Any Fuel, Any Size, Any Load, Anywhere
The Mainspring Linear Generator delivers unmatched flexibility for the grid transition, including the ability to switch between fuels like hydrogen, ammonia, and biogas with software, and quickly track and firm renewables with its full dispatchability. Whether deployed as a single unit or as a grid-scale array, the technology is easy to permit and interconnect in any jurisdiction, allowing for broad impact across a wide range of use cases on both sides of the meter.
“Kroger’s deployment of Mainspring at our stores advances our environmental, social and governance efforts while reducing operating costs, helping us better serve our associates, customers, and communities”
“This is a low-emission, resilient, and affordable alternative that holds a lot of promise for our future.”
Markets & Applications
The unmatched combination of low cost and low emissions combined with high efficiency, fuel flexibility, and full dispatchability make the Mainspring Linear Generator the ideal choice for customers looking for clean and reliable power for the zero carbon future.
Mainspring products and inverters are UL listed, streamlining the permitting and interconnection processes while firming intermittent renewables.
Commercial & Industrial
Mainspring Linear Generators are designed to flexibly operate to meet your cost savings, sustainability, and resiliency needs. Full dispatchability and dynamic fuel switching enable you to meet your goals today and in the future.
- 24/7 load-following, primary power operation when needed
- Reliable power even when the grid is down
- Economic dispatch based on tariff or real-time pricing
- Peak-load shaving for demand charge reduction
- Onsite solar and energy storage firming
Grid Infrastructure
For utilities, municipalities, and power project developers, Mainspring’s Linear Generators are movable and offer utility-scale performance for any project size. The low emissions, modularity, and fuel flexibility of Mainspring’s products reduces the permitting and stranded asset risks associated with large generation and transmission projects.
- Meet capacity needs with a distributed network of systems that alleviate congestion constraints, firm renewables, and add local resiliency
- Avoid or defer T&D upgrades by placing high-performance, fuel-flexible capacity with precision
- Charge electric vehicle (EV) fleets while avoiding expensive and multi-year system upgrades
Microgrids
The Mainspring Linear Generator is the ideal backbone for any microgrid. With any fuel available, our products can seamlessly integrate with solar, energy storage, and microgrid controllers to provide load balancing while parallel to or islanded from the grid.
- Municipal infrastructure
- Hospitals and healthcare facilities
- Shipping ports
- Data centers
- University campuses
- Military bases
- Residential communities
Customers
Mainspring is proud to work with global leaders. A selection of our customers includes:
Purchase Options
We currently offer customers two purchase options to realize the benefits of Mainspring’s Linear Generators — direct capital purchase or a financed solution such as an Energy Services Agreement / Power Purchase Agreement. Both options come with a Mainspring-supported Maintenance Agreement.
Direct Purchase
Customers looking to maximize cost savings and return on investment can directly purchase and own a Linear Generator. Mainspring works with customers to facilitate the installation, providing installation support or delivering full turn-key projects.
Energy Services Agreement
Mainspring has partnered with NextEra Energy Resources to provide customers a financed option for turn-key linear generator projects. With this option, customers can realize immediate benefits of Mainspring systems with no upfront costs.
Product Specifications
Utility-scale Performance for Any Project Size
Inverter-based Technology
Easy, Modular Installation
15 MW per Acre Scalability
Each base package contains two linear generator cores, operating in tandem
Outputs
480 V, 3 Phase, 60/50 Hz
Large-Scale Projects:
1.5-3 MW, net AC
External Inverters
Base Package:
230 kW, net AC
Internal InvertersInputs
Natural Gas or Biogas
w/up to 30% H2 Blend1
8-25 psig Inlet Pressure
No WaterPerformance
45% Efficiency, Net AC2
Load Tracking
Zero to Full PowerEmissions
NOx < 2.5 ppmvd3
Sound < 70 dBA @ 6 ftPhysical
Large-Scale Projects:
>15 MW/acre
Base Package:
20.5’ x 8.5’ x 9.5’ (L,W,H)Other
UL 2200 Package
UL 1741 SA Inverters
Remote Monitoring
1. 100% hydrogen and 100% ammonia capable. Contact us to learn more.
2. Measured according to ASME PTC 50 at 15 C and 1 atm
3. Products comply with emissions limits in South Coast AQMD
Resources
E3 White Paper
The Role of Firming Generation in Microgrids
A California Case Study, Analyzing Four Microgrid Technology Configurations
DownloadWebinar: Smart Energy Decisions
Kroger Discusses its Mainspring Linear Generator Deployments
Cost, Resilience and Sustainability Benefits of the Latest DER Technology. A free one-hour webinar by Smart Energy Decisions
View WebinarWebinar: GreenBiz
Renewable and Resilient Energy in Commercial Buildings
Lineage Logistics discusses its deployment of 330 MW of rooftop solar and two Mainspring Linear Generators at a cold storage facility in Colton, CA.
View Webinar
Customer Inquiries
If you think that a Mainspring Linear Generator might be a good fit for your organization, we would love to hear from you. Please send us some basic information about you and an indicative facility where a Linear Generator would run.