The area is approximately 600 square meters in size and it will now be covered with 44,000 solar panels.
Previously, the owner family leased the land to farmers.
Now it will instead be for solar farmers.
- We have discussed whether it is right to remove arable land, but this is old loam soil that gives so little and the need for electricity will increase enormously, says Carl von Essen, one of the landowners.
The municipality's building permit manager has shown concern that the solar park will disturb the old cultural environments at Ulvåsa, but Carl von Essen does not think it will be a problem because the solar panels will be in a depression almost a kilometer away from the castle.
New Swedish record
EnergiEngagemang, which is building the solar park, estimates that it can last for 35 years and that the investments will be paid for after 10 years.
The solar panels will produce 24GWh per year, enough to cover the need for 1,000 electrically heated villas and more than twice as much as the solar park built at Linköping last year.
In a year, the park will be up and running, but Motala will not be Sweden's leader for very long.
As early as 2023, an even larger solar park will be completed outside Stängnäs.
Jonas Weissglas is marketing manager at EnergiEngagemang and says that in countries like Germany, 50 percent of the solar panels are on the ground.
The corresponding figure in Sweden is 10 percent, but that land solutions are now becoming more common here as well.
See more in the video above.