A tax lawyer became a clean energy investor before solar was an easy sell. Two decades later, Neil Auerbach is still working on the same problem: how to turn a promising technology into a business that lasts.

Before clean-energy upgrades were entries on a property-tax bill, Chris Nard spent decades learning what happens after a promise becomes a payment. His career connects mortgage insurance, bank lending and PACE finance through one durable obsession: making long-term obligations work in the real world.

From the Senate to ad tech, quantitative finance and home-energy lending, Jesse Comart has built a career around one stubborn idea: communication works best when it is connected to the business, the employees and the people outside the building.