Corporate FP&A Analyst
About the job
- A bachelor's degree in Finance, Economics, or a related area is required.
- At least 5 years of relevant experience in corporate finance or FP&A is required; experience in a company manufacturing a complex product or in the energy industry is preferred.
- Proven experience in budgeting, forecasting, and financial planning is required.
- Strong analytical skills, including proficiency in financial modeling and data analysis, are required.
- The ability to communicate and present complex financial information to non-financial stakeholders is required.
- A deep understanding of financial accounting principles and business operations is required.
- Advanced proficiency in Microsoft Excel and financial software applications is required.
- Partner with department leaders to build the annual plan by establishing targets and gathering and documenting financial plan inputs.
- Prepare monthly, quarterly, and annual financial reports for department leaders and highlight key performance indicators.
- Conduct variance analysis to explain deviations from budget and forecast, identifying potential issues and areas for improvement.
- Build and maintain financial models that support business decisions, scenario analysis, and management reporting.
- Conduct comparative analysis of Mainspring Energy with peer public companies.
- Support the Controller’s organization as needed, including close, variance explanations, and data analysis.
- Participate in long-term financial planning, representing R&D and G&A department needs.
- Continuously improve FP&A processes, systems, and analytical capabilities to support company growth.
- Support special projects, business cases, and ad hoc analyses as needed.
- An MBA, CFA, or CPA is a plus.
About the company
Onsite linear generators convert straight-line motion into electricity using a flameless, low-temperature air–fuel reaction that drives magnets through copper coils. With only two moving parts and an oil-free air-bearing, maintenance is reduced, and the system runs on multiple fuels (natural gas, biogas, hydrogen, ammonia, or propane) with seamless switching. Modules scale from about 250 kW to over 100 MW and produce near-zero NOx without after-treatment. The energy-as-a-service model lets customers install with no upfront cost and pay for the energy used, serving commercial and industrial customers, data centers, utilities, and microgrids, with financing and deployment partners like NextEra Energy Resources and Schneider Electric; the company has attracted major investors and is expanding manufacturing to support growth.
Company Size
501-1,000
Company Stage
Series F
Total Funding
$726M
Headquarters
Menlo Park, California
Founded
2010
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Simplify's Take
What believers are saying
- UMPA selected Mainspring for 48 MW in February 2026, validating utility demand.
- CalBio expanded to 5.3 MW across five California sites in February 2026.
- Chattanooga and Verdagy projects in 2025-2026 prove wastewater methane and hydrogen use cases.
What critics are saying
- Mainspring still depends on the 2027 Pittsburgh plant; permitting or construction slips delay volume.
- Data-center and utility wins stay project-based, so cancellations can crush forecasted revenue.
- A hydrogen commercialization miss would undercut its fuel-flexibility thesis against diesel and turbines.
What makes Mainspring Energy unique
- Tom Linebarger joined June 2026, giving Mainspring Cummins-scale utility and data-center credibility.
- Its linear generators run biogas, hydrogen, ammonia, propane, and natural gas without downtime.
- Pennsylvania factory plans target 1,000 generators yearly, supporting fast domestic supply scaling.
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Benefits
Health Insurance
Dental Insurance
Vision Insurance
Unlimited Paid Time Off
Flexible Work Hours
Remote Work Options
Paid Vacation
401(k) Retirement Plan
Conference Attendance Budget
Professional Development Budget
Wellness Program
Mental Health Support
Gym Membership
Phone/Internet Stipend
Home Office Stipend
Growth & Insights and Company News
6 month growth
↑ 0%1 year growth
↑ 0%2 year growth
↑ 2%Mainspring Energy has appointed Tom Linebarger, former Cummins chairman and CEO, as chief executive, whilst founder Shannon Miller transitions to president. The move positions the company for expansion into AI data centre and utility power infrastructure markets. Linebarger spent 30 years at Cummins, navigating growth and entry into new markets including battery electric powertrains and data centre power. He joined Mainspring's board 14 months ago and was recruited by Miller after demonstrating the impact he could deliver. Founded in 2010, Mainspring manufactures fuel-flexible, low-emissions linear generators. The company began commercial shipments in 2020 and now has hundreds of megawatts in advanced development and field operations, serving Fortune 500 companies, data centres and utilities. Partners include AEP, NextEra Energy Resources and Schneider Electric.
Chattanooga's Moccasin Bend Environmental Campus is partnering with Mainspring Energy to convert wastewater methane into electricity, aiming to cut roughly one-third of its $300,000 monthly energy costs. The project will install six linear generators this year, producing 1.5 megawatts initially, with plans to double capacity to three megawatts following campus upgrades. The system will eliminate routine methane flaring whilst strengthening grid reliability by generating power on-site. Once fully operational, it will rank amongst the largest municipal biogas-to-power projects in the Southeast. Mainspring's low-emission generators can run on biogas, natural gas, hydrogen or ammonia, allowing fuel source flexibility. The project reflects growing municipal focus on infrastructure resilience whilst reducing emissions and stabilising long-term energy costs for ratepayers.
Utah Municipal Power Agency has selected Mainspring Energy to supply 48 MW of dispatchable local generation capacity using linear generators. The greenfield project in central Utah is scheduled to begin operations in 2027. UMPA chose Mainspring's technology to address rising electricity demand whilst meeting sustainability and cost objectives. The linear generators offer emissions below 1.5 ppm NOx, rapid factory manufacture and installation, and qualify for a 30% investment tax credit. The modular design ensures high availability during maintenance events. Mainspring began commercial shipments of its linear generators in 2020 and has hundreds of megawatts in development. The company partners with major energy firms including AEP, NextEra Energy Resources and Schneider Electric.
Friday, 30 May 2025Verdagy’s Moss landing plant has been in operation for four years with more than 20,000 hours of operation with commercial cells and over 200 tons of hydrogen produced. The fully automated, 24/7 plant provides Mainspring constantly available, low-cost hydrogen as a fuel for power generation.The collaboration establishes a ready hydrogen fuel source for Mainspring’s fuel-flexible linear generators and provides Verdagy with onsite offtake for its hydrogen and electricity to support its electrolysers operation. The two companies expect to begin operations by summer 2025.“Verdagy and Mainspring Energy are demonstrating how we can improve energy resiliency for the electrical grid, datacentres and other applications” said Marty Neese, CEO of Verdagy. “This collaboration with Mainspring Energy is a compelling model for clean, flexible, on-site power solutions.”Building on its expertise in producing clean hydrogen at scale, Verdagy is now reducing operational costs by converting hydrogen into power and cycling it back into the facility.“This agreement presents an excellent opportunity for Mainspring to showcase our linear generator’s capabilities operating on hydrogen and for Verdagy to demonstrate its high resiliency industrial grade production operation” added Shannon Miller, Mainspring CEO and Founder. “We’re pleased to partner with Verdagy to highlight the significant potential of hydrogen in power generation.”By powering Mainspring’s Linear Generators with hydrogen produced on-site, the installation demonstrates how low-carbon energy can be deployed at the point of use – critical for enhancing resiliency in grid constrained and mission-critical environments. This co-located model for hydrogen consumption to generate power is crucial as grid constraints grow.For additional information:VerdagyMainspring Energy
EAST GRANBY, Conn., May 7, 2025 /PRNewswire/ -- Kinsley Energy Systems, a leader in onsite power solutions with a 60-year legacy in the energy industry, announces a new partnership with Mainspring Energy to deliver linear generators to commercial and industrial businesses and other high-demand facilities across the Northeast, mid-Atlantic and beyond. This collaboration combines Kinsley's unmatched onsite energy expertise and field service capabilities with Mainspring's innovative linear generator technology