How much energy is saved recycling an aluminum can? 210 watt-hours

Recycling one pound of aluminum (33 cans) saves about 7 kilowatt-hours (kWh) of electricity. 

Recycling aluminum saves 90-95 percent of the energy needed to make aluminum from bauxite ore. 

https://www.thoughtco.com/the-benefits-of-aluminum-recycling-1204138

[210 W-h]

Recycling one aluminum beverage can save enough energy to run a 14 watt CFL bulb (60 watt incandescent equivalent) for 20 hours, a computer for 3 hours, or a TV for 2 hours.

https://archive.epa.gov/epawaste/conserve/smm/wastewise/web/html/factoid.html

[280 W-h]

One ton of recycled  aluminum saves14,000 kilowatt hours (Kwh) of energy, 40 barrels of oil, 130. 152.32 million BTU's of energy, and 10 cubic yards of landfill space.

https://lbre.stanford.edu/pssistanford-recycling/frequently-asked-questions/frequently-asked-questions-benefits-recycling

[14 *10E6 W-h * 15g / 10E6g = 210 W-h]