Study visit: Sand energy storage in practice

How can we store summer solar heat – and use it in the middle of winter?

Welcome to a study visit to Kälby group housing where an innovative sand energy storage is in operation. Here you will get a concrete insight into how the technology works, what effects it has and what opportunities it creates for the energy system of the future.

📅 Date: May 28, 2026
🕒 Time: 08.45–approx. 11.00
📍 Place: Departure from Energy Evolution Center (bus included)
💰 Cost: Free of charge
➡️ Registration: via the form below (use the form – not the calendar invitation)

This is what you get with you

• A concrete understanding of how seasonal heat storage works


• Insight into how the technology can be used in properties and energy systems


• Opportunity to ask questions directly on site

About the system

The technology is based on solar heat being collected during spring and summer and stored in an insulated layer of stone powder in the ground. When energy demand increases during winter, the heat is retrieved using a heat pump.

The storage gradually heats up during the summer, reaching its highest temperature in early autumn. The energy is then used during the winter months, before the cycle starts again in the spring.

Read more about the solution at Norconsult.

Program

08.45 – Gathering
Energy Evolution Center (back)

09.00 – Departure
Shared transport by bus

09.30 – Study visit
Overview of the facility + coffee break

10.20 – Return trip

No later than 11.00 – Back at EEC

Important information

Protective equipment

• High-visibility vest required (bring your own or indicate in the registration if you need to borrow one)


• Safety shoes are required (please state shoe size in registration if you need to borrow one)