商业建筑占全国建筑总面积的25 %以上，且碳排放强度较其他类型建筑更高。商业建筑虚拟电厂改造有助于找到降低商业建筑高碳排的路径。从全生命周期角度对商业建筑虚拟电厂改造进行探究，提出了基于商业建筑参与碳交易场景下的商业建筑虚拟电厂改造的技术经济性评估方法。从经济性角度考虑包括改造初始投资成本、运营成本、参与碳市场交易收益等评价既有商业建筑虚拟电厂改造全生命周期的经济性。从技术性角度分析商业建筑碳排放行为特点，从虚拟电厂用能、储能、发电三类改造行为出发，评估既有商业建筑全生命周期的降碳潜力。仿真算例结果表明，随着商业建筑虚拟电厂改造总成本的增加，商业建筑生命周期碳排放量也会相对降低，需要平衡两者关系，最终实现虚拟电厂改造成本与商业建筑降碳之间的双赢。技术经济性评估表明，商业建筑虚拟电厂改造静态投资回收期为4年左右，其在经济性方面具备可行性，且商业建筑虚拟电厂改造具备显著降碳潜力。因此，尽管需要一定初始投资，但对既有商业建筑进行虚拟电厂改造在技术经济性上具有可行性。

Commercial buildings account for over 25 % of the total building area nationwide and exhibit higher carbon emission intensity than other building types. Retrofitting these buildings into virtual power plants (VPPs) offers a promising pathway to mitigate their carbon footprint. A technical and economic assessment method of the virtual power plants renovation in commercial buildings based on commercial buildings participating in carbon trading is proposed, exploring the transformation of virtual power plants in commercial buildings from a full lifecycle perspective. From an economic perspective, the analysis incorporates initial retrofit investment, operating costs, and revenue from carbon trading to evaluate lifecycle economic viability of virtual power plant renovation for existing commercial buildings. From a technical perspective, the characteristics of carbon emissions behavior in commercial buildings are analyzed, and the carbon reduction potential of existing commercial buildings throughout their entire lifecycle based on three types of transformation behaviors are evaluated: energy consumption, energy storage, and power generation in virtual power plants.The simulation results show that as the total cost of virtual power plant renovation in commercial buildings increases, the carbon emissions in the lifecycle of commercial buildings will also relatively decrease. It is necessary to balance the relationship between the two and ultimately achieve a win-win situation between the cost of virtual power plant renovation and carbon reduction in commercial buildings.The technical and economic assessment shows that the static investment payback period for the transformation of commercial building virtual power plants is about 4 years, which is feasible in terms of economy, and the transformation of commercial building virtual power plants has significant carbon reduction potential.Therefore, although a certain initial investment is required, the transformation of existing commercial buildings into virtual power plants is technically and economically feasible.