Who said solar energy wasn't a worthwhile investment? It certainly wasn't Goldman Sachs. The company just announced a financing deal with SolarCity (NASDAQ:SCTY.DL) for $500 million to provide upfront costs to install panels for SolarCity's clients. Based on SolarCity's business model, this isn't just charity on Goldman's part. 

This $500 million from Goldman is just the tip of the iceberg. The company plans to invest $40 billion in alternative energy over the next 10 years. According to Fool.com contributor Tyler Crowe, the prospects for this investment look pretty promising. Tyler discusses why Goldman sees so much potential in SolarCity and points out some other promising trends in the solar market that could mean good things going forward.

Motley Fool contributor Aimee Duffy has no position in any stocks mentioned. Motley Fool contributor Tyler Crowe has no position in any stocks mentioned. You can follow them both on Twitter @TMFDuffy and @TMFDirtyBird, respectively. 

The Motley Fool recommends Goldman Sachs. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.