Convert Ergs to Gigawatt-Hours
Convert Ergs (erg) to Gigawatt-Hours (GWh) instantly and accurately.
Conversion Formula
GWh = erg × 2.777777778e-20
About Ergs
An erg is the CGS unit of energy - the work done by one dyne through one centimetre - exactly 10⁻⁷ J. Despite SI adoption, the erg persists in astrophysics: the Sun's luminosity is 3.828 × 10³³ erg/s; gamma-ray burst isotropic energies are quoted in units of 10⁵¹ erg ('one foe'). Surface tension of water is 72.8 dyn/cm; the work to create 1 cm² of new water-air interface is 72.8 erg. Earthquake seismic moment M₀ is in dyn·cm = erg; the 2004 Boxing Day earthquake had M₀ ≈ 10²³ J = 10³⁰ erg. 1 erg = 10⁻⁷ J = 624.15 eV.
About Gigawatt-Hours
A gigawatt-hour (GWh) is the energy from 1 GW for one hour - exactly 3.6 TJ. National electricity generation is reported in annual GWh: Ireland ~32,000 GWh/year; France ~496,000 GWh/year. The Hornsea One offshore wind farm (1.12 GW) generates ~4,000 GWh/year. The Bath County Pumped Storage (3 GW, USA) stores ~24 GWh. World total battery storage capacity reached ~1,600 GWh by end-2022. Energy of 1 megaton TNT ≈ 1.162 GWh. 1 GWh = 3.6 TJ = 1,000 MWh = 3.412 × 10⁹ BTU.
Quick Reference Table
| Ergs (erg) | Gigawatt-Hours (GWh) |
|---|---|
| 1 erg | 2.778 × 10-20 GWh |
| 2 erg | 5.556 × 10-20 GWh |
| 5 erg | 1.389 × 10-19 GWh |
| 10 erg | 2.778 × 10-19 GWh |
| 25 erg | 6.944 × 10-19 GWh |
| 50 erg | 1.389 × 10-18 GWh |
| 100 erg | 2.778 × 10-18 GWh |