Geothermal energy – An investment that pays for itself? A comprehensive guide

Geothermal heating for new construction: Price, savings & installation | Guide 2025

Drilling an energy well for geothermal energy on the plot of a detached house.

Are you considering geothermal heat? This comprehensive guide explains the price of a geothermal heat pump, the real savings, the installation process, and why it is the superior form of heating in Finland.

Rising energy costs and environmental awareness have made choosing a heating system one of the most important decisions for new home builders. In this race, one stands out above the rest: geothermal. It's a long-term investment that offers not only an ecological way to heat, but also significant savings on housing costs. But what does geothermal really cost, how is it installed, and is it really worth it? This guide delves into the secrets of geothermal.

In an era of rising energy prices and growing environmental awareness, geothermal energy has emerged as the undisputed king of home heating systems. It is an ecological and extremely cost-effective solution that utilizes the sun's thermal energy stored in the soil, rock or water. Although the initial investment in a geothermal heat pump and drilling an energy well is higher than in many other systems, it pays for itself in significantly lower heating costs, typically within 7–10 years.

A geothermal heating system is almost maintenance-free, long-lasting and reliable. It produces heat evenly all year round, regardless of the weather, and at the same time offers the possibility of cooling your home in the summer heat (ground cooling). By choosing geothermal heating, you not only reduce your home's carbon footprint, but you also make an economically sound investment that increases the value of your property and guarantees affordable living costs for decades to come.

The most important points

  • Geothermal energy utilizes free and renewable energy stored in the ground for heating and hot water production.
  • It is very energy efficient and can reduce heating bills by up to 80% compared to electric or oil heating.
  • Installation requires a permit and drilling an energy well, which makes the initial investment large (€20,000–30,000).
  • The system typically has a payback period of 7–12 years, after which it produces significant savings.
  • Geothermal energy is stable and efficient even in severe frosts, unlike an air-to-water heat pump.
  • Research has shown that investing in geothermal energy increases the value of a property.


A modern ground source heat pump installed in a clean technical space.

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