Climate Stewardship Act of 2007

Climate Stewardship Act of 2007 - Requires the Administrator of the Environmental Protection Agency (EPA) to establish a National Greenhouse Gas Database consisting of: (1) an inventory of greenhouse gas (GHG) emissions by covered entities (specified entities that own or control a source of GHG emissions in the electric power, industrial, and commercial sectors of the U.S. economy that emit more than 10,000 metric tons of GHGs per year); and (2) a registry of GHG emission reductions and increased sequestration, applicable to both covered and noncovered entities.

Establishes a program for the market-driven reduction of GHGs by covered entities through the use of tradeable emissions allowances. Requires the Administrator to establish a declining cap on tradeable allowances to reduce GHG emissions over time. Requires covered entities, beginning in 2012, to submit to the Administrator one tradeable allowance for every metric ton of GHGs emitted. Allows tradeable allowances to be sold, exchanged, purchased, retired, borrowed, offset, or otherwise used as authorized by this Act. Imposes civil penalties on covered entities that fail to submit allowances.

Establishes the Climate Change Credit Corporation (CCCC) to receive, manage, buy, and sell tradeable allowances.

Directs the Administrator to make allocations of allowances to covered sectors and entities, and to the CCCC, providing initial allocations for early action and accelerated participation.

Requires the CCCC to establish a program to provide financial support for: (1) technology to assist in compliance with this Act; (2) incentives for GHG emission reductions or net increases in sequestration on agricultural lands; and (3) the restoration of habitat to help fish and wildlife adapt to climate change.

Amends the Coastal Zone Management Act of 1972 to require the Secretary of Commerce to: (1) report to Congress on the oceanic and coastal impacts of climate change; and (2) assist certain coastal states in preparing persons to adapt to climate change.

Requires the Director of the Office of Science and Technology Policy to: (1) establish a program on adaptation technologies as part of the Climate Technology Challenge Program; and (2) perform regional infrastructure cost assessments of the impacts of climate change. Requires the Secretary of Commerce to: (1) submit a climate change adaptation plan to Congress; and (2) research the impact of climate change on low-income populations worldwide.

Amends the Pittman-Robertson Wildlife Restoration Act to provide funding for the Wildlife Conservation and Restoration Account that may be used by states to develop and implement climate change impact mitigation plans.