Contributing to a Clean & Sustainable Society

Year Founded
Total Capacity
0 GW
Renewable Projects
0 GW
Capacity in the development pipeline
0 GW

Perennial Power, Inc. is part of the global portfolio of Sumitomo Corporation

Established in 2002, Perennial Power owns, operates, and manages power plants in the United States, leveraging the unique advantage of a globally integrated Japanese trading company with industry-oriented expertise. 

Perennial invests in key infrastructure projects to contribute to the development and sustainability of the local economies and communities. The foundation of Perennial’s investment approach is to provide long-term contributions and inclusive solutions to stakeholders through Sumitomo’s unique value proposition.

Hermiston power plant at night


Accounts for roughly 38% of electricity generation in the US as well as almost a quarter of global electricity generation, and is a reliable source of electricity that can be dispached on demand.

First Kansas Wind Farm
wind power


In the United States, SC Group has achieved investment and operation in five wind generation businesses, totaling ~1.5 GW since its first investment in the onshore wind power generation business in 2009.

Willey Battery Storage

Battery Storage

Battery storage is the fastest responding dispatchable source of power on electircl grids, and will be a critial resource to stablize the power grid in many markets.

Torquoise Solar
solar panels


The amount of sunlight that strikes the earth’s surface in an hour and a half is enough to handle the entire world’s energy consumption for a full year.  (source: Office of EERE)

Sumitomo Corporation logo

Perennial Power, Inc. is part of the global portfolio of Sumitomo Corporation. Perennial was formed by Sumitomo to invest in independent power plants in North America. 

Sumitomo currently owns over 10GW of power generation all over the world and looks for further expansion of its contribution to the global economy.