Company/Organization Profile

State Grid Tongshan Power Supply Company, a major county-level power utility under State Grid Jiangsu Electric Power Co., Ltd., has earned multiple accolades in recent years. These include the China Association for Quality's "Quality Credit A Enterprise" award, recognition as a "National Advanced Enterprise for Excellence in Performance Management", and the "Outstanding Quality Management Team" honor from Jiangsu Province. The company was also named Xuzhou's "Model Civilized Unit". Having published social responsibility reports annually for eight consecutive years, it has established a systematic CSR management framework. With active leadership involvement in sustainable development initiatives, the company has obtained certification under GB/T 39604-2020 "Social Responsibility Management System-Requirements and Guidelines for Application".

机构简介

国网铜山供电公司是国网江苏省电力有限公司下属大型县级供电企业。近年来，先后获得中质协“质量信用A等企业”“全国实施卓越绩效模式先进企业”“江苏省质量管理小组优秀企业”、徐州市“文明单位标兵”等荣誉称号，已连续8年公开发布社会责任报告，构建形成系统化的社会责任管理体系，公司领导深度参与可持续发展实践，获得GB/T 39604-2020《社会责任管理体系 要求及使用指南》认证证书。

Project Overview

Xuzhou Garden Expo Park covers an area of 203 hectares and serves as the venue for the 13th China (Xuzhou) International Garden Expo; it is a key ecological project spearheaded and implemented by the government. Following the conclusion of the Garden Expo in December 2022, the park's average daily visitor count gradually declined, leading to significant underutilization of its facilities and challenges in sustaining its operations—posing a common dilemma regarding how to leverage the park after such a large-scale event. After conducting field research in locations such as Jinan and Moganshan, the park management adopted a four-season operational strategy centered on "winter ice and snow activities combined with spring and summer tourism." However, two major bottlenecks soon emerged: first, high-energy-consuming facilities, such as snowmaking equipment, would drive up energy costs—each snowmaking machine consumes 80 kWh of electricity per hour; at a scale of 30 units, the monthly energy cost would be substantial; second, the park's high carbon emission levels and low proportion of green electricity were inconsistent with its ecological demonstration status.

Improvement Objective: With a focus on enhancing spatial energy efficiency, this initiative employs a "off-peak electricity utilization + equipment variable frequency drive + photovoltaic energy storage" system to reduce energy intensity and energy costs, while leveraging green electricity to fill the carbon sink gap, thereby enabling the ski resort and surrounding campus to operate in a low-carbon, low-cost, and sustainable manner.

项目背景

徐州园博园占地203公顷，为第十三届中国（徐州）国际园林博览会会场，是政府主导实施的重点生态项目。2022年12月园博会闭幕后，园区日均游客量逐渐减少，空间大量闲置、运营难以为继，面临大型展会后“如何利用”的普遍难题。园方在考察济南、莫干山等地后，确定“冬季冰雪+春夏旅游”的四季运营思路，但两大瓶颈随即显现：其一，造雪机等高耗能设施将推高用能成本——单台造雪机每小时耗电80千瓦时，按30台规模测算，月用能成本高企；其二，园区碳排放水平高、绿电占比低，与生态示范定位不符。

改进目标：以空间能效提升为核心，通过“谷电利用+设备变频+光伏储能”系统降低用能强度与用能成本，并以绿电补足碳汇缺口，实现滑雪场及园区的低碳、低成本、可持续运营。

Project Implementation

(1)Energy diagnosis and site feasibility study:To assess the park's energy consumption patterns and feasibility, the park management launched a "Post-Event Utilization" study to determine a transformation strategy aimed at driving year-round operations through the ski resort. During a field visit to understand the park's energy needs, a customer manager from Tongshan Power Supply Company initiated a feasibility study for the park's energy infrastructure upgrade; this study resulted in the submission of an "Energy Consumption Diagnosis Report," which confirmed that the peak load during the exhibition period would be only 70% of the designed capacity, and that a 30% capacity expansion margin had been reserved for the underground cables—ensuring the hardware infrastructure was fully compliant for upgrade. As a member of the park's project enhancement design team, Tongshan Power Supply Company collaborated with the park management to conduct an on-site survey for the ski resort's site selection. From the 54-hectare mine rehabilitation area, they identified an abandoned quarry site measuring 4 hectares in size, with a vertical elevation difference of 12 meters and a slope of 25 degrees. A drone-based 3D modeling exercise verified that this site meets the standards for beginner ski trails; the surrounding hard rock strata were deemed suitable for supporting snow-making equipment, and the fogging system at the Suzhou Garden venue on the eastern side of the quarry could be utilized for enhancing the ski resort's landscape; furthermore, the water circulation system in the western section, after undergoing modification and purification, could be connected to a snow-making machine via underground pipelines to produce snow. The upgrade plan was approved during the design presentation meeting for the Park Expo Park Enhancement and Upgrading Cooperation Project.

(2) Snowmaking Energy Consumption Management: To address the energy consumption challenges associated with 30 high-power snowmaking machines (each consuming 80 kWh per hour), a combined approach of "centralized snowmaking during off-peak hours + variable-frequency drive (VFD) retrofitting" was implemented: First, centralized snowmaking was carried out during nighttime off-peak electricity periods to reduce energy costs; second, the Quality Management Team of the Tongshan District Power Supply Company led the VFD retrofitting of the snowmaking machines by installing preconfigured VFD control programs, which increased the operating power during off-peak hours to 110%, thereby fully leveraging preferential electricity pricing rates. Following the retrofitting, each snowmaking machine achieved a maximum energy savings of 58 kWh per hour, resulting in a 60% reduction in overall energy costs.

(3)To establish a zero-carbon energy system:the Tongshan Power Supply Company retrieved the park's annual electricity consumption data and calculated its carbon emissions at approximately 4,218 tons. In collaboration with the park management, the company employed a random forest model to estimate tree height, biomass, and vegetation carbon stock, determining an annual vegetation carbon sequestration capacity of 3,691 tons. Based on this finding, the company identified an implementation pathway to "fill the carbon sequestration gap using green electricity." Subsequently, the company identified 17 suitable sites within the park for adaptive reuse: these sites will be developed into integrated "photovoltaic–storage–charging" homestays; a 200-kilowatt photovoltaic array will be installed on the roof of the visitor center; and a prefabricated energy storage unit will be constructed to store surplus electricity and serve as an emergency power supply for the ski resort.

(4) Commissioning and Data Verification: Upon completion of the full-scale park renovation, the first batch of visitors entered the park via an electric shuttle bus. The park's smart display screen showed in real time: the energy storage system had accumulated 1,000 kWh of energy; the average daily photovoltaic power generation exceeded 2,000 kWh; and the carbon dioxide emissions amounted to 3,698 tons – merely 7 tons more than the carbon sequestration capacity provided by the vegetation; thus, the park has essentially achieved "zero-carbon" operation.

项目实施

用能诊断与场地论证

园方启动“会后利用”调研，确定以滑雪场带动四季运营的转型方向。铜山供电公司客户经理上门走访时获悉园区用能需求，随即开展园区改造升级用能可行性论证：提交《用能诊断报告》，确认会展期间峰值负荷仅为设计容量70%、地下电缆预留30%增容余量，升级硬件基础过关；铜山供电公司作为园区项目提升设计团队成员，与园方联合开展滑雪场选址实地勘测，在54公顷矿山修复区中选定一处4公顷、12米高差、坡度25度的废弃采石宕口，经无人机三维建模验证符合初级滑雪道标准，周边预留硬质岩层可承载造雪设备，宕口东侧苏州园场馆雾森系统可为雪场造景，西区水循环系统经改造净化后可通过地下管线接入造雪机冷凝成雪。改造计划在园博园改造提升合作项目设计汇报会上通过。

造雪能耗治理

针对30台大功率造雪机（单台每小时耗电80千瓦时）的能耗痛点，实施“谷电集中造雪+变频改造”组合措施：一是利用夜间谷电时段集中造雪，降低用能成本；二是由铜山供电公司质量管理小组主导造雪机变频改造，加装变频器预设程序，在谷电时段将运行功率提升至110%，充分利用电价优惠。改造完成后，每台造雪机每小时最多节电58千瓦时，综合用能成本下降60%。

零碳能源体系建设

铜山供电公司调取园区全年用电量，核算景区碳排放约4218吨；与园方利用随机森林模型估算树高、生物量与植被碳储量，得出年度植被碳汇量3691吨，据此明确“以绿电补足碳汇缺口”的实现路径。随后在园区规划17处可改建点位：打造“光储充”一体化民宿，在游客中心屋顶加装200千瓦光伏板，配套建设储能预制舱吸纳盈余电量并兼作雪场应急电源。

（四）建成投运与数据验证

园区改造全面完成后，首批游客乘坐电动摆渡车入园。园区智慧大屏实时显示：储能系统蓄能1000千瓦时，光伏日均发电量突破2000千瓦时，二氧化碳排放量3698吨，仅比植被碳汇量多出7吨，基本实现“零碳”运营。

Project Outcome

(1)Outstanding project outcomes: Significant reduction in snow-making energy consumption – Following the variable-frequency drive upgrade, each snow-making machine can save up to 58 kWh of electricity per hour, resulting in a 60% decrease in overall energy costs; Notable success in replacing conventional electricity with green power – The installation of 200 kW photovoltaic panels on the visitor center's roof generates an average daily electricity output of over 2,000 kWh, while a pre-fabricated energy storage unit stores 1,000 kWh of energy; Continuous decline in carbon emissions – The scenic area's carbon emissions fell from approximately 4,218 tons in 2023 to 3,698 tons in 2024, approaching the vegetation carbon sink capacity (3,691 tons); Simultaneous improvement in operational efficiency – Monthly electricity costs have decreased by approximately 40%; during the 2024 snow season, the park averaged 8,000 visitors per day (down to fewer than 500 visitors per day after the conclusion of the Garden Expo); in the spring and summer seasons, the park has achieved sustainable long-term operations through signature initiatives such as the "Fog Forest Cooling" and "Starry Sky Ice Drink" programs, alongside seven homestays operating with near-zero carbon emissions, ensuring that the park welcomes visitors throughout all four seasons.

(2) Project Innovation Highlights: – Model Innovation: The "Southern Garden + Ice and Snow Sports" four-season operational model addresses the challenge of underutilized post-event spaces following large-scale exhibitions, enabling the sustainable utilization of ecological spaces; – Technological Innovation: Combines variable-frequency retrofitting of snowmaking machines with off-peak electricity utilization, implements an integrated "photovoltaic + energy storage + charging" system, and employs a random forest model to quantify vegetation carbon sinks alongside real-time visualization of carbon data on display screens; – Collaborative Innovation: The power supply company and the park operator have formed a joint team to achieve end-to-end collaborative coordination covering the entire process of "energy consumption diagnosis – solution design – retrofit implementation – data validation."

(3) Project Promotion Value: The utilization of off-peak electricity, frequency conversion system upgrades, and green power substitution have established a standardized operational mechanism; the method of "determining the scale of green power based on carbon sink calculations" does not depend on specific site conditions and can be replicated and extended to other scenic areas, industrial parks, and venue-based spaces.

成果亮点

（一）项目成效突出

造雪能耗大幅下降：变频改造后，单台造雪机每小时最多节电58千瓦时，综合用能成本下降60%；绿电替代成效显著：游客中心屋顶加装200千瓦光伏板，日均发电量突破2000千瓦时，储能预制舱蓄能1000千瓦时；碳排放持续走低：景区碳排放由2023年约4218吨降至2024年3698吨，逼近植被碳汇量（3691吨）；运营效益同步提升：每月电费下降约四成，2024年雪季日均接待游客8000人次（园博会闭幕后一度不足500人/日），春夏依托“雾森纳凉”“星空冰饮”等特色项目和7家近“零碳”民宿实现长线运营，园区“四季有客”。

（二）项目创新亮点

模式创新——以“南国园林+冰雪运动”四季运营模式破解大型展会后空间闲置难题，实现生态空间持续利用；技术创新——造雪机变频改造与谷电利用相结合，光伏+储能“光储充”一体化，随机森林模型量化植被碳汇、碳数据实时上屏可视；协同创新——供电公司与园区运营方组成联合团队，实现“用能诊断—方案设计—改造实施—数据验证”全链条协同。

（三）项目推广价值

谷电利用、变频改造、绿电替代已形成常态化运行机制；“以碳汇测算确定绿电规模”的方法不依赖特定场地条件，可复制推广至其他景区、园区及场馆类空间。

Project Highlights

Ecological and environmental benefits: Through variable-frequency drive energy savings, off-peak electricity utilization, and the deployment of photovoltaic energy storage systems, the park's carbon dioxide emissions were reduced to 3,698 tons – representing a reduction of approximately 520 tons compared to the pre-implementation level; by utilizing self-generated green electricity for on-site consumption and employing energy storage to smooth peak and off-peak loads, a low-carbon operational closed-loop system integrating "photovoltaics + energy storage + carbon monitoring" has been established (Statistical basis: monitoring data from the park's smart display screen; annual emissions are calculated based on the park's total annual electricity consumption).

Social Impact: The park has been transformed from an idle space with fewer than 1,000 daily visitors after its closure into a sustainable cultural and tourism destination that welcomes an average of 8,000 visitors per day during the winter season and operates year-round, thereby boosting regional cultural and tourism consumption as well as employment; as a model for "post-event utilization" in government-led key ecological projects, it provides a replicable demonstration for the green transformation of large-scale exhibition venues and repurposed abandoned mining sites; these initiatives have garnered widespread attention in the media.

成果影响力

生态环境效益：通过变频节电、谷电利用与光伏储能替代，园区二氧化碳排放量降至3698吨，较项目实施前减排约520吨；绿电自发自用、储能削峰填谷，形成“光伏+储能+碳监测”低碳运营闭环（统计口径：园区智慧大屏监测数据，年排放量按全年用电量折算）。

社会影响：园区由闭幕后日均不足1000名游客的闲置空间，转变为雪季日均8000人次、四季持续运营的绿色文旅目的地，带动区域文旅消费与就业；作为政府主导重点生态项目的“会后利用”样板，为大型展会场馆及废弃矿山修复空间的绿色转型提供可复制示范，相关实践经媒体报道获得广泛关注。

Reviews & Honors

The person in charge of the industrial park's construction and operation unit stated: "The implementation of this comprehensive package of measures has not only improved the green electricity index and power supply reliability but also reduced monthly electricity costs by approximately 40%." The project was jointly advanced by the power supply company and the industrial park operator, establishing a full-process collaborative mechanism covering "energy consumption diagnosis – solution design – renovation implementation – data verification." Upon completion of the renovation, the industrial park utilizes a smart display screen to provide the public with real-time visualization of carbon emission, green electricity generation, and energy storage operational data, enabling visitors and the general public to monitor and experience the system. As a practical example of "post-event utilization" for the 13th China (Xuzhou) International Garden Expo, this project has received phased recognition from both the relevant government authorities and the power supply enterprise; its outcomes have been covered and disseminated by the media. Moving forward, the project will be integrated with the initiative to establish green and low-carbon demonstration zones to further refine third-party evaluation and certification mechanisms.

评价与荣誉

园区建设运营单位负责人：“这套‘组合拳’打下来，不仅绿电指数和供电可靠性提上去了，每月电费还能降四成左右。”项目由供电公司与园区运营方联合推进，形成覆盖“用能诊断—方案设计—改造实施—数据验证”的全流程协同机制；改造完成后，园区通过智慧大屏向公众实时展示碳排放、绿电发电与储能运行数据，接受游客与公众监督体验。作为第十三届中国（徐州）国际园林博览会的“会后利用”实践，项目得到政府主管部门与供电企业的阶段性认可，相关成果已被媒体报道传播。后续拟结合绿色低碳示范创建，进一步完善第三方评价与认证。