ISO Launches Renewable Power Web Tools on Earth Day

Gives the Public Access to Key Data About Environmentally-Friendly Electricity
FOLSOM, Calif.--(Business Wire)--
How green is the grid? As of today, Earth Day, the public can view the level of
renewable power that is helping keep the lights on. The California Independent
System Operator Corporation (ISO) opened access to the data via two web-based
tools that make clean, green energy production transparent on an hourly and
daily basis.

Today`s Wind provides an hour-by-hour chart showing the output of California`s
major wind resource areas. It breaks down wind`s contribution to the grid at any
given hour in the day. To access, go to www.caiso.com and click on Today`s
Outlook, which gives the real-time snapshot of the current supply and demand of
power.

Renewables Watch is a look back at the total renewable power output from the day
before. It captures the megawatts produced from wind, solar, biomass, biogas,
geothermal and small hydroelectricity. The daily report offers a comprehensive
look at the diverse resource mix in California and charts output over the course
of the day, hour-by-hour.

"This type of data has been invaluable to the ISO as we integrate more renewable
resources into grid and market operations," said ISO Vice President of Policy
and Client Services Karen Edson. "We`re making this data public so people can
see the significant and growing role renewable resources are playing in
California."

California ISO Media Hotline |888.516.6397
151 Blue Ravine Road | Folsom, California 95630 | www.caiso.com
Follow us on Twitter | http://twitter.com/CalifornialSO

The California ISO operates the state`s wholesale transmission grid, providing
open and non-discriminatory access supported by a competitive energy market and
comprehensive planning efforts. Partnering with more than 90 client
organizations, the ISO is dedicated to the continual development and reliable
operation of a modern grid that operates at the least cost to the benefit of
consumers. The ISO bulk power market allocates space on transmission lines,
maintains operating reserves and matches supply with demand. Recognizing the
importance of global climate change, the ISO welcomes new, advanced technologies
that will help meet the energy needs of 30 million Californians efficiently and
cleanly. The ISO is a nonprofit public benefit corporation.

California ISO
Stephanie McCorkle, 916-802-4033
smccorkle@caiso.com
Gregg Fishman, 916-802-9323
gfishman@caiso.com

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