Energy Storage

In:

Energy Storage

The Commercial World of Energy Storage: A Review of Operating Facilities (under construction or planned)
Septimus van der Linden Principal Brulin Associates
1st Annual Conference of the Energy Storage Council March 3, 2003 Houston, TX

AGENDA
• INTRODUCTION • TECHNOLOGIES • PROJECTS • FUTURE DEVELOPMENTS • CONCLUSIONS

Motivation for Electrical Energy Storage
Price of Electricity

Power Generation

Energy Storage

Time

- Make Use of Volatile Electricity Prices -

INTRODUCTION
• Electricity! 3rd Largest Business in the USA $300 billion/per annum. • Demand for Electricity is seldom constant over time. • Excess generation during low demand periods - can be stored. • Stored Energy can provide Electricity during high demand. • Help reduce power system loads. • Improve Efficiency and Reliability. • Make better use of efficient Baseload generation. • Allow use of Renewable Energy technologies.

TECHNOLOGIES
• • • • Batteries Compressed Air Energy Storage (CAES) Flywheels Pumped Hydro Storage

Two Main Categories: • Bulk Energy Storage
– CAES-PHS

• Distributed Energy Storage – Batteries-Flywheels-Other (capacitors)

PROJECTS

• OPERATING • UNDER CONSTRUCTION • PLANNED

PROJECTS OPERATING
• Bulk Energy Storage • PHS (Pumped Hydro) - First introduced circa 1904 in Swiss Alps.
– 100,000 MW Europe, Asia & Latin America. – 21,000 MW Japan. – 18,900 MW in USA. (Installed 1970-1990)

• CAES (Compressed Air Energy Storage)
– Two Highly Successful Plants in Operation

• E.ON (Germany) 290 MW Huntorf Facility • Alabama Electric Cooperative (USA) 110MW McIntosh Facility

PUMPED HYDRO STORAGE (PHS)

Ogelthorpe Power - Rocky Mountain
– 848 MW from 3 units – Project Stopped in 1984 – Project purchased in Mid-80’s – Project completed 1995 – 1000 Acre/Ft. Reservoir

OPERATING MODE
• Daily Cycling
– 7.5 Hours of Generation – 8.25 Hours of Pumping 6360 MW/Hrs 7466 MW/Hrs

• Operating Mode
– Summer - -Night time pumping-Daily...

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