How two college friends launched a company that has helped save 32 terawatt hours of energy and more than $3 billion in energy bills

In this weekly series, CNBC takes a look at companies that made the inaugural Disruptor 50 list, 10 years later.

Before Alex Laskey launched an energy efficiency company in 2007, he was primarily working on political campaigns, “almost exclusively losing campaigns,” he told CNBC in a phone conversation in June.

Towards the end of his early run in…