Close-up of an incandescent light bulb filament glowing in a dark environment, creating a swirling pattern of warm light.

Roselle LLP is a boutique law firm focused on the energy transition.

We want to help you build.

Drawing on experience at the highest levels of government, Roselle leads its clients through the uncertainty posed by an ever-changing regulatory environment. Through collaboration, creativity, and litigation when necessary, we stand ready to take on your hardest problems and most difficult adversaries.

Our Team

When you hire Roselle, you hire a team. Drawing on overlapping but distinct backgrounds, we work collaboratively to address your needs.

Sam Walsh

Avi Zevin

A woman with red hair and glasses wearing a green sleeveless dress with a silver necklace standing outdoors with trees and a building in the background.
A man with short, curly blonde hair and blue eyes wearing a light blue blazer and a light yellow shirt, standing indoors with a blurred background featuring warm lighting and wooden shelves.
A man with a beard wearing a light blue dress shirt and a tan blazer standing outdoors with green trees in the background.

Miles Farmer

A man with glasses and a trimmed beard, wearing a white shirt and brown blazer, standing in front of a multicolored abstract background.

Kim Smaczniak

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Our Work

  • Grants, loans, and other federal financial assistance agreements and litigation

  • Emerging energy technologies, including advanced nuclear, geothermal, hydrogen, sustainable aviation fuels, and virtual power plants

  • Grid enhancing and grid edge technologies, including high-performance conductors

  • Electric market and utility regulation

  • Transmission and distribution planning and interconnection processes

  • Energy policy development and legislative drafting

  • Energy-related tax policy

  • Energy efficiency regulation and enforcement

We have the experience to advocate for you before federal agencies, including the Federal Energy Regulatory Commission and the Department of Energy, state regulators, and in the federal courts. 

Roselle specializes in:

  • Energy supply and interconnection issues for data centers and other large customers

  • Administrative and constitutional litigation

  • Environmental and climate change regulation

  • Regulatory intelligence and strategic consulting

City skyline at sunset with illuminated streets and a colorful sky transitioning from orange to dark blue.

Why Roselle?

We are inspired by Thomas Edison and his groundbreaking innovation in Roselle, New Jersey. In 1883, Roselle became the first community in the world to be illuminated by an interlinked system of overhead wires connected to a single generator. Edison's experiment proved that electricity could light the globe.