Fortum has invested $5.5m in Exeger Sweden in return for a 5% stake in the solar technology producer.

Sweden-based solar technology developer Exeger Sweden yesterday obtained €5.2m ($5.5m) from clean energy company Fortum’s corporate venturing division Technology and New Ventures in return for a 5% stake.

Exeger has developed printable solar cells that can be used in consumer electronics, where the company has created an e-reader prototype, in smart homes and elsewhere.

The cash will help Exeger boost its production capacity from 10 million to 15 million tablet-sized solar cells per year as the company gears up to…