300MW powering EVRAZ Rocky Mountain Steel with Xcel Energy

Xcel Energy provides the energy that powers millions of homes and businesses across eight Western and Midwestern states. In September 2019, Xcel Energy, EVRAZ North America, and Lightsource bp announced that they had formed an innovative long-term partnership to develop a 300 megawatt solar farm in Pueblo, Colorado in order to power the EVRAZ Rocky Mountain Steel mill facility. EVRAZ North America is a wholly owned subsidiary of EVRAZ plc, one of the largest vertically integrated steel and mining businesses in the world.

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    Site selection & preliminary design

  • 4Ti0zG5k-design

    Stakeholder outreach

  • 9tguFMyH-planning

    Permitting & environmental studies

  • RcLrW4w7-discharge

    Land management & biodiversity planning

  • zq4W7u03-construction

    Final engineering, financing & construction

  • Operation & maintenance

  • Decommissioning & recycling


Lightsource bp has financed, built, and will continue to own and operate the Bighorn Solar project and sell all the electricity it generates to Xcel Energy under a long-term power purchase agreement. The project is located on EVRAZ Rocky Mountain Steel property in Pueblo, making it one of the largest on-site solar facilities dedicated to a single customer in the country.

EVRAZ North America is Xcel Energy’s largest retail electric customer in Colorado and one of Pueblo’s largest employers. With its 20-year, fixed rate structure, the project provides EVRAZ North America with predictable electricity prices and allows the mill, which employs about 1,000 workers, to stay in Pueblo and invest in its future. The project supports the broader Colorado Energy Plan, which will deliver 55% renewable energy to the grid by 2026 and reduce carbon emissions by 60%, as well as Xcel Energy’s bold vision to deliver 100% carbon-free electricity by 2050. Construction is expected to be completed by the end of 2021.

Xcel Energy, EVRAZ North America and Lightsource bp are incredibly proud of this solar project, and the opportunities it will offer the organizations and the local communities.

“If you were wondering what a renewable energy future would look like, this is a great example.”  – Colorado Governor Jared Polis, speaking at the announcement press conference

  • 300MWᴅᴄ
    /240MWᴀᴄ capacity
  • 433,770
    metric tons of CO2 saved per year
  • 92,100
    fuel-burning cars taken off road (equivalent)
  • 300
    local jobs created
  • $22M
    local tax revenue


Find out more about our Responsible Solar approach

Videos of our Bighorn Solar project

Here are some project specific updates:


Bighorn: Where solar meets steel

The EVRAZ Rocky Mountain Steel Mill will become the first steel mill to run almost entirely on solar.


Introducing Bighorn Solar

Flyover footage of our site plans and extra information on the project


Creating & Retaining Jobs in Pueblo, Colorado

Our Bighorn Solar project is revitalizing the economy by creating jobs.


American Clean Power Week

Our Bighorn Solar project was featured during American Clean Power Week, 2021.



We’ve received lots of interest in our Bighorn Solar project, so we’ve put together a list of the most commonly asked questions, and their answers.


Get in touch

If you’d like to find out more about this project, email info@lightsourcebp.com, or fill out the form below. We aim to get back to you within five working days.

In the community

We construct our solar farms with a view to improving soil health, fostering biodiversity, and strengthening local economies. From ecological assessments to community engagement, we do our best to create solar farms that local communities can be proud of.

Learn more about our communities

Take a look at some of our other projects

We work with businesses and communities around the world to create low carbon, solar energy projects that make a difference.

See more of our USA solar projects