Energy Storage

Question 1

Purpose of Energy Storage Systems

Answer 1

-Increase share of renewables (>25%)
-Independence from fossil fuels
-

Question 2

Storage System Placement

Answer 2

• Power System Level (Reserve, Balancing)
• Transmission System Level (Frequency Control)
• Distribution System Level (Provision of voltage profiles, support of transmission)
• User Level (Peak Shaving, Cost Reduction)

Question 3

Energy Storage Systems

Answer 3

• Mechanical (PHS, CAES, FES)
• Electrochemical(Sec. Batt, Flow Batteries)
• Chemical (Hydrogen, Fuell Cell, SNG)
• Electrical (DLC, SMES)
• Thermal (Molten Salt, A-CAES)

Question 4

Development Level of Tech.

Answer 4

Present: PHS, Batteries
Short Term: IPHS, Batteries
medium-long Term: APHS, Hydrogen, Advanced Batteries, Thermal Storage