Open Veils · Answer
How much energy does the moon produce in tidal energy?
The Moon pumps approximately 3.2 terawatts of continuous power into Earth's tidal system — a figure now pinned down by lunar laser ranging and satellite altimetry. Global theoretical tidal stream resources aggregate to around 1,000 TWh per year of extractable potential. This represents a thermodynamic drain on Earth's rotation, slowly lengthening the day. What mainstream energy policy almost never discusses is how vanishingly small a fraction of this flux humanity has bothered to harness.
Evidence
- The total tidal dissipation budget for the Earth-Moon-Sun system sits at 3.7 TW, with 3.2 TW attributable specifically to lunar interaction and 0.5 TW to solar tides.
- A Stanford physics analysis frames the total tidal power as 2.3 terawatts when calculated from the rate of rotational energy loss in Earth's spin, a slightly different accounting that excludes some dissipation pathways.
- Munk and Wunsch's landmark 1998 estimate broke this down further: 3.5 TW lost to ocean tides and 0.2 TW to solid Earth tides.
- Egbert and Ray's 2001 confirmation using space geodesy methods — altimetry, satellite laser ranging, lunar laser ranging — declared the figure 'well-determined.'
- Viktor Schauberger's work on vortical water dynamics suggests that implosive flow geometries could extract far more from tidal and hydraulic gradients than turbine-based systems recover, which presently cap real-world tidal installations at 25–30% of theoretical maximum.