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Hydrogen, until recently, was considered too expensive to produce and too dangerous to be considered a mainstream fuel source for utility and transportation applications.   The solid hydrogen metal hydride technology being advanced by HES has changed that!

Our system is safe, reliable, efficient & renewable.

The system satisfies California’s SULEV and PZEV tailpipe emission standards. Using and ICE/GENSET for utility applications or an ICE automotive engine, our technology meets the California SULEV and PZEV emission standards which we believe to be the most strict to date.

The data below represents the emissions from a 2005 Toyota Prius electric /gas hybrid converted to run 100% on H2 using the solid hydrogen technology.   Unlike high pressure storage systems that require fueling pressures of over 6000 psi, our system is refueled at a pressure of only 1500 psi.   Reduced fueling pressure enables savings in hydrogen compression costs, resulting in a lower delivered fuel cost.   Shortly after refueling, vehicle operation causes pressure in the vessel to drop from 1500 psi to 300 psi, where it remains until the next refueling.

In the same physical space , our current system will store almost three times as much hydrogen as a 5000 psi  compressed/pressurized tank. The chart below indicates the low emissions from our system using State of California Emissions Standards:

Vehicles

HC
(g/mi.)

CO
(g/mi.)

NOx
(g/mi.)

CO2
(g/mi.)

City Fuel
economy

Highway
Fuel
economy

2005 Ovonic Hydrogen
Hybrid Vehicle

0.001

0.002

0.014

1.6

54-56
mi./kg

50-53
mi./kg

2005 Commercial (Gasoline)
Hybrid Baseline

0.004

0.386

0.004

176.6

52
mi./kg

48
mi./kg

SULEV/PZEV
Standard

0.010

1.0

0.020

na

 

 

SULEV - Super Ultra Low Emission Vehicle
PZEV - Partial Zero Emission Vehicle

HYDROGEN USE AND SAFETY :: CALIFORNIA HYDROGEN HIGHWAY

 

Molecular structure -- hydrogen

Advantages of Metal Hydrides

Hydrogen Storage Comparison

At the same pressure, solid storage solution is 30 times smaller than gaseous H2 storage


ADVANTAGE OF METAL HYDRIDES

Low Pressure Operation :: hydrogen

 
 
HES HYDROGEN ENERGY SYSTEMS, LLC • 12 E EXCHANGE STREET • AKRON, OHIO 44308 • 330.375.0055 • INFO@HESHYDROGEN.COM