Modular energy systems and solutions for critical infrastructure.
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Internal Combustion Engine
Internal combustion engine (ICE) gensets remain a cornerstone of reliable on-site power, offering flexibility across fuels, scalable sizes, and proven performance—while emissions controls and hybrid integration (with batteries or hydrogen) continue to expand their role in the clean energy transition.
Key Takeaway:
- Rich Burn → Best for grid resiliency, small to mid-scale CHP and biogas projects
- Lean Burn → Best for continuous duty and grid-connected prime power
- Diesel → Best for mission-critical backup power
- Dual Fuel → Best for remote operations and oil & gas fields
Gas Turbine
Gas turbines generate power by compressing air, mixing it with fuel (typically natural gas or liquid fuels), and igniting the mixture to spin turbine blades connected to a generator. They are widely used for utility, industrial, and large commercial power due to their ability to deliver high output, fast ramp rates, and CHP potential.
Key Takeaway:
Gas turbine gensets are a good choice for customers needing large-scale, continuous, or CHP power where high efficiency, fuel flexibility, and long-term reliability matter most.
Fuel Cell
Battery Storage (BESS)
Fuel cells are electrochemical devices that convert fuel directly into electricity and heat, without combustion. They offer high efficiency, low emissions, quiet operation, and modular scalability, making them increasingly important in backup, continuous, and distributed power applications.
Key Takeaway:
- PEM → best for backup/modular systems and data centers needing rapid response.
- SOFC → best for continuous duty + CHP, especially where NG or biogas is available.
- MCFC → useful for MW-scale CHP/utility with potential for integrated CO₂ capture.
- PAFC → niche, legacy, mid-size CHP; being displaced by SOFC and PEM.
Battery Storage (BESS)
Battery Storage (BESS)
Battery storage systems provide fast, flexible, and zero-emission power by storing electricity for use when needed, making them ideal for backup, peak shaving, renewable integration, and grid resiliency—with lithium-ion leading today’s market, flow and sodium chemistries emerging, and best performance achieved when paired with other prime movers for long-duration needs.
Key Takeaway:
- Li-ion dominates today (short to mid duration, cost competitive).
- Flow batteries are rising for long-duration storage.
- Sodium and emerging chemistries could reduce costs and supply risks.
- Lead-acid remains in use for small backup but is being displaced.
Photovoltaic (PV) Solar
Photovoltaic (PV) solar converts sunlight directly into electricity using semiconductor cells, offering a clean, scalable, and low-cost renewable power solution that ranges from small rooftop systems to large utility-scale solar farms—delivering zero-emission energy but requiring storage or hybrid integration for continuous supply.
Key Takeaway:
PV solar is today’s most cost-effective and scalable renewable technology, offering zero-emission power across residential, commercial, and utility projects—though it depends on storage or hybrid systems to provide continuous, dispatchable energy.
Concentrated solar
Concentrated Solar Power (CSP) uses mirrors or lenses to focus sunlight onto a receiver, producing high-temperature heat that drives a turbine or engine to generate electricity, often paired with thermal storage to deliver renewable, dispatchable power for utility and industrial applications.
Key Takeaway:
CSP provides renewable, dispatchable, and zero-emission power with the advantage of integrated thermal storage, making it most competitive at utility scale or industrial sites with high heat and power demand.
Internal Combustion Engine (ICE) Gensets
ICE gensets deliver proven, reliable, and cost-effective on-site power.
Benefits
- Proven & Reliable – Decades of field use with robust OEM and service networks worldwide.
- Low CAPEX – Lowest upfront cost of any on-site generation technology ($200–$900/kW for most units).
- Fuel Flexibility – Can operate on diesel, natural gas, propane, biogas, RNG, and dual-fuel blends.
- Scalability – Available from 20 kW to 20+ MW, covering small backup to utility-scale prime power.
- Fast Response – Diesel and rich burn units can start in <10 seconds, ensuring grid resiliency and critical load support.
- High Power Density – Compact footprint compared to many alternative technologies.
- Established Supply Chain – Readily available equipment, parts, and skilled technicians.
- CHP Capability – Gas gensets can achieve 70–85% total efficiency with heat recovery.
Challenges
- Emissions – Higher CO₂ and NOx than fuel cells and renewables; compliance with Tier 4 or local air permits can add cost.
- Fuel Costs & Volatility – Diesel OPEX is high ($0.18–$0.24/kWh) and tied to oil prices; natural gas more stable but still variable.
- Noise & Vibration – Requires acoustic enclosures or siting considerations for sensitive locations.
- Maintenance Intensity – Regular oil changes, overhauls, and catalyst replacements (O&M $0.015–$0.04/kWh).
- Carbon Transition Pressure – Customers face increasing ESG scrutiny and incentives to move toward lower-carbon solutions (fuel cells, renewables, hybrids).
Fuel Cells
Fuel cells provide a clean, efficient, and reliable alternative to combustion-based power.
Benefits of Fuel Cells
- Ultra-low emissions: Only water and heat as byproducts when using hydrogen.
- High reliability: No moving parts in the core stack, ideal for mission-critical sites.
- Scalability: From kilowatts to multi-megawatt systems.
- Fuel flexibility: Can use hydrogen, methanol, natural gas, biogas, or ammonia depending on type.
Challenges
- Fuel supply & infrastructure: Hydrogen logistics, reforming needs, and storage add cost/complexity.
- Capital cost: Higher than gensets today, though IRA tax credits and scale are improving economics.
- Durability: Stack life and replacement intervals vary by technology.
Gas Turbines
Gas turbine gensets are a reliable choice for large-scale continuous power and CHP.
Benefits
- High Power Output – Efficiently scales from 5 MW to 500+ MW, covering utility and industrial applications.
- Fuel Flexibility – Runs on natural gas, diesel, kerosene, propane, syngas, and hydrogen blends.
- Fast Ramp Capability – Simple-cycle turbines can start in minutes, supporting grid stability and peak shaving.
- High Efficiency with CHP/Combined Cycle – Up to 62% electrical efficiency, 80%+ total efficiency with heat recovery.
- Proven Reliability – Globally deployed in utilities, refineries, and industrial facilities.
- Lower Emissions than Diesel – Competitive CO₂/kWh; NOx emissions can be reduced with low-NOx burners/SCR.
- Compact Power Density – Delivers very high MW output relative to footprint.
Challenges
- High CAPEX – $600–$1,200/kW (simple cycle), $1,200–$1,800/kW (combined cycle), higher than reciprocating gensets.
- Lower Simple-Cycle Efficiency – 28–38% efficiency without CHP/combined cycle.
- Maintenance Complexity – Requires specialized expertise, high-cost overhauls, longer downtime vs ICE.
- Fuel Quality Sensitivity – Performance impacted by contaminants and Wobbe index variability.
- NOx Control Requirements – Needs SCR or low-NOx burners to meet modern air permits.
- Not Suited for Small Scale – Economical only above ~5 MW output.
- Efficiency Loss at Part Load – Poorer performance when operating below design load.
- Temperature Impact – Hot ambient conditions reduce power output and efficiency, often requiring inlet cooling or derating in warm climates.
Battery Storage
Battery storage delivers fast, flexible, zero-emission power for backup, cost savings, & renewables
Benefits
- Fast Response: Instant power for ride-through, frequency regulation, and backup.
- Zero Local Emissions: Silent, clean operation at the point of use.
- High Efficiency: Round-trip efficiency of 85–95% (Li-ion).
- Flexible Applications: Backup, peak shaving, time-of-use arbitrage, renewable smoothing, and microgrids.
- Scalable & Modular: From kW-scale to hundreds of MW, with duration typically 1–8 hours.
- Grid Services: Provides frequency response, demand charge reduction, and ancillary market participation.
- Decreasing Costs: Rapid cost declines over the past decade with continued improvement expected.
Challenges
- Limited Duration: Most Li-ion systems provide only 1–4 hours of storage (not suited for long-duration baseload).
- Degradation & Replacement: Performance declines with cycles; augmentation/replacement needed every 7–15 years.
- Upfront Cost: $400–$800/kWh installed is still high for long-duration storage.
- Thermal Management & Safety: Requires fire protection and monitoring systems.
- Supply Chain Risks: Dependent on critical minerals (lithium, cobalt, nickel).
- Environmental Impact: Mining, recycling, and disposal concerns for certain chemistries.
- Climate Sensitivity: Performance can be impacted by extreme temperatures without proper thermal control.
Photovoltaic (PV) Solar
PV solar is today’s most cost-effective and scalable clean energy solution
Benefits
- Zero Emissions: Clean electricity generation with no emissions during operation.
- Lowest-Cost Renewable: Utility-scale PV is among the cheapest sources of new power ($800–$1,200/kW installed).
- Scalable: Works at any size—from rooftop kW systems to 500+ MW solar farms.
- Low OPEX: Minimal maintenance, with long module lifespans (20–30 years).
- Modular & Flexible: Easy to deploy, expand, and pair with storage or hybrid systems.
- Abundant Resource: Harnesses widely available solar energy.
Challenges
- Intermittency: Only generates during daylight; requires storage or backup for continuous supply.
- Land Use: Large utility projects require significant acreage, especially for high-capacity installations.
- Grid Integration: High penetration can strain grids without storage or smart controls.
- Degradation: Panels slowly lose efficiency (~0.3–0.8%/year).
- Recycling & End-of-Life: Growing need for cost-effective recycling solutions for modules and inverters.
- Climate Sensitivity: Performance varies with irradiance, shading, soiling, and high temperatures (derating).
Concentrated Solar Power (CSP)
CSP focuses sunlight into heat to drive turbines, delivering renewable, dispatchable power with TES
Benefits
- Dispatchable Renewable Power: Integrated thermal storage (molten salt, thermal oils) enables electricity generation even after sunset.
- Zero Emissions: Clean generation during operation with no fuel use.
- High-Temperature Output: Produces steam and process heat suitable for industrial applications as well as electricity.
- Hybrid Potential: Can be combined with gas turbines or boilers for continuous operation.
- Scalability: Best suited for utility-scale plants (10–200+ MW) with multi-hour storage.
- Grid Stability: Provides synchronous generation with turbine-based output, supporting grid reliability compared to PV alone.
Challenges
- High CAPEX: $4,000–$8,000/kW installed, significantly higher than PV solar.
- Land & Location Dependent: Requires large, flat areas with high direct normal irradiance (DNI)—best in deserts or semi-arid climates.
- Water Use: Cooling and cleaning can be water-intensive unless dry cooling is used.
- Complexity: Moving parts (heliostats, receivers, heat transfer systems) increase maintenance compared to PV.
- Scale-Dependent Economics: Most cost-effective only at utility scale, not small projects.
- Weather Sensitivity: Performance drops sharply with cloud cover, haze, or dust storms.