AI Energy Providers Comparison
Compare energy providers powering AI data centers - capacity, energy type, sustainability, key partnerships, and financial outlook.
TL;DR
Comparing Constellation Energy, NextEra Energy, Crusoe Energy, Lancium, Oklo, NuScale Power across 32 features in 8 categories.
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| Feature |  Constellation Energy |  NextEra Energy |  Crusoe Energy |  Lancium |  Oklo |  NuScale Power |
|---|---|---|---|---|---|---|
| General | ||||||
| Headquarters | Baltimore, MD | Juno Beach, FL | San Francisco, CA | Houston, TX | Santa Clara, CA | Portland, OR |
| Founded | 2022 (spun off from Exelon) | 1925 | 2018 | 2017 | 2013 | 2007 |
| Company Type | Public (NASDAQ: CEG) | Public (NYSE: NEE) | Private (~$10B valuation) | Private | Public (NYSE: OKLO) | Public (NYSE: SMR) |
| Business Model | Utility / Power Generator | Utility / Renewable Developer | AI Cloud + Data Center Operator | Clean Energy Campus Developer | Advanced Reactor Developer | Small Modular Reactor Developer |
| Energy Type & Source | ||||||
| Primary Energy Source | Nuclear | Wind & Solar | Natural Gas (Stranded/Flared) + Renewables | Wind + Solar + Battery Storage | Advanced Fission (Fast Reactor) | Nuclear (Small Modular Reactor) |
| Nuclear Power | ||||||
| Wind Energy | ||||||
| Solar Energy | ||||||
| Natural Gas | ||||||
| Battery Storage | ||||||
| Capacity & Scale | ||||||
| Total Generation Capacity | ~32 GW (largest US nuclear fleet) | ~73 GW (largest renewable fleet) | ~3 GW (planned by 2026) | ~1.2 GW (Clean Campus) | Pre-commercial (75 MWe per unit) | Pre-commercial (77 MWe per module) |
| AI-Dedicated Capacity | ~2+ GW (Crane Clean Energy Center + contracts) | ~15 GW planned for data centers by 2035 | 1.2 GW (Abilene campus) + 1.8 GW (Wyoming) | 1.2 GW (Abilene Clean Campus) | 12 GW pipeline (Switch deal through 2044) | 6 GW (ENTRA1/TVA deployment program) |
| Largest Single Facility | Crane Clean Energy Center (835 MW) | GW-scale data center hubs (planned) | 1.2 GW Abilene, TX campus | 1.2 GW Abilene Clean Campus | 1.2 GW Meta campus (Ohio, planned) | 924 MWe (12-module plant) |
| Scalability(?) | Existing fleet + restart projects | Massive pipeline (up to 30 GW by 2035) | Rapid expansion with VC funding | Modular campus design | Modular reactor deployments | Scalable 1-12 module configurations |
| AI Data Center Infrastructure | ||||||
| Owns/Operates AI Data Centers | ||||||
| GPU Cloud Services | ||||||
| GPU Support (Nvidia) | N/A (power only) | N/A (power only) | Up to 400,000 GB200 GPUs | Campus hosts GPU tenants | N/A (power only) | N/A (power only) |
| Co-located Power & Compute(?) | Planned | Planned | ||||
| Key AI Partnerships | ||||||
| Microsoft | 20-year PPA (Crane restart) | |||||
| Landmark energy & AI partnership (3.5 GW+) | ||||||
| Meta | 2.5 GW across 11 PPAs | 1.2 GW nuclear campus (Ohio) | ||||
| Nvidia | Strategic investor + GPU partner | |||||
| Other Major Partners | Calpine (acquired Jan 2026) | Basin Electric, multiple utilities | Blue Owl Capital ($3.4B JV) | Crusoe (campus tenant), Blackstone ($500M) | Switch (12 GW through 2044) | ENTRA1 Energy, TVA (6 GW program) |
| Sustainability & Carbon Profile | ||||||
| Carbon-Free Energy % | ~90% (largest clean energy producer in US) | ~70%+ (largest wind/solar operator) | Partial (reduces methane flaring by ~99%) | High (wind + solar + storage) | 100% (zero-emission nuclear) | 100% (zero-emission nuclear) |
| Net Zero Target | 2040 | 2045 | Not disclosed | Not disclosed | Carbon-free by design | Carbon-free by design |
| Uses Recycled/Waste Energy(?) | ||||||
| Financial Overview | ||||||
| Revenue (Latest) | ~$25B (2024) | ~$24B (2024) | ~$1B (2025 projected) | Not disclosed | Pre-revenue | Pre-revenue |
| Market Cap / Valuation | ~$75B+ | ~$150B+ | ~$10B (Series E, Oct 2025) | Not disclosed | ~$5B+ | ~$3B+ |
| Recent Major Funding / Deal | Calpine acquisition (Jan 2026) | Google partnership (Dec 2025) | $1.375B Series E (Oct 2025) | $500M from Blackstone | Meta 1.2 GW deal (Jan 2026) | ENTRA1/TVA 6 GW program (Sep 2025) |
| Technology Readiness | ||||||
| Commercial Operations | ||||||
| NRC / Regulatory Approval | Fully licensed fleet | Fully licensed fleet | N/A | N/A | Under review (resubmitted) | First NRC-certified SMR design |
| Expected AI Power Delivery(?) | Now (existing fleet) | Now + 2026-2028 pipeline | Now (Abilene mid-2026 full scale) | 2025 (Phase 1 operational) | Late 2020s (first reactor) | Late 2020s (first commercial plant) |
Frequently Asked Questions
What is the difference between Constellation Energy and NextEra Energy?
Constellation Energy and NextEra Energy are both leading tools in this category but serve different use cases. Our comparison breaks down their differences across performance, pricing, reliability, and ease of use — so you can pick the right one for your workflow.
Which is better: Constellation Energy or NextEra Energy?
The answer depends on your use case. Constellation Energy typically excels for users who prioritise ecosystem integrations and ease of onboarding. NextEra Energy tends to lead on performance depth. See our full score breakdown and "choose if" guide above for a definitive recommendation.
How is We Compare AI's comparison data collected?
All data is collected independently by our team of AI specialists using a standardised benchmark methodology. We test each tool directly, track public pricing from official sources, and update scores when models release significant updates. No vendor pays to appear or influence their ranking.
How does Constellation Energy compare to Crusoe Energy?
Constellation Energy and Crusoe Energy target overlapping use cases but differ in pricing models and feature sets. Our comparison table above includes Crusoe Energy alongside Constellation Energy and NextEra Energy so you can evaluate all options side by side.
Is there a free version of Constellation Energy?
Most major AI tools including Constellation Energy offer a free tier with usage limits. Check our pricing comparison above for exact plan details, token limits, and cost-per-million-token breakdowns for Constellation Energy, NextEra Energy, Crusoe Energy, Lancium, Oklo, NuScale Power.
Last updated: 2026-02-11 · How we collect data →