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Geothermal energy is one of the cooler concepts in sustainable energy – or maybe it’s one of the hotter concepts! The idea is simple, but the way it works is complicated.

This is the actual drill bit we used to drill down to the aquifers

Basically, somewhere far below the Museum are underground aquifers (underground lakes) with water that remains about 57 degrees Fahrenheit year-round. So, we drilled a hole down to the aquifer and…

  • In the summer, the water is cooler than the hot summer air. We pump water (which is relatively cool) into the building and it cools down the air, reducing the need for air conditioning.
  • In the winter, the waster is warmer than the cold winter air. We pump the same water (relatively warm now) into the building and it warms the air, reducing the need for heating.

The energy required to use the pump is very small, so overall a good geothermal system really reduced the amount of energy you need to heat and cool a building, which is both sustainable and money-saving.

It’s a hard concept to explain to kids, so bring them to the Museum to explore our geothermal exhibit. You will find the exhibit on the Lower Level, next to Fantasia in the Science Inquiry Center.

Turning the dial changes the exhibit from winter to summer and then back

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