Amends GS 143-64.12, requiring the energy consumption per gross square foot for all State buildings in total be reduced by 40% by 2025. Increases the frequency of management plan updates for each State agency and State institution of higher learning from biennially to annually. Increases the frequency of reporting utility consumption and costs of each community college from biennially to annually. Directs the State Energy Office to report annually, rather than biennially, to the specified NCGA Commission, Committee, and Division on its comprehensive program to manage utility use for State agencies and State institutions of higher learning.

Amends the definition of energy conservation measure as used in Part 2, Article 3B, GS Chapter 143 (Energy Saving Measures for Governmental Units) set out in GS 143-64.17. Now defines the term to mean a facility or meter alteration, training, or services related to the operation of the facility or meter, when the alteration, training, or services provide anticipated energy savings or generate revenue (was, or capture lost revenue). Now specifically includes proper air and duct sealing of all applicable areas in the building in insulating the building structure and systems. Expands the term to include building analytics systems that allow for advanced software utilizing statistical modeling and machine learning, whether or not supervised, to establish data-driven benchmarks, predict future energy performance, and find additional energy saving opportunities. Amends the definition of energy savings as used in Part 2, to refer to "generated revenues" rather than "captured lost revenues." 

Amends GS 143-135.37 to now require every major facility construction project of a public agency to have the building designed and constructed so that the calculated energy consumption is at least 40% (was, 30%) less than the energy consumption for the same building as calculated using the specified energy-efficiency standard. Similarly increases the energy efficiency standard for major facility renovation projects of public agencies from at least 20% to at least 30% less than the energy consumption for the same renovated building as calculated using the specified energy efficiency standard. Increases the indoor potable water use standard for every major facility construction or renovation project of a public agency from at least 20% to at least 30% less than the same building as calculated using the specified fixture performance requirements.

Requires every State agency and State institution of higher learning to conduct a preliminary practicality and feasibility analysis of implementing energy conservation measures for all building greater than 20,000 square feet in size that have been in use for more than 10 years. Defines economic feasibility to mean the resulting energy savings will cover the cost of implementing the measures within 10 years. Requires the analysis be completed and a report submitted to the State Energy Office no later than May 31, 2020. Details the required findings that must be included following certain determinations. Requires implementation, as specified, of the measures if they are found to be practical and economically feasible, including issuing a request for proposal (RFP) no later than December 31, 2020, if the agency or institution decides to issue an RFP for a guaranteed energy savings contract for one or more buildings to achieve energy conservation measures. Requires each State agency and State institution of higher learning to repeat the described analysis process for all buildings greater than 10,000 square feet in size and that have been in use for more than 10 years no later than May 31, 2025, with RFPs issued for a guaranteed energy savings contract no later than December 31, 2025. Excludes any building for which a practicality and economic feasibility analysis of implementing energy conservation measures has been conducted within 3 years prior to the effective date of the act. Specifies that the provisions do not prohibit any State agency or State institution of higher learning from issuing any RFPs for a guaranteed energy savings contract.  

Repeals Sections 4.2(a) and 4.2(b) of SL 2017-10, which repealed the annual reporting requirement of the Department of Administration on the implementation of the Sustainable Energy Efficient Building Program set out in GS 143-135.39(f) and (g) and GS 143-135.40(b).