Solar stocks have been on fire over the past few weeks, but there are still reasons to be bullish long-term. China has announced that it will cut subsidies to solar companies and encourage mergers and acquisitions in the industry. 

Add to that the news this week that Berkshire Hathaway's energy subsidiary MidAmerican Energy would buy SunPower's (NASDAQ:SPWR) 579 MW Antelope Valley projects and the bulls came out of hiding

These are two great signs for solar and I think it will bring about a great 2013

Fool contributor Travis Hoium manages an account that owns shares of SunPower and Berkshire Hathaway and personally owns shares of SunPower and has the following options: long JAN 2015 $7 calls on SunPower and long JAN 2015 $5 calls on SunPower. You can follow Travis on Twitter at @FlushDrawFool, check out his personal stock holdings or follow his CAPS picks at TMFFlushDraw

The Motley Fool owns shares of Berkshire Hathaway. Motley Fool newsletter services recommend Berkshire Hathaway and First Solar. 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.