; (ii) the status of code adoption and compliance in the States and Indian tribes; (iii) implementation of this section; and (iv) improvements in energy savings over time as result of the targets established under section 307(b)(2). (B) Impacts The report shall include estimates of impacts of past action under this section, and potential impacts of further action, on— (i) upfront financial and construction costs, cost benefits and returns (using investment analysis), and lifetime energy use for buildings; (ii) resulting energy costs to individuals and businesses; and (iii) resulting overall annual building ownership and operating costs. (f) Technical assistance to States and Indian tribes The Secretary shall provide technical assistance to States and Indian tribes to implement the goals and requirements of this section, including procedures and technical analysis for States and Indian tribes— (1) to improve and implement State residential and commercial building energy codes; (2) to demonstrate that the code provisions of the States and Indian tribes achieve equivalent or greater energy savings than the model building energy codes and targets; (3) to document the rate of compliance with a building energy code; and (4) to otherwise promote the design and construction of energy- and water-efficient buildings. (g) Availability of incentive funding (1) In general The Secretary shall provide incentive funding to States and Indian tribes— (A) to implement the requirements of this section; (B) to improve and implement residential and commercial building energy codes, including increasing and verifying compliance with the codes and training of State, tribal, and local building code officials to implement and enforce the codes