POWER May 2014 - 1

Established 1882 * Vol. 158 * No. 5
May 2014
ON THE COVER
The 64-MW AES Laurel Mountain Storage Array in West Virginia competitively provides
reliability services to utilities across 13 states and the District of Columbia. Courtesy:
Brent Kepner/AES
COVER STORY: ENERGY STORAGE
24 The Year Energy Storage Hit Its Stride
Technology innovations, market need, policy support, and lower prices are all teeing
up energy storage to become a familiar part of grids worldwide. The implications for
variable renewable generation should be obvious, but more extensive use of gridtied
storage could also affect fossil units. For example, certain storage technologies
sited with gas-fired units could improve start-up times, efficiencies, and heat rates.
34 Balancing Renewables with Li-ion Energy Storage
Lithium-ion (Li-ion) remains the predominant battery technology for grid applications,
as it can be scaled for specific uses and deployed in a modular way. Case studies
from three countries demonstrate how Li-ion installations can make the most of
variable renewable generation.
SPECIAL REPORT: OUTAGE MANAGEMENT
38 Critical Path: Getting Your Outage Ducks in a Row
Every power plant experiences routine and unscheduled outages, but not every
plant employs the best planning and execution practices. Especially with leaner,
less-experienced staffs, you can't afford to leave outage success to chance.
FEATURES
FUELS
44 Fuel-Flexible CFBs Add Flexibility to Resource Plans
Fuel quality, fuel availability, and fuel usability (in response to ever-changing regulations)
can vary significantly over the life of a thermal power plant. Those variables
are providing generators around the world with a rationale for using circulating fluidized
bed (CFB) boilers.
RENEWABLES
50 Utility Biomass Use: Turning Over a New Leaf?
The use of biomass has a checkered past, but understanding the challenges and controlling
for them can make biomass use a good move in many scenarios, especially
when cheaper fuels are unavailable or low-carbon generation is a priority.
54 Despite Challenges, India Banks on Renewable Energy
India may be the only country with a ministry for renewable power, but coal still
accounts for 59% of installed capacity. However, unreliable fossil fuel supplies are
keeping the country focused on ever-bigger solar and wind installations.
38
24
44
May 2014 | POWER
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POWER May 2014

Table of Contents for the Digital Edition of POWER May 2014

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POWER May 2014 - Contents
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