Orders of Magnitude (specific Energy Density) | Orders Magnitude (specific Energy Density)

This is a table of specific energy densities by magnitude. Unless otherwise noted, these values assume standard ambient temperature and pressure.

**List of orders of magnitude for specific energy density**
Order of magnitude J/(kg)	Specific energy density	Storage method
101	1	gravitational potential energy stored by raising any material by 1 meter (near the Earth's surface)
102	2.8	day laborer (for that day)
102	4	heel-strike generator using electrostrictive polymers
103
104
105	2.16	NiMH rechargeable batteries
	6.12	lead acid car batteries
	6.3M	Li-ion watch batteries
107	1.6	wood fuel
	1.7	protein (about 4 nutritional calories per gram)
	1.7	carbohydrates (about 4 nutritional calories per gram)
	2.5	ethanol
	2.9	alcohol (about 7 nutritional calories per gram)
	3.8	fat (about 9 nutritional calories per gram)
	4.4	petrol (gasoline)
108	1.2	hydrogen
1013	8.6	nuclear fission: natural uranium in fast breeder reactor
1014	5.76	nuclear fusion: deuterium-tritium
1016	~8.9876	matter-antimatter annihilation: indeterminate matter and antimatter

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