Eversource EnergyKPI data tables
Eversource Energy operating metrics behind the KPI charts, newest period first (up to 24 periods per chart). Periods use each company's own fiscal labels where the source does; each table names its source.
| Period | Electric | Natural gas | Water (Aquarion) |
|---|---|---|---|
| FY 2025 | 3,489 | 897 | 249 |
| FY 2024 | 3,424 | 901 | 248 |
| FY 2023 | 3,309 | 895 | 241 |
Source: Eversource Energy Form 10-K Item 1 customer counts. 2025 10-K (year ended 31 December 2025): CL&P 1.32 million, NSTAR Electric 1.62 million, PSNH 549,000; NSTAR Gas 306,000, EGMA 335,000, Yankee Gas 256,000; Aquarion 249,000. https://www.sec.gov/Archives/edgar/data/72741/000162828026008461/es-20251231.htm. 2024 10-K: https://www.sec.gov/Archives/edgar/data/72741/000007274125000007/es-20241231.htm. 2023 10-K: https://www.sec.gov/Archives/edgar/data/72741/000007274124000005/es-20231231.htm. Aquarion sale date: Q2 2026 10-Q, https://www.sec.gov/Archives/edgar/data/72741/000162828026051906/es-20260630.htm.
| Period | CL&P (Connecticut) | NSTAR Electric (Massachusetts) | PSNH (New Hampshire) |
|---|---|---|---|
| FY 2025 | 1,320 | 1,620 | 549 |
| FY 2024 | 1,300 | 1,580 | 544 |
| FY 2023 | 1,280 | 1,490 | 539 |
Source: Eversource Energy Form 10-K Item 1, retail franchise electric service customer counts as of 31 December. 2025 10-K: CL&P approximately 1.32 million, NSTAR Electric approximately 1.62 million, PSNH approximately 549,000. https://www.sec.gov/Archives/edgar/data/72741/000162828026008461/es-20251231.htm. 2024 10-K (1.30 million / 1.58 million / 544,000): https://www.sec.gov/Archives/edgar/data/72741/000007274125000007/es-20241231.htm. 2023 10-K (1.28 million / 1.49 million / 539,000): https://www.sec.gov/Archives/edgar/data/72741/000007274124000005/es-20231231.htm.
| Period | NSTAR Gas | EGMA | Yankee Gas |
|---|---|---|---|
| FY 2025 | 69.9 | 56.6 | 61.6 |
| FY 2024 | 69 | 54.8 | 59.5 |
| FY 2023 | 67.1 | 54.2 | 56.4 |
Source: Eversource Energy Form 10-K Item 1, total throughput (sales and transportation) in Bcf. 2025 10-K: NSTAR Gas 69.9, EGMA 56.6, Yankee Gas 61.6. https://www.sec.gov/Archives/edgar/data/72741/000162828026008461/es-20251231.htm. 2024 10-K (69.0 / 54.8 / 59.5): https://www.sec.gov/Archives/edgar/data/72741/000007274125000007/es-20241231.htm. 2023 10-K (67.1 / 54.2 / 56.4): https://www.sec.gov/Archives/edgar/data/72741/000007274124000005/es-20231231.htm.
| Period | Electric Distribution storm costs |
|---|---|
| FY 2025 | 89.2 |
| FY 2024 | 76.8 |
| FY 2023 | 71.1 |
| FY 2022 | 74.4 |
Source: Eversource Energy Form 10-K Note 23 Segment Information, Electric Distribution column, Storm Costs (millions of dollars). 2025 10-K: 2025 $(89.2), 2024 $(76.8), 2023 $(71.1). https://www.sec.gov/Archives/edgar/data/72741/000162828026008461/es-20251231.htm. 2024 10-K 2022 Electric Distribution Storm Costs $(74.4): https://www.sec.gov/Archives/edgar/data/72741/000007274125000007/es-20241231.htm. Q2 2026 10-Q (not plotted): three months ended 30 June 2026 Storm Costs $(11.5); six months $(40.4). https://www.sec.gov/Archives/edgar/data/72741/000162828026051906/es-20260630.htm.
| Period | Overhead | Underground |
|---|---|---|
| FY 2025 | 4,007 | 460 |
| FY 2024 | 3,998 | 459 |
| FY 2023 | 3,992 | 423 |
Source: Eversource Energy Form 10-K Item 2 Properties, Transmission and Distribution System table, Eversource Electric Transmission column (overhead lines and underground lines in circuit miles). 2025 10-K: overhead 4,007, underground 460. https://www.sec.gov/Archives/edgar/data/72741/000162828026008461/es-20251231.htm. 2024 10-K (3,998 / 459): https://www.sec.gov/Archives/edgar/data/72741/000007274125000007/es-20241231.htm. 2023 10-K (3,992 / 423): https://www.sec.gov/Archives/edgar/data/72741/000007274124000005/es-20231231.htm.
| Period | CL&P | NSTAR Electric | PSNH |
|---|---|---|---|
| FY 2025 | 4.6 | 4.4 | 2.3 |
| FY 2024 | 4.4 | 4.4 | 2 |
| FY 2023 | 4.1 | 3.9 | 1.8 |
Source: Eversource Energy Form 10-K Item 1, Transmission Rate Base paragraph (estimated transmission rate base at year-end, including the three electric utilities). 2025 10-K: approximately $11.3 billion (CL&P $4.6 billion, NSTAR Electric $4.4 billion, PSNH $2.3 billion). https://www.sec.gov/Archives/edgar/data/72741/000162828026008461/es-20251231.htm. 2024 10-K: approximately $10.8 billion ($4.4 / $4.4 / $2.0). https://www.sec.gov/Archives/edgar/data/72741/000007274125000007/es-20241231.htm. 2023 10-K: approximately $9.8 billion ($4.1 / $3.9 / $1.8). https://www.sec.gov/Archives/edgar/data/72741/000007274124000005/es-20231231.htm.