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Constellation

Constellation is the nation's largest producer of clean, low-carbon energy delivering around-the-clock reliability needed to power America's growing ...
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Last verified 5 days ago
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Constellation is the nation's largest producer of clean, low-carbon energy delivering around-the-clock reliability needed to power America's growing ...

Employees

5001-10000

Funding

Growth ($24.5M)

G2 Rating

4.3/5 · 274 reviews

G2 Category

Energy Supplier

AI Classification

EnergyUtilityEnergy SupplierHousing Utility CompanyNuclear Power CompanyGreen Energy SupplierElectric Utility Company

Constellation is the nation's largest producer of clean, reliable energy, supplying electricity and natural gas to residential, small business, and commercial customers across the U.S., with operations spanning nuclear power generation, retail energy supply, and large-scale commercial energy efficiency solutions.

Deep Intelligence

Account Scoring

Low Churn Risk
  • Strong reviews (4.3/5, 274 ratings)
  • Growth — mature / stable
  • Thin digital footprint

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Social Links

Linkedin

Competitors

Retail Energy ProvidersDirect Energy

Constellation is one of 2,669 B2B companies in the Kustiq directory.

Constellation sits among 4 utility companies in our Energy directory.

Similar profiles: Electricchoice, Avalara, Dai, and Electricityrates.

Both sit in the 5001-10000 headcount band, and both are at Growth. See Constellation vs Avalara side by side.

Both sit in the 5001-10000 headcount band, and both are at Growth. See Constellation vs Dai side by side.

How Kustiq built this profile

How this profile was built

  • Live web rendering via Browserless headless Chrome, not a stale cached scrape.
  • Search intelligence via Serper API across the company site, LinkedIn, press, and GitHub.
  • Claude only picks the buckets. It never decides facts.
  • 12-factor churn engine. Deterministic score, zero LLM at scoring time.
  • SMTP RCPT TO handshake on every contact, at delivery time on full profiles (paid plan).

This profile was built from search coverage across the live web and a review parse of 274 ratings on .

Read the full methodology in our LLM-readable reference or compare against the deterministic-vs-AI framework.

Frequently asked questions

How many employees does Constellation have?
Constellation has 5001-10000 employees, based on public sources read at the last profile run.
What industry is Constellation in?
Constellation is a Energy company in the Utility segment. Related industry tags from the profile: Energy Supplier, Housing Utility Company, Nuclear Power Company, Green Energy Supplier.
Who are Constellation's competitors?
Public sources list Retail Energy Providers and Direct Energy as Constellation competitors. The list comes from live search coverage at the last profile run, not a static database.
Is this profile actually verified, or just generated by AI?
The structured fields come from a hybrid pipeline. Facts (location, employee range, funding, tech stack) come from live web rendering plus Serper search across the company site, LinkedIn, press, and GitHub. Claude only picks the buckets: vertical, segment, growth signal. It never decides facts. Contact emails on full profiles pass an SMTP RCPT TO handshake at delivery time.
How is this different from a contact database?
Kustiq profiles one company at a time, live from the web when you ask. Tools like Apollo and ZoomInfo rent access to a 50M+ row pool that ages every quarter. Different shape, different price, and the freshness story is the opposite.
What does "track this profile" do?
Tracking saves Constellation to your free dashboard so you can re-run the full pipeline on it anytime. Free with a signed-in account: 3 profiles a week, no card.
Can the profiled company remove this page?
Any company in the Kustiq directory can request removal at /trust#removal. Removed profiles return 410 Gone and stay out of search.
How fresh is the data?
Constellation was last verified 5 days ago. The data refreshes when anyone re-runs the profile (the Re-run now button above does exactly that), and we run the SMTP handshake on contacts when you ask for them, not when we cached the row. The freshness card above the profile shows the exact relative date for the current visit.
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