As California battles the worst drought in centuries, more than a dozen major California-based businesses, including AppleSolarCity, San Diego International AirportSungevity, and Sapphire Energy signed the Climate Declaration, a business leader call to action that urges federal and state policymakers to seize the economic opportunity of addressing climate change. The announcement was made at the U.S. Climate Leadership Conference at the Hyatt Regency Mission Bay.

San Diego-based companies signing the declaration include: Sapphire Energy, Sullivan Solar, Renovate America, the San Diego Regional Airport Authority, and CleanTech San Diego, a trade association and clean tech cluster representing 800 clean tech companies.

Launched last year by Ceres, a nonprofit sustainability advocacy organization, and its business network, Business for Innovative Climate & Energy Policy (BICEP), the Climate Declaration has more than 750 signatories nationwide, and 140 in California, including iconic brands like General Motors, Unilever, Gap Inc., and eBay Inc. The California signatories have added their own special message to the declaration for Washington:

"As the world’s 8th largest economy, California is a champion of clean energy progress and innovation," states the declaration. "Thanks in part to its smart energy policies including its landmark climate law, AB32, California has been a global leader in job creation, clean energy investments and GDP growth."

If you are interested in adding your company to the Climate Declaration, please click here. If you have any questions, please contact [email protected].

Find the full press release from CERES here.

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