Global warming has caused and will continue to cause an increasing amount of extreme weather phenomena. Science has shown that the risks for irreversible and catastrophic changes will rise considerably if the climate warms up by more than 1.5 or even 2 degrees Celsius. The City of Helsinki bears its responsibility in mitigating climate change. The aim is to make Helsinki carbon neutral by 2035. The operating environment of energy produced by ground heat wells is changing in Finland – recently the interest in boring large energy well fields and deeper energy wells has increased considerably. There are two types of geothermal energy wells: wells based on a closed loop system and EGS wells, operating with the help of a network of clefts in the bedrock. EGS power stations are always associated with an earthquake risk, as they alter the stress state in the bedrock. The traditional ground heat wells are currently more cost-effective in Finland than the geothermal energy wells when their construction costs are compared with the value of the energy generated by them. The construction costs of geothermal energy solutions will most likely decrease along with future mass production. Geothermal energy wells will also bring many benefits compared with ground heat wells. In terms of underground construction, it is better to have fewer boreholes. Unlike traditional ground heat wells, geothermal energy will never run short over the years. The energy production of ground heat wells is typically calculated for a period of 20 to 50 years. Cooling also known as recharging will increase the lifespan of a ground heat system for some decades. The energy production of a two-kilometre deep geothermal energy well in the bedrock of Helsinki has been modelled for the next 1,000 years. The energy production of a two-kilometre deep geothermal energy well will initially reach 800 MWh annually and still be as high as 640 MWh annually after 1,000 years. Helsinki also aims to utilise renewable energy on a regional basis, and not only for individual building lots. Our intention is to integrate the utilisation of ground heat and geothermal energy as part of land-use planning. The pilot sites will include both new production and complementary development. This work is part of the background research for the Helsinki Underground Master Plan 2021.

全球变暖已经并将继续导致越来越多的极端天气现象。科学表明，如果气候变暖超过 1.5 甚至 2 摄氏度，发生不可逆转和灾难性变化的风险将大大增加。赫尔辛基市承担着减缓气候变化的责任。目标是到 2035 年使赫尔辛基实现碳中和。芬兰地热井生产能源的运行环境正在发生变化——最近，人们对钻探大型能源井田和更深的能源井的兴趣大大增加。有两种类型的地热能源井：基于闭环系统的井和 EGS 井，在基岩裂缝网络的帮助下运行。EGS发电站总是与地震风险有关，因为它们改变了基岩中的应力状态。目前在芬兰，传统地热井的建造成本与其产生的能源价值相比，比地热井更具成本效益。地热能源解决方案的建设成本很可能会随着未来的大规模生产而降低。与地热井相比，地热能井也会带来很多好处。就地下施工而言，最好少钻孔。与传统的地热井不同，地热能多年来永远不会短缺。地热井的能源生产通常计算 20 至 50 年。冷却也称为再充电将增加地热系统的使用寿命数十年。赫尔辛基基岩中一口两公里深的地热能源井的能源生产已被模拟了未来 1000 年。一口两公里深的地热能井的能源产量最初将达到每年 800 兆瓦时，1000 年后仍将高达每年 640 兆瓦时。赫尔辛基还致力于在区域范围内利用可再生能源，而不仅仅是单个建筑地段。我们的目的是将地热和地热能的利用作为土地利用规划的一部分。试点地点将包括新的生产和补充开发。这项工作是赫尔辛基 2021 年地下总体规划背景研究的一部分。一口两公里深的地热能井的能源产量最初将达到每年 800 兆瓦时，1000 年后仍将高达每年 640 兆瓦时。赫尔辛基还致力于在区域范围内利用可再生能源，而不仅仅是单个建筑地段。我们的目的是将地热和地热能的利用作为土地利用规划的一部分。试点地点将包括新的生产和补充开发。这项工作是赫尔辛基 2021 年地下总体规划背景研究的一部分。一口两公里深的地热能井的能源产量最初将达到每年 800 兆瓦时，1000 年后仍将高达每年 640 兆瓦时。赫尔辛基还致力于在区域范围内利用可再生能源，而不仅仅是单个建筑地段。我们的目的是将地热和地热能的利用作为土地利用规划的一部分。试点地点将包括新的生产和补充开发。这项工作是赫尔辛基 2021 年地下总体规划背景研究的一部分。我们的目的是将地热和地热能的利用作为土地利用规划的一部分。试点地点将包括新的生产和补充开发。这项工作是赫尔辛基 2021 年地下总体规划背景研究的一部分。我们的目的是将地热和地热能的利用作为土地利用规划的一部分。试点地点将包括新的生产和补充开发。这项工作是赫尔辛基 2021 年地下总体规划背景研究的一部分。