.8 million in Q3 2023.
- Average Interest & Investment Income over 3 years is $249.3 million, with a median of $280.7 million recorded in 2025.
- The sharpest annual moves came in 2024 and 2025: Interest & Investment Income jumped 110.0% in 2024, then retreated 7.69% in 2025.
- Over 3 years, Interest & Investment Income stood at $144.8 million in 2023, then soared by 110.0% to $304.0 million in 2024, then fell by 7.69% to $280.7 million in 2025.
- The last three Interest & Investment Income figures came in at $280.7 million (Q3 2025), $304.0 million (Q3 2024), and $312.9 million (Q2 2024), per Business Quant data.
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Int & Inv Inc (Qtr) |
|---|---|---|---|---|---|
| 1 | Enel Chile | 306.41 Bn | 306.41 Bn | 890.00 Mn | 28.00 Mn |
| 2 | National Grid | 79.91 Bn | 76.14 Bn | - | - |
| 3 | Dominion Energy | 54.94 Bn | 58.84 Bn | 3.50 Bn | 35.00 Mn |
| 4 | Xcel Energy | 44.99 Bn | 42.98 Bn | 3.12 Bn | 105.00 Mn |
| 5 | Wec Energy | 33.53 Bn | 33.88 Bn | 1.45 Bn | - |
| 6 | Ameren | 28.13 Bn | 28.25 Bn | - | - |
| 7 | Fortis | 27.32 Bn | 28.61 Bn | 1.60 Bn | -35.42 Mn |
| 8 | Firstenergy | 25.89 Bn | 27.19 Bn | 2.51 Bn | 52.00 Mn |
| 9 | Hydro One | 21.93 Bn | 21.54 Bn | - | - |
| 10 | Edison International | 21.17 Bn | 20.93 Bn | 3.29 Bn | - |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Sep 30, 2025 | 280.67 Mn |
| Sep 30, 2024 | 304.04 Mn |
| May 23, 2024 | 312.86 Mn |
| Sep 30, 2023 | 144.78 Mn |
| May 18, 2023 | 204.32 Mn |
| Sep 30, 2017 | 31.03 Mn |
| Sep 30, 2016 | 53.65 Mn |
| Sep 30, 2015 | 9.24 Mn |
| Sep 30, 2014 | 3.35 Mn |
| Sep 30, 2013 | 15.43 Mn |
| Sep 30, 2012 | 14.23 Mn |
| Dec 31, 2010 | -1.58 Mn |
| Mar 31, 2009 | 63.90 Bn |
API Access
National Grid Interest & Investment Income API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=interest-and-investment-income&ticker=NGG&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "interest-and-investment-income", "ticker": "NGG", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=interest-and-investment-income&ticker=NGG&period=max&api_key=YOUR_API_KEY");
const data = await res.json();