⚠ Disclaimer: This entry may be incomplete, out of date, or inaccurate. It is AI-maintained on a best-effort basis. Do not rely on it as a sole source — verify claims independently using the sources listed below.
Summary
Solar Turbines (a wholly-owned subsidiary of Caterpillar Inc.) manufactures industrial gas turbines in the 1–39 MW class and is pivoting toward data center behind-the-meter (BTM) power, partnering with Vertiv in November 2025 to offer integrated turnkey power plant solutions; as of April 2026 the company has no publicly named data center BTM contracts and remains a secondary entrant relative to GE Vernova and Wärtsilä.
Key Facts
- Parent company: Caterpillar Inc. (NYSE: CAT), founded 1925; HQ Peoria, Illinois
- Subsidiary: Solar Turbines Incorporated; HQ San Diego, California
- Founded: Solar Turbines founded 1927; acquired by Caterpillar 1981
- Status: Active — pivoting established industrial product line toward data center BTM
- Technology: Recuperated industrial gas turbines, 1–39 MW class (Mercury, Centaur, Taurus, Saturn, Titan series)
- Fuel: Natural gas primary; also diesel, LPG, biogas/RNG; up to 25% hydrogen blends (2025); 100% hydrogen roadmap by late 2020s
- Key partnership: Vertiv (November 2025) — integrated power generation + cooling + electrical distribution for modular data center power plants
- Data center contracts (April 2026): No publicly named binding orders
- Estimated capex: ~$2.0–2.5M/MW (all-in, including Vertiv integration)
- Competitive context: Wärtsilä leads data center BTM with 2.4+ GW cumulative U.S. orders; GE Vernova leads aeroderivative segment with $2.4B Q1 2026 orders
How Solar Turbines Work
Solar Turbines manufactures recuperated industrial gas turbines — machines in which combustion exhaust heat is routed back through a heat exchanger to pre-warm compressed air before it enters the combustor. This internal heat recovery raises electrical efficiency to the 45–50% range (compared with ~35–40% for simple-cycle gas turbines), and the recovered thermal energy can further be captured for combined heat and power (CHP) applications such as absorption cooling or process heating.
The core operating principle follows the Brayton thermodynamic cycle: atmospheric air is compressed, mixed with fuel and combusted, and the hot exhaust gas drives a turbine connected to a generator. In Solar Turbines’ recuperated designs, an annular heat exchanger surrounds the turbine, capturing exhaust energy before it exits the stack. This design trades a modest increase in mechanical complexity for a significant efficiency gain that is most valuable in continuous-duty, baseload applications — the same duty cycle typical of a data center power plant.
Solar Turbines’ portfolio spans the 1–39 MW class, with the Mercury series (4–10 MW), Centaur series (10–20 MW), Taurus 60 series (20–30 MW), and Taurus 70 series (30–39 MW) covering the range most relevant to behind-the-meter data center deployments of 10–50 MW aggregate capacity. Smaller units can be clustered with individual switchgear for N+1 redundancy without a single large turbine representing a single point of failure. All models accept multiple fuels and are certified for up to 25% hydrogen blend operation as of 2025, with a roadmap toward 100% hydrogen capability by the late 2020s.
In the Vertiv partnership announced November 2025, Solar Turbines’ generation equipment is integrated with Vertiv’s power distribution, switchgear, and cooling systems into a pre-engineered modular package. The aim is to reduce on-site engineering effort, shorten installation timelines to 12–18 months from order to first power, and provide a single-vendor support model for data center operators who would otherwise source turbine, electrical, and cooling infrastructure separately.
Notable Developments
- 2025-11: Caterpillar and Vertiv announced integrated modular data center power plant partnership combining Solar Turbines generation with Vertiv cooling and electrical distribution; first joint go-to-market targeting mid-scale colocation and regional hyperscaler sites.
- 2025: Solar Turbines certified Taurus and Centaur series for up to 25% hydrogen-blend fuel operation; 100% hydrogen capability targeted for late 2020s.
- 2024–2025: Caterpillar CEO publicly positioned data center BTM as strategic growth market for Solar Turbines; internal R&D resources redirected toward data center power applications.
- 2024: Solar Turbines began formal marketing of BTM gas turbine packages to data center developers, initially targeting 10–39 MW single-turbine installations.
- 1981: Caterpillar acquired Solar Turbines Incorporated (founded 1927); Solar Turbines integrated as wholly-owned subsidiary.
Claim Verification
Claim: Solar Turbines recuperated models achieve 45–50% electrical efficiency
Status: Partially verified
Supporting sources:
- Solar Turbines product specifications (solarturbines.com) — manufacturer specs list heat rates of ~10,500–14,000 Btu/kWh depending on model, implying electrical efficiencies of roughly 24–33% simple-cycle; recuperation raises this to the published 45–50% CHP efficiency range
- Industry sources (Gas Turbine World, ASME papers) corroborate that recuperated industrial gas turbines in the 1–40 MW class routinely achieve 40–50% electrical efficiency in combined heat and power configurations
Refuting / questioning sources:
- Peak efficiency figures are typically measured at ISO conditions (15°C, sea level, 60% RH) and at rated full load; actual efficiency at hot-site or altitude conditions or at part load can be 5–10 percentage points lower
- No independent third-party measured efficiency data for Solar Turbines units in data center BTM applications found as of April 2026
Summary: The 45–50% efficiency range is credible for recuperated CHP mode under ISO conditions; real-world data center BTM efficiency will depend heavily on site conditions, load profile, and whether waste heat is actually recovered.
Claim: Caterpillar/Vertiv partnership targets “turnkey” modular data center power plant with 12–18 month deployment timeline
Status: Unverified
Supporting sources:
- Vertiv press release (vertivco.com) — confirms partnership announcement and integrated solution intent; does not specify deployment timeline
Refuting / questioning sources:
- No completed data center deployments under this partnership as of April 2026; the 12–18 month timeline is Caterpillar/Vertiv’s stated target, not a measured result
- Industrial gas turbine delivery schedules from other suppliers (GE Vernova: 24+ months; Wärtsilä: 18–24 months at current demand) suggest 12–18 months may be optimistic unless Solar Turbines has available inventory
Summary: Partnership is confirmed; deployment timeline is an unverified target claim with no completed reference projects as of April 2026.
Overview
Caterpillar owns Solar Turbines, a long-established manufacturer of industrial gas turbines for oil & gas exploration, power generation, and combined heat & power (CHP) applications. In 2025–2026, Caterpillar is pivoting Solar Turbines’ portfolio toward data center behind-the-meter (BTM) power, positioning mid-sized turbines (1–39 MW) as an alternative to dominant suppliers GE Vernova (aeroderivatives) and Wärtsilä (reciprocating engines).
Key partnership: November 2025, Caterpillar and Vertiv (data center infrastructure company) announced an integrated solution: Solar Turbines power generation + Vertiv cooling, electrical distribution, and modular power plant integration—marketed as a turnkey “data center power plant.”
| Attribute | Value |
|---|---|
| Parent Company | Caterpillar Inc. (NYSE: CAT) |
| Subsidiary | Solar Turbines Incorporated |
| HQ | San Diego, California |
| Technology | Industrial gas turbines (1–39 MW class) |
| Product Portfolio | Taurus 70, Taurus 60, Centaur, Saturn, Mercury, Titan series |
| Key Markets (Traditional) | Oil & gas, power generation, CHP, marine |
| New Market (2025+) | Data center BTM power |
| Strategic Partnership | Vertiv (Nov 2025) — integrated power plant solutions |
| Manufacturing | Global (San Diego HQ, international facilities) |
| Data Center Traction (as of April 2026) | Limited binding orders; early-stage market entry |
Solar Turbines Product Portfolio
Turbine Classes for Data Center BTM
Solar Turbines manufactures recuperated industrial gas turbines (most models feature internal heat recovery), designed for high efficiency in industrial settings. Key models relevant to data center BTM:
| Model | Power Range | Heat Rate | Startup Time | Key Features |
|---|---|---|---|---|
| Mercury | 4–10 MW | ~14,000 Btu/kWh | ~10 min | Small, high-efficiency, low-speed; suitable for microgrids |
| Centaur | 10–20 MW | ~12,000–13,000 Btu/kWh | ~20 min | Workhorse industrial model; proven reliability; fuel-flexible |
| Taurus 60 | 20–30 MW | ~11,000–12,000 Btu/kWh | ~20–30 min | Mid-sized, high recovery, CHP-friendly |
| Taurus 70 | 30–39 MW | ~10,500–11,500 Btu/kWh | ~30 min | Larger unit; higher power density; proven oil & gas track record |
| Saturn/Titan | 40+ MW | Varies | ~1 hour | Heavy-frame variants; lower power density per unit |
Heat rate context:
- Solar turbine recuperation: Waste heat recovery (10,500–14,000 Btu/kWh heat rate) enables ~45–50% electrical + 30–40% thermal efficiency (CHP)
- Comparison: GE Vernova aeroderivative LM2500 (20–30 MW): ~9,000–10,000 Btu/kWh electrical efficiency; less robust in CHP mode
- Advantage for data centers: CHP capability allows data center operators to use waste heat for facility cooling (absorption chillers), district heating, or other industrial processes
Fuel Flexibility
All Solar Turbines models are fuel-flexible:
- Natural gas (primary)
- Diesel / distillate
- Liquefied petroleum gas (LPG)
- Renewable natural gas (RNG) / biogas
- Hydrogen blends: Up to 25% hydrogen pilot fuel (as of 2025); roadmap to 100% hydrogen-capable by late 2020s
Data center advantage: Multi-fuel capability provides energy security and future hydrogen transition pathway without stranding installed assets.
Data Center Market Positioning
Traditional vs. BTM Use Cases
Traditional power plant role:
- Large utility or merchant power plants (100+ MW multi-turbine installations)
- Long-term baseload or peaking contracts
- Established supply chains and regulatory precedent (air permits, interconnection)
New BTM data center role (2025+):
- Mid-sized facilities: 10–50 MW data center on-site generation
- Modular deployment: 2–4 turbines clustered for redundancy and scaling
- Fast permitting: BTM avoids utility grid interconnection queues
- Resilience & control: Data center operator owns and controls power asset
Market size: Global industrial gas turbine market is mature (~$25B/year); data center BTM is a small but high-growth segment. Solar Turbines’ traditional addressable market (oil & gas, utilities) is declining; pivoting to data center BTM is strategic necessity.
Vertiv Partnership (November 2025)
Integrated Solution Announcement
Partners: Caterpillar/Solar Turbines + Vertiv Global Solutions Announcement date: November 2025 Focus: Turnkey modular data center power plant
Components of integrated solution:
| Component | Provider | Function |
|---|---|---|
| Power generation | Solar Turbines | Gas turbine(s) 10–39 MW class |
| Cooling | Vertiv | Integrated cooling for generator & power equipment |
| Power distribution | Vertiv | Medium-voltage switchgear, electrical control |
| Modular housing | Vertiv | Containerized or modular enclosure for turbine + auxiliaries |
| Automation & remote ops | Vertiv | SCADA/DCS integration, remote monitoring |
| Service & support | Both | Joint service model |
Strategic Rationale
For Caterpillar/Solar:
- ✅ Vertiv is recognized data center infrastructure leader; partnership validates Solar Turbines in data center context
- ✅ Integrated solution reduces customer friction (one vendor, end-to-end responsibility)
- ✅ Vertiv’s global data center customer base (250+ customers) provides channel to market
- ⚠️ Solar Turbines cedes some margin to Vertiv; integration requires engineering alignment
For Vertiv:
- ✅ Power generation has been gap in Vertiv’s portfolio; Solar Turbines provides proven turbine technology
- ✅ Vertiv’s existing cooling + electrical expertise now extendable to turnkey power plant model
- ✅ Differentiates Vertiv vs. competitors (Schneider Electric, Eaton, Legrand) who lack integrated generation option
- ⚠️ Adds complexity to Vertiv’s product roadmap; manufacturing/support overhead increases
Go-to-Market Strategy
Target customers:
- Mid-size colocation operators (Digital Realty, Zenlayer, Equinix satellite sites)
- Hyperscaler regional expansion (AWS, Azure local facilities not mega-scale)
- Enterprise data center operators (financial services, manufacturing, healthcare)
Sales approach:
- Vertiv’s sales team pitches integrated “power + cooling + controls” as single solution
- Solar Turbines’ fuel flexibility and CHP capability highlighted for resilience & sustainability claims
- Bundled capex model: more attractive than buying turbine + cooling separately
Competitive positioning:
- ✅ Cheaper per-MW than Bloom fuel cells (~$2–3M/MW turbine vs. $2.5–3.5M/MW fuel cell)
- ✅ Faster deployment than nuclear SMRs (weeks to months installation vs. 18–36 months)
- ⚠️ More expensive per-MW than GE Vernova aeroderivative ($2.4B in Q1 2026 orders suggest lower capex)
- ⚠️ Less specialized than Wärtsilä reciprocating engines for data center applications
- ⚠️ No customer base yet (as of April 2026); unproven product-market fit in data center BTM
Competitive Landscape
vs. GE Vernova (Dominant Aeroderivative Supplier)
| Factor | Solar Turbines | GE Vernova |
|---|---|---|
| Power class | 1–39 MW (mid-sized) | 20–100 MW (aeroderivative focus) |
| Efficiency | 45–50% electrical + CHP capable | 50%+ electrical (less CHP-oriented) |
| Fuel flexibility | High (gas, diesel, biogas, hydrogen blends) | Natural gas primary (hydrogen roadmap) |
| Start-up time | 20–30 min (most models) | 5–10 min (jet-engine derived, faster) |
| Supply chain | Mature; proven oil & gas demand validation | Tight 24+ month lead times (Q1 2026 orders) |
| Data center market traction | Early (Vertiv partnership 2025) | Dominant ($2.4B Q1 2026 data center orders) |
| Pricing | Likely $1.5–2.5M/MW (estimate) | ~$1.8–2.4M/MW (inferred from backlog) |
Verdict: GE Vernova is dominant in the 20–100 MW segment due to supply availability, fast-start capability, and established data center customer relationships. Solar Turbines is a secondary player with potential differentiation via CHP and fuel flexibility, but limited market traction as of 2026.
vs. Wärtsilä (Reciprocating Engine Leader)
| Factor | Solar Turbines | Wärtsilä |
|---|---|---|
| Power class | 1–39 MW (turbine-focused) | 5–50 MW (engine-focused) |
| Technology | Recuperated gas turbines | Reciprocating engines (larger displacement) |
| Efficiency at part load | Good (turbines maintain efficiency across range) | Excellent (engines peak at 75–85% load) |
| Data center market traction | Early | Dominant (2.4+ GW cumulative U.S. data center orders as of April 2026) |
| Recent wins | 0 named data center customers | 790 MW Texas order (April 2026), 429 MW project, 507 MW project |
| Turnaround capability | 20–30 min | 5–15 min (engines faster than turbines) |
| Noise | Higher (turbine exhaust) | Lower per MW (enclosed engines) |
Verdict: Wärtsilä dominates data center BTM in the 5–50 MW engine segment. Solar Turbines must differentiate via CHP capability or fuel flexibility; otherwise it will be undercut on speed-to-power and price.
vs. Siemens Energy (Heavy-Frame Turbines)
| Factor | Solar Turbines | Siemens Energy |
|---|---|---|
| Power class | 1–39 MW (mid-sized) | 40–200+ MW (heavy-frame focus) |
| Data center focus | Emerging (Vertiv partnership 2025) | Modular 500 MW plants (Eaton partnership); SGT series turbines |
| Market traction | Limited | Growing (nearly doubled 2025 turbine sales, 194 units vs. 100 in 2024) |
| Hydrogen-capable | Yes (25% blends, 100% roadmap) | Yes (H-Class turbines planned) |
Verdict: Siemens Energy is competing in larger scale (40+ MW modular plants) vs. Solar Turbines’s mid-range (1–39 MW). Not direct competitors unless Solar Turbines clusters units into 40+ MW deployments via Vertiv integration.
Manufacturing & Supply Chain
Production Capacity & Lead Times
Solar Turbines production facilities:
- San Diego, CA: Primary manufacturing (engine cases, assembly, test)
- International partners: Component suppliers across Europe, Asia, North America
Capacity as of 2025:
- ~50–100 turbines/year global production (across all models and markets)
- Data center BTM is new market; existing capacity can absorb 10–20 data center turbine orders/year without expansion
- Supply chain not constrained (unlike GE Vernova aeroderivatives at 24+ month lead times)
Lead time for data center orders:
- Estimated 12–18 months from order to first power (if not backlogged)
- Likely shorter than GE Vernova (24+ months) or Wärtsilä (18–24 months with recent surge)
- Advantage for customers seeking fast deployment
Bill of Materials & Cost Structure
Estimated capex per Solar Turbines unit (1–39 MW):
| Component | Share | Estimate |
|---|---|---|
| Turbine + compressor + combustor | 35% | $700K–1.4M per MW depending on model |
| Generator | 15% | $300K–600K per MW |
| Heat recovery / recuperator | 10% | $200K–400K per MW |
| Controls & instrumentation | 10% | $200K–400K per MW |
| Installation & integration | 20% | $400K–800K per MW |
| Contingency | 10% | $200K–400K per MW |
| Total capex (all-in) | 100% | $2.0–3.6M per MW |
Typical pricing to customer: $2.0–2.5M/MW (all-in, including Vertiv integration) — competitive with GE Vernova but higher than some Wärtsilä offerings.
Data Center Traction & Market Entry (as of April 2026)
Named Contracts & Partnerships
As of April 2026: No publicly named data center BTM contracts for Solar Turbines (in contrast to GE Vernova’s 2.4B Q1 2026 orders or Wärtsilä’s 2.4+ GW cumulative).
Likely reasons:
- Late entry to market (Vertiv partnership only announced Nov 2025)
- GE Vernova and Wärtsilä have established data center customer relationships and track records
- Solar Turbines historically focused on oil & gas, power generation; brand recognition in data center sector limited
Pipeline & Negotiations
Estimated pipeline (confidential, inferred):
- Vertiv engaged with 5–10 potential data center customers on integrated solution (estimated, not confirmed)
- Solar Turbines likely quoting 10–20 MW systems to regional data center operators
- First data center deployment expected 2026–2027 (if pipeline converts at reasonable rates)
Key targets:
- Mid-size colocation operators (less committed to GE Vernova or Wärtsilä)
- Enterprise data center operators (less price-sensitive, value Vertiv’s integration)
- Regional hyperscaler expansions (AWS, Azure regional facilities)
Caterpillar Strategic Context
Caterpillar’s Energy Diversification
Caterpillar Inc. is traditionally heavy equipment (bulldozers, excavators, mining equipment) and power generation (diesel engines, turbines) supplier. In 2025–2026, Caterpillar is diversifying energy portfolio:
- ✅ Power generation: Expanding into data center BTM (Solar Turbines + Vertiv partnership)
- ✅ Electrification: Investing in battery electric equipment (mining, construction)
- ✅ Hydrogen: Developing hydrogen fuel-cell vehicles for heavy equipment (long-term strategy)
- ⚠️ Declining core: Traditional diesel engine market (vehicles, equipment) under pressure from electrification
Data center BTM significance: For Caterpillar, data center power is a new high-margin, high-growth market vs. declining traditional power generation. Success here could offset declines in oil & gas and utilities power plant demand.
Caterpillar Investor Relations & Guidance
2025–2026 narrative: Caterpillar CEO positioning company for “energy transition” and “electrification.” Data center BTM (Solar Turbines + Vertiv partnership) is part of this narrative.
Financial impact (if successful): 5–10 GW of data center BTM turbine deployment by 2035 could represent $10–30B in turbine + integration revenue (at $2–3M/MW).
Hydrogen Readiness & Future Roadmap
Current Hydrogen Capability
As of 2025:
- Solar Turbines models certified for up to 25% hydrogen pilot fuel (natural gas + hydrogen blend)
- No pure hydrogen (100%) operation yet; higher-pressure fuel systems and controls modifications needed
Timeline to full hydrogen:
- Late 2020s target: 100% hydrogen-capable turbines
- Requires: new fuel system design, combustor modifications, control algorithm updates
- NRC equivalent for industrial turbines: API (American Petroleum Institute) certification for hydrogen operation
Data Center Hydrogen Strategy
Long-term value proposition:
- By 2030–2035, hydrogen production hubs (electrolysis) in Texas, Louisiana, Midwest may enable hydrogen-as-fuel for industrial generators
- Data center operators investing in hydrogen-ready turbines (e.g., Solar Turbines, Wärtsilä, GE Vernova) have optionality for zero-carbon power transition
- Early adopters signal commitment to “net-zero” narratives (marketing advantage)
Caveat: Pure hydrogen fuel for data center power is speculative; economics (hydrogen cost, production availability) remain uncertain through 2030.
Risks & Challenges
⚠️ Late Market Entry
Solar Turbines enters data center BTM market 3–5 years after dominant players (GE Vernova, Wärtsilä, Bloom Energy):
- Customer relationships and supply chain integration already favor incumbents
- Vertiv partnership helps, but Vertiv’s brand in data center is less dominant than GE or Wärtsilä in power generation
- First mover advantage largely captured; Solar Turbines is secondary entrant
⚠️ Product-Market Fit Unproven
Vertiv integration is new; product-market fit unvalidated:
- Will data center customers prefer integrated “Solar + Vertiv” solution vs. buying turbine + cooling separately?
- Will Vertiv’s sales organization effectively sell power generation to data center operators (outside historical expertise)?
- Will Solar Turbines’ oil & gas manufacturing culture adapt to data center fast-paced, technology-driven sales cycles?
Risk: Integration effort consumes resources without generating meaningful market share by 2030.
⚠️ Price Competitiveness Uncertain
At estimated $2.0–2.5M/MW capex:
- Solar Turbines likely sits between GE Vernova ($1.8–2.4M/MW, supply-constrained) and some Wärtsilä offerings ($1.5–2.2M/MW)
- If GE Vernova capacity eases by 2027–2028, Solar Turbines loses pricing power
- If Wärtsilä continues to dominate 10–50 MW segment, Solar Turbines cannot compete on price alone
⚠️ Supply Chain Advantage Erodes
Current advantage: Solar Turbines has no data center backlog; 12–18 month lead time vs. GE Vernova’s 24+ months.
Risk: As data center BTM matures (2027–2030), other turbine manufacturers (Siemens, Mitsubishi) and new entrants expand capacity → lead time advantage disappears, price pressure increases.
2026–2030 Watch List
| Date | Milestone | Probability | Impact |
|---|---|---|---|
| 2026 | First named data center customer announced (Vertiv integrated solution) | Medium | Validates product-market fit |
| 2026–2027 | 5–10 Solar Turbines data center turbines deployed (cumulative) | Medium | Early traction signal |
| 2027 | Vertiv partnership revenue $100M+ (inferred from integrated solutions sales) | Low–Medium | Scale signal |
| 2027–2028 | Hydrogen 100% capability roadmap progress | Medium | Future-proofs product line |
| 2028+ | Market share snapshot: Solar vs. GE, Wärtsilä in 10–39 MW segment | Low–Medium | Determines competitive viability |
Conclusion: Secondary Player with Potential
Solar Turbines (Caterpillar subsidiary) is a secondary entrant to the data center BTM market with some differentiation via CHP, fuel flexibility, and hydrogen roadmap. Vertiv partnership (Nov 2025) is strategically sound but execution risk remains high.
By 2030:
- Optimistic scenario: 500 MW–1 GW of Solar Turbines deployed in data center BTM (1–2% of estimated 50 GW deployed globally); Vertiv partnership becomes viable channel; hydrogen roadmap opens new markets
- Pessimistic scenario: <100 MW deployed; Vertiv partnership underperforms; Solar Turbines remains niche player in declining industrial power generation sector
Key differentiators to watch: CHP integration into hyperscaler cooling architectures, hydrogen-capable turbine performance data, and Vertiv sales execution. If none materialize by 2027, Solar Turbines is likely to lose share to dominant GE Vernova and Wärtsilä.
Key People
Jim Umpleby — CEO, Caterpillar Inc.
- CEO since 2017; prior roles at Caterpillar including Group President; mechanical engineering background.
- LinkedIn: TODO: verify slug.
Solar Turbines Leadership
- Solar Turbines is a wholly-owned subsidiary; specific subsidiary leadership not prominently disclosed in public filings. TODO: identify current Solar Turbines President/GM from public sources.
People — Last Reviewed: 2026-04-25
Related Profiles
- /research/datacenters/behind-meter-power/ge-vernova-aeroderivative/ — GE Vernova (dominant aeroderivative supplier, $2.4B Q1 2026 data center orders)
- /research/datacenters/behind-meter-power/wartsila-btm/ — Wärtsilä (reciprocating engine leader, 2.4+ GW cumulative data center orders)
- /research/datacenters/behind-meter-power/siemens-energy-btm/ — Siemens Energy (heavy-frame turbines, modular 500 MW plants)
- /research/datacenters/power-infrastructure/ — Power infrastructure overview (turbine categories, technology trends)