Summary and Final Tasks

In this lesson, we looked at very different technologies used to store solar energy. Those technologies differ in physicochemical principles, scale, and impact, and require quite different scientific and engineering background for detailed analysis. In that sense, this material is challenging. At the same time, it is important for solar specialists to be aware of various energy storage options, as well as recent innovations, and to be able to apply those options to specific conditions. Hopefully, this lesson has been a good step in that direction and will motivate you to learn more and to elevate your expertise down the road.

Please complete the following activities to complete this lesson.

**Due for Lesson 9**
Type	Description/Instructions	Deadline
Readings	Complete all necessary reading assigned in this lesson.
Discussion Forum	Discussion Forum "Store or not to store" Read this article, which discusses the feasibility of energy storage for renewable energy systems. Journal article: "The energetic implications of curtailing versus storing solar- and wind-generated electricity" Express your opinion on whether storing extra energy from utility solar systems would be a smart economic solution versus simply producing less. What metrics used in this paper did you find informative in terms of feasibility and suitability of specific storage options for solar and wind farms? Comment on other posts on the forum.	Sunday night
Reading Quiz	Complete the Lesson 9 Quiz.	Wednesday night

References for Lesson 9

Moens and Blake, 2004, Advanced Heat Transfer and Thermal Storage Fluids, Conference Paper NREL/CP-510-37083 January 2005, National Renewable Energy Laboratory.

Wu, B., Redy, R.G., and Rogers, R.D., NOVEL IONIC LIQUID THERMAL STORAGE FOR SOLAR THERMAL ELECTRIC POWER SYSTEMS, Proceedings of Solar Forum 2001 Solar Energy: The Power to Choose April 21-25, 2001, Washington, DC.

Koning, S., Molten Salt Systems Other Applications Link to Solar Power Plants, Bertrams Heatec Inc. Pratteln, Switzerland, 2007.

Solar Reserve, Molten Salt Energy Storage, 2015.

CalFinder, Compressed air the secret to solar energy storage, 2015.

D. Shriver and P. Atkins, Inorganic Chemistry, Freeman, NY, 1999.

Komoto, K., et al., Energy from the Desert, Earthscan 2009.

Bossel, U, Does a hydrogen economy make sense? Proceedings IEEE, v. 94, no. 10, pp. 1826-1837 (2006).