Energy and environment are the two important factors that are always of concern to the current world in order to sustain our technology and development for the betterment of mankind. The discovery of fossil fuels has energized and accelerated the tremendous industrial developments and the transportation sector. While these developments are always welcome, the impacts of these are that the fossil fuel reserves are being depleted rapidly and have left a deep scar on the environment, diminishing the survival of many plant and animal species with drastic changes in the ecosystem, destroying natural resources that help balance the ecosystem, altering the climate and weather. As man-made activities are at the epicenter for all drastic changes being witnessed in the environment, it is high time that harmony with nature and developmental sustainability needs to be given the highest most priority. To conserve the diminishing fossil fuel reserve and recuperate the environment, green energy technologies are to be developed and established. In this regard, attempts are being made to replace hydrocarbon-based fuel with sustainable sources. Hydrogen is one such cleanest possible element, which has a great potential to be used as an energy carrier. The chapter aims to highlight the production of hydrogen in a greener way from abundantly available natural source, water. Water is a compound consisting of two hydrogen molecules that are bonded to one oxygen molecule. When one water molecule is split by breaking the bond between them, it liberates two hydrogen molecules and one oxygen. Thermodynamically, water-splitting reaction is endothermic as energy is needed to break the strong covalent bond between the hydrogen and oxygen molecules. Electrolyzer, which is currently used for this reaction, uses electricity for the energy needed and, therefore, is an energy-intensive system. In order to develop a greener synthesis method, the chapter focuses on the use of biophotolysis method to generate hydrogen gas by splitting water to liberate hydrogen gas and the potential of solar thermal concentrators and heat transfer fluids to harness the solar energy to drive the process, so as to find a reliable solution through means of renewable resources.