Convert Electrical Horsepower to Terawatts
Convert Electrical Horsepower (hp(E)) to Terawatts (TW) instantly and accurately.
Conversion Formula
TW = hp(E) × 7.460000000e-10
About Electrical Horsepower
The electrical horsepower (hp(E)) is defined as exactly 746 W - the US NEMA rounding used on electric motor nameplates. It differs from mechanical hp (745.7 W) by only 0.04%. Every NEMA-rated motor in the US carries a horsepower nameplate: a '5 hp motor' delivers 5 × 746 = 3,730 W. NEC motor branch-circuit sizing tables, overload relay selection, and starter ratings are all based on hp(E). Despite global kW adoption, US industrial motor infrastructure remains standardised in electrical horsepower. 1 hp(E) = 746 W.
About Terawatts
A terawatt (TW) is 10¹² W. All of human civilisation consumes ~17-18 TW (electricity + heat + transport combined); global electricity generation alone is ~9 TW. Solar irradiance intercepted by Earth is ~174,000 TW; photosynthesis captures ~130 TW. The National Ignition Facility (NIF) fusion laser produces pulses of ~500 TW lasting nanoseconds. High-power laser facilities for nuclear physics and ICF research routinely exceed 1 TW in ultrashort pulse regimes. 1 TW = 10¹² W.
Quick Reference Table
| Electrical Horsepower (hp(E)) | Terawatts (TW) |
|---|---|
| 1 hp(E) | 7.46 × 10-10 TW |
| 2 hp(E) | 1.492 × 10-9 TW |
| 5 hp(E) | 3.73 × 10-9 TW |
| 10 hp(E) | 7.46 × 10-9 TW |
| 25 hp(E) | 1.865 × 10-8 TW |
| 50 hp(E) | 3.73 × 10-8 TW |
| 100 hp(E) | 7.46 × 10-8 TW |