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How to design a hydrogen power plant, part 1: planning the demo

Updated: Jul 28, 2020

These weeks it is scheduled the development of the demo of our hydrogen-based V-Batteries prototype, so we need to start with the beginning: planning. Prior to the development of the prototype we must study and validate on a small scale the hypotheses for our solution, for which we will have to carry out several scientific experiments together with the development of the software.


The following is the outline of the process we want to validate:



This process of valorising renewable energy can be divided into the following parts:

1.- Validation of the energy charging and storage system. In this experiment we will perform measurements on the system of photovoltaic panels, electrolyser and hydrogen and oxygen storage systems, where we will obtain (among other data) those parameters related to the efficiency of the electrolyser and the production of hydrogen and oxygen per kWh used in electrolysis.

2.- Validation of the energy recirculation system. In this second experiment we will validate the energy production and hydrogen consumption of the fuel cell, as well as the recirculation of electrical energy from the photovoltaic and fuel cell installation to the energy recovery system, so that we can quantify the excess amount of energy that is used in the electrolyser. 

3.- Validation of the energy surplus recovery system. In this case we will validate the economic production of the renewable energy recovery system, reaching a recovery figure of €/kWh that will allow to validate the financial viability of the valorisation system. 

For the experiments we will require the following materials:


1x 200 W photovoltaic panel (experiment 1 and 2)

1x micro 200W Wi Fi inverter (experiment 1 and 2)

1x laboratory electrolyser + 120W to 12V power supply (experiment 1 and 2)

1x fuel cell of 50 W (experiment 1 and 2)

1x storage system of 50 liters of H2 at 5 to 20 mbar over atmospheric pressure. Don’t worry about that: at that pressure, 50 liters of hydrogen contain approximately from 150 to 200 Wh, i.e. the energy of about 15 ml of gasoline (experiment 1 and 2).

1x 200Wh emergency battery (experiment 2)

2x gas flow meters (experiment 1)

1x prototype of energy surplus recovery system with capacity to value up to 28 kWh per day (experiment 3)

Safety material, wiring, tubes and other auxiliary materials.

The estimated cost of materials for each experiment is:

- Experiment 1: €680

- Experiment 2: €685 

- Experiment 3: €1,350

Finally, once the three experiments have been performed and approved as successful, we will be able to combine all the parts and use them together to create the demo experiment, which will show the main features of the solution in a reduced scale plant prototype. 

We will be updating the blog with the future developments, so stay on tune!

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