@Calpine

Calpine Corp. delivers clean, reliable electricity in the US/Canada & we’re hiring professionals to join our team. Business unit of @ConstellationEG.

 Nationwide
calpine.com/
Joined March 2013
  • Tweets3.5K
  • Following98
  • Followers5.9K
2KMedia
We welcomed @EnergyUnderSec to The Geysers in Northern California for a look at the tech and people that power the world’s single largest geothermal energy complex. Proud to show @ENERGY how this asset generates enough reliable electricity to power 750,000 homes and businesses.
3
14
683
More nuclear energy is coming to PJM. Our agreement with @Google will add 890 MW of reliable, emissions-free capacity – equivalent to a new reactor – backed by $4.3B+ in private investment. Deal will also sustain and create thousands of jobs. More info ↙️ bit.ly/3VSmzfA
13
75
32
369
29,445
Announcing a long-term agreement with @amazon that supports significant infrastructure improvements and new emissions-free generation at our Calvert Cliffs Clean Energy Center. More info ↙️ bit.ly/4hirv5S
Image of the Calvert Cliffs Clean Energy Center by a body of water. The text on the image reads: 'Constellation and Amazon Announce 20-Year PPA, Adding 190 MW of Nuclear Capacity at Calvert Cliffs Clean Energy Center.' Constellation logo is visible in the top left corner.

ALT Image of the Calvert Cliffs Clean Energy Center by a body of water. The text on the image reads: 'Constellation and Amazon Announce 20-Year PPA, Adding 190 MW of Nuclear Capacity at Calvert Cliffs Clean Energy Center.' Constellation logo is visible in the top left corner.

3
13
8
66
9,473
We continue to honor the victims, families, survivors, and first responders whose lives were forever impacted by 9/11. The events of that day will always be part of our nation's story. So, too, will the character, courage, and determination that emerged in its aftermath.
A graphic by Constellation recognizing the 25th anniversary of September 11, 2001. Includes a quote from Joe Dominguez, Chairman, President, and CEO of Constellation, about unity and remembrance. The background features the American flag pattern and two blue beams of light symbolizing the Twin Towers.

ALT A graphic by Constellation recognizing the 25th anniversary of September 11, 2001. Includes a quote from Joe Dominguez, Chairman, President, and CEO of Constellation, about unity and remembrance. The background features the American flag pattern and two blue beams of light symbolizing the Twin Towers.

1
3
561
As we strengthen our ability to serve customers and support reliability, we're announcing a deal to acquire the Rhode Island State Energy Center, a 609-MW combined-cycle electric generation facility with a key role in powering New England. More info ↙️ bit.ly/4A7OVSE
Aerial view of the Rhode Island State Energy Center surrounded by greenery and trees with autumn foliage. A body of water is visible in the background under a clear sky.

ALT Aerial view of the Rhode Island State Energy Center surrounded by greenery and trees with autumn foliage. A body of water is visible in the background under a clear sky.

2
1
5
702
Real-time power traders like Jordan Humphrey monitor energy markets, weather, grid conditions, and generation availability to make key decisions that help ensure electricity is delivered where it's needed most. Learn more about her role in our latest “People Who Power Us”.
2
6
693
AI requires around-the-clock, clean power, and under CEO Joe Dominguez’s leadership, we produce more of that valuable commodity than any company in America. That's a big reason why @TIME has named him to the #TIME100AI 2026, recognizing the world's most influential people in AI.
TIME magazine cover image featuring a "TIME 100/AI" edition headline. It shows a Joe Dominguez wearing a suit and tie, with the text "Constellation Chairman, President and CEO, Joe Dominguez" on the lower left.

ALT TIME magazine cover image featuring a "TIME 100/AI" edition headline. It shows a Joe Dominguez wearing a suit and tie, with the text "Constellation Chairman, President and CEO, Joe Dominguez" on the lower left.

1
1
1
9
698
We generate more reliable and clean electricity than anyone in America – enough to power 27M homes. Our people are the engine behind it all, helping us deliver coast-to-coast power, tailored customer solutions and meaningful community impact. That's how We Bring the Energy.
3
5
16
811
The Geysers in Northern California is the largest geothermal energy operation in the world. Our 2026 Sustainability Report details how these facilities generate enough reliable, renewable electricity to power a city the size of San Francisco. ↙️ constellationenergy.com/csr
This image is an informational graphic titled "Get to Know: The Geysers Geothermal Complex" by Constellation. It features a diagram illustrating how geothermal energy is generated, showing components like a cooling tower, turbine, generator, steam, hot water, and injection well. Accompanying text highlights that 13 plants at the complex generate approximately 5 terawatt-hours annually and avoid around 4 million metric tons of CO2.

ALT This image is an informational graphic titled "Get to Know: The Geysers Geothermal Complex" by Constellation. It features a diagram illustrating how geothermal energy is generated, showing components like a cooling tower, turbine, generator, steam, hot water, and injection well. Accompanying text highlights that 13 plants at the complex generate approximately 5 terawatt-hours annually and avoid around 4 million metric tons of CO2.

1
3
1
9
668
Big milestone at the world’s largest operating geothermal energy complex. We’ve completed a 25 MW expansion at The Geysers, enough to power ~25,000 California homes with reliable, clean energy. 18 MW to @CleanPowerInfo, 7 MW already serving MCE. constellationenergy.com/news…

The Geysers Geothermal Complex Completes 25-Megawatt Expansion Project, Strengthening California...

The addition builds on Calpine's continued investments in The Geysers to support California’s renewable energy goals.

constellationenergy.com
3
4
528
We joined @GregAbbott_TX and state and local leaders to mark completion of the 460 MW Pin Oak Creek Energy Center. Built with support from the Texas Energy Fund, this project will strengthen the ERCOT grid with reliable, fast starting, dispatchable power when it’s needed most.
1
5
2
19
1,175
We’ve earned the #1 spot on @barronsonline list of the Most Sustainable U.S. Companies. Sustainability is central to who we are, and this honor affirms how clean energy leadership and a commitment to reliable operations go hand-in-hand in support of our customers and communities.
2
3
1
16
1,488
Celebrated the completion of the 105 MW Pastoria Solar Project with leaders from @CA_DWR, labor partners and local officials. DWR’s largest renewable purchase to date supports decarbonizing ops by 2035 while reliably supplying water to 27M Californians. 📰bit.ly/3OoGC22
1
2
9
510
With 70% of our team living in Lake County, it was an honor to attend Lakeport Unified School District’s Reach Higher Day. We spent the day telling students why we chose to work at Calpine and gave them career and college advice. It was great to meet these young, bright minds!
1
71
Calpine is proud to share that we helped City Grazing reach its end-of-year goal with our donation match! 🐐 We are honored to give back to local organizations where our employees live and work.
1
91
Constellation now has 1,100+ MW under contract to power CyrusOne data centers in Texas – the latest a 380-MW agreement to support a new CyrusOne facility adjacent to @Calpine’s Freestone Energy Center about 80 miles southwest of Dallas. Learn more ⬇️ constellationenergy.com/news…

Constellation and CyrusOne Announce Agreement to Support New Data Center Facility at Freestone...

Constellation announced today that Calpine LLC, a business unit of Constellation, signed a new 380-megawatt agreement with Dallas-based CyrusOne to connect and serve a new data center adjacent to the...

constellationenergy.com
4
17
918
We’ve signed a 20-year deal with the @Titans to operate new @NissanStadium's onsite energy plant, providing indoor spaces with clean air efficiently and reliably. More about our role as the Preferred Energy Source of Nissan Stadium and the Titans ↙️ bit.ly/4qpEFiE
Exterior rendering of new Nissan Stadium at night.

ALT Exterior rendering of new Nissan Stadium at night.

Wide shot of the under-construction energy plant at Nissan Stadium.

ALT Wide shot of the under-construction energy plant at Nissan Stadium.

1
2
17
1,169
Thank you @Calpine for this week's tour of the Geysers, the California geothermal power complex that incorporates numerous power plants (like the one pictured), a >100-mile pipeline network, and its own electric distribution system.
2
2
16
1,074
📅 Mark your calendars! From Dec. 3-31, your donation to @EduFoundHC will be matched by Calpine Corporation up to $10,000! Let’s make a difference in the lives of Harris County students, families and educators. Visit fundraise.givesmart.com/e/qN… to donate. 💪 #GivingTuesday
2
3
235
Good morning Houston ! Please share the following back to school supply give away thank you @Calpine @ValeroEnergy and @RepMorales145 !!! Tomorrow morning at 8:00 am. Please advise families to get there early !
4
6
347
Load more