Pros
My co-workers were all very friendly and management was largely responsive and supportive of employee needs. My workload was primarily statistical analyses of energy efficiency projects, which fit my career interests at the time. They take statistical analysis very seriously and strive to be objective even as a for-profit company. There was also a discounted stock-buying benefit that was pretty generous if you could afford to buy into it.
Cons
There wasn't much effort made to unify standards between projects over time, so projects were often a mix of code languages or varied widely depending on the previous project lead or how long a project had been running. The PTO and retirement benefits are both pretty bad, and the salary wasn't high enough to make up for that. Career progression options were also somewhat narrow and geared toward sales/business acquisition.