As groups react to Governor Steve Beshear's energy plan for the state, uncertainties remain about how the plan will be implemented. The plan proposes creating a Renewable Energy and Energy Efficiency Portfolio Standard. It would require 25 percent of Kentucky’s energy to come from some renewable sources but also from increased energy efficiency by the year 2025. Energy and Environment Cabinet secretary Len Peters says the emphasis will be on efficiency, and power plants will not be required to meet any particular target.“We are not breaking it down according to industry by industry by industry. Eighteen percent of it comes from energy efficiency. We think that’s a reasonable goal," says Peters.In contrast, North Carolina is requiring power plants to meet up to 12 and a half percent of their energy needs through renewable sources and efficiency measures. Peters says it’s unclear whether Kentucky will make the standard law or just use it as a policy guideline.