27. 行预咨委会注意到，在吉吉里大院增建联合国难民事务高级专员公署和(或)国际移民组织的楼房不会对 A 至 J 号区建设项目的费用或时间表产生任何不利影响，目前尚不清楚潜在的规模经济或增效。因此，行预咨委会建议大会请秘书长在下一次进展情况报告中纳入更多关于潜在效率和与能源有关的节约的详细情况，包括建筑物上安装的任何光伏电池板系统每年将生产、使用和输送的能源。
27. The Advisory Committee notes that adding additional buildings for the Office of the United Nations High Commissioner for Refugees and/or the International Organization for Migration to the Gigiri complex will not have any adverse impact on the cost or schedule of the A–J construction project and that the potential economy of scale or efficiency gains are currently unknown. The Committee therefore recommends that the General Assembly request the Secretary-General to include additional details on the potential efficiencies and on energy-related savings, including the annual energy to be produced, used and redirected by any photovoltaic panel system erected on the building, in the context of the next progress report.