Bildnachweise:
| © kebox | - Tipps zur Energie |
| © diego cervo | - businessman and electrician shaking hands |
| © Thomas Reimer |
- Geld05 |
| © Ramona Heim | - photovoltaic |
| © m.schuckart | - Holzanhänger mit Ökostrom |
| © Ingo Bartussek | - looking up to the roof structure in a modern timber-frame house |
| © N-Media-Images | - Energiewende |
| © Lucaz80 | - Men working on a photovoltaic plant |
