It’s been a big year in Seattle tech so far, with a fresh crop of startups leveraging artificial intelligence, big data, breakthrough security strategies and more to transform industries of all stripes. This is our list of 50 startups who show enough promise — through transformative technology, brilliant ideas or seasoned founders — to warrant keeping an eye on into 2019.

The power grid is around a century old, and a combination of huge inertia-bound energy companies, complex regulation and margin-raising middlemen have created an industry that is cumbersome and ill-equipped to cut emissions. In other words: it’s well overdue for disruption by these Seattle energy tech companies.