How to Make Solar Hydrogen Year Round (IMAGE) SolarPACES Caption Annual H2 Production: The turquoise columns show the temperature in the receiver which varies with varying solar energy, and the purple line shows resulting variation in H2 production rate in kilograms per second. The green line shows the oxidizing reactor in the two-step process, where temperatures are more even; ranging from 800 to 1250 K (Kelvin). Credit IMAGE@Alicia Bayon Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.