Recent research from Jiangsu Province, China, highlights the untapped potential of shallow geothermal energy (SGE) as a sustainable energy source, particularly through the use of vertical ground source heat pumps (VGSHP). This study, led by Peng Yu from the Key Laboratory of Geological Safety of Coastal Urban Underground Space, Ministry of Natural Resources, reveals that approximately 76,453 square kilometers of the province are suitable for SGE development. The findings, published in the journal Energies, underscore the significant commercial opportunities for the energy sector, building developers, and local governments.
Shallow geothermal energy, which typically exists at temperatures below 25 °C, can be harnessed for heating and cooling urban buildings. The study indicates that the total heat exchange capacity for cooling in summer is 1.21 billion kilowatts, sufficient to provide cooling for an area of 12.1 billion square meters. In winter, the heating capacity reaches 870 million kilowatts, supporting heating for an area of 10.9 billion square meters. This capability positions SGE as a viable alternative to traditional energy sources, especially in a province with a high demand for both heating and cooling due to its climate.
The research emphasizes the importance of understanding local geological conditions before large-scale implementation. As Peng Yu notes, “It is crucial to conduct appropriate evaluations of the resource development potential and implement strategic planning based on local conditions.” This approach not only ensures sustainable use of geothermal resources but also mitigates the risks associated with overexploitation.
The potential benefits extend beyond energy savings. The annual available resource is estimated at 2.68 trillion kilowatt-hours, equivalent to 330 million tons of standard coal, which could drastically reduce carbon dioxide emissions by 786 million tons, along with significant reductions in other pollutants. The environmental governance costs associated with these emissions are calculated to be around 91.6 billion yuan, indicating the financial implications of adopting SGE technologies.
For businesses and local governments, the findings present a compelling case for investment in geothermal energy infrastructure. As cities aim for carbon neutrality, integrating SGE into urban planning and development can not only enhance energy efficiency but also contribute to environmental goals. The study’s detailed suitability zoning and quantitative assessment serve as a roadmap for stakeholders looking to capitalize on this resource.
In conclusion, the research from Jiangsu Province illustrates the vast potential of shallow geothermal energy. By strategically implementing VGSHP systems, the region can not only meet its energy demands but also lead the way in sustainable development, paving the path for similar initiatives in other urban areas. The insights provided by this study, as published in Energies, are invaluable for promoting a greener future.
