Energy content of biofuel (J/kg) or equivalent units. Energy density is the amount of energy stored in a fuel per unit volume, expressed in SI units as joule per litre (J/L) or equivalent units. The table below includes entries for popular substances already used for their energy, or being discussed for such use. The second column shows specific energy, the energy content in megajoules per unit of mass in kilograms, useful in understanding the energy that can be extracted from the fuel. The third column in the table lists energy density, the energy content per liter of volume, which is useful for understanding the
National Modern Energy Holdings Battery Technology. The battery plant manufactures batteries for a producer of electric urban buses but will later deliver to NEVS for the planned electric vehicle based on the Saab 9-3. National Modern Energy Holdings National Modern Energy Holdings Ltd. (NME) is a British Virgin Islands-registered, Hong Kong-based holding company, which owns National Electric Vehicle Sweden (NEVS) together with Japan-based Sun Investment LLC. NEVS acquired the assets of Saab Automobile AB, Saab Automobile Powertrain AB, and Saab Automobile Tools AB from a bankruptcy estate. National Modern Energy Holdings has operations in China, Macau, and Hong Kong. The owner of the holding