Accumulations are stores of exergy and/or carbon, measured in units of joules and grams, respectively. A common example of an accumulation of exergy and carbon is the subterranean natural gas resource base we extract for electricity and heat. Carriers, transformations, and accumulations are linked in a network of exergy and carbon flows. The system generally flows from primary resources to end uses in an alternating sequence of carriers and transformations. For example, a primary resource such as sunlight is converted to an intermediate carrier such as electricity by solar cells (a transformation). The electricity is then used in end-use transformations that serve human needs such as lighting or cooking.

Name Exergy (J) Carbon (g)
Dot Atmospheric Carbon 0.000e+00 8.000e+17
Dot Carbonate Resources 0.000e+00 6.550e+22
Dot Coal Resources 2.700e+23 8.100e+18
Dot Deep Ocean Carbon 0.000e+00 3.720e+19
Dot Earth's Crust Thermal Exergy 1.500e+28 0.000e+00
Dot Exergy Stored in Clouds 2.500e+20 0.000e+00
Dot Exergy Stored in Fresh Water 3.500e+23 0.000e+00
Dot Exergy Stored in Living Plants 3.000e+22 7.500e+17
Dot Gasoline, Diesel, Kerosine Stocks 7.476e+18 1.529e+14
Dot Metal Ore Resources 5.000e+19 0.000e+00
Dot Methane Hydrate Resources 2.000e+23 0.000e+00
Dot Natural Gas Resources 5.000e+22 8.300e+17
Dot Natural Gas Stocks 3.000e+19 4.980e+14
Dot Nuclear Waste Stocks 2.500e+22 0.000e+00
Dot Petroleum Resources 1.100e+23 2.250e+18
Dot Petroleum Stocks 2.289e+19 4.682e+14
Dot Pumped Hydro Storage 3.000e+14 0.000e+00
Dot Soil Carbon 0.000e+00 3.150e+18
Dot Subsurface CO2 Resources 0.000e+00 5.000e+17
Dot Surface Ocean Carbon 0.000e+00 9.430e+17
Dot Tidal Gravitational Exergy 5.300e+18 0.000e+00
Dot Uranium 238 Stocks 1.600e+23 0.000e+00
Dot Uranium Ore Resources 1.000e+24 0.000e+00
Dot Wind Kinetic Exergy 1.000e+21 0.000e+00