Convert Exawatts to Electrical Horsepower
Convert Exawatts (EW) to Electrical Horsepower (hp(E)) instantly and accurately.
Conversion Formula
hp(E) = EW × 1.340482574e+15
About Exawatts
An exawatt (EW) is 10¹⁸ W. The Sun's total luminosity is 3.828 × 10²⁶ W = 3.828 × 10⁸ EW. Earth intercepts ~0.174 EW of solar power. Gamma-ray burst peak luminosities reach 10⁶-10¹ EW, making them the most powerful transients in the universe. Soft gamma-repeater (magnetar) giant flares briefly reach ~10⁵ EW. Proposed multi-exawatt laser projects (IZEST initiative) aim to compress kilojoules into attosecond pulses for QED vacuum physics. Global human civilisation consumes ~1.8 × 10⁻² EW (18 TW). 1 EW = 10¹⁸ W.
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.
Quick Reference Table
| Exawatts (EW) | Electrical Horsepower (hp(E)) |
|---|---|
| 1 EW | 1.34 × 1015 hp(E) |
| 2 EW | 2.681 × 1015 hp(E) |
| 5 EW | 6.702 × 1015 hp(E) |
| 10 EW | 1.34 × 1016 hp(E) |
| 25 EW | 3.351 × 1016 hp(E) |
| 50 EW | 6.702 × 1016 hp(E) |
| 100 EW | 1.34 × 1017 hp(E) |