EXTEND the Energy Efficiency Incentives Act of 2007 - Amends the Internal Revenue Code to: (1) to allow individual taxpayers a tax credit, through 2011, for residential energy efficiency expenditures certified to achieve certain levels of energy savings; (2) modify standards for nonbusiness energy property (i.e., air conditioners, heat pumps, water heaters, etc.) and extend the tax credit for such property through 2011; (3) revise the tax credit for solar electric and hot water property to include all technologies for solar-derived electricity; (4) extend through 2011 the tax credit for new energy efficient homes; (5) extend through 2014 the tax deduction for energy efficient commercial buildings and increase the maximum amount of such deduction; (6) allow tax deductions for energy efficient low-rise buildings used for multifamily housing and for energy efficient property expenditures; (7) extend through 2011 the investment tax credit for solar energy and fuel cell property; and (8) allow a business-related tax credit for qualified training and certification costs and equipment expenditures for certifying residential energy savings.