In this segment of The Motley Fool's "Ask a Fool" series, energy analyst Joel South takes a question from a reader who asks: "With solar stocks rising, I'm looking at a smaller solar company to invest in, RSOL. This company has been around a long time but the stock is only in the $3 range. What is the difference between SolarCity (NASDAQ:SCTY.DL)  and Real Goods Solar (NASDAQ: RSOL)?"  

This segment is from Thursday's edition of "Digging for Value," in which sector analysts Joel South and Taylor Muckerman discuss energy and materials news with host Alison Southwick. The twice-weekly show can be viewed on Tuesdays and Thursdays. It can also be found on Twitter, along with our extended coverage of the energy and materials sectors @TMFEnergy.