Perspectives
18 December 2025
Mainspring Energy
Bring your own power.
Don’t let power constraints limit your growth: add local power where and when you need it.
Get an unmatched combination of benefits.
01
Deploy quickly
Deploy reliable, scalable onsite power in months, not years, with modular units that permit and install quickly.
02
Add flexibility
Deliver prime power, solar firming, diesel reduction or elimination, grid services, and multi-fuel operation with a single, fully dispatchable asset.
03
Control costs
Lower capex, lower maintenance costs, and higher efficiency combine to deliver a lower levelized cost of electricity (LCOE) than alternative technologies.
04
Increase resilience
Deploy fuel redundant power that can operate independently or in coordination with the grid.
05
Reduce emissions
Generate low-emissions power today and transition seamlessly to zero-carbon fuels over time.
Power built for performance, flexibility, and growth.
The flexibility of Mainspring’s linear generators to tackle the constraints of fuel availability, air permitting, scalability, and reliable power supply are critical for this moment to power the economy of the future.
Joe Kava
Data Center Industry Leader, Former Google
Power solutions built for every industry.
Data centers
Deploy modular, fast-to-permit, operationally flexible power to meet rising compute demand.
Enterprise
Bring reliable, low-emissions primary power onsite to control costs and ensure uptime.
Industrial
Generate dependable, low-emissions power using available fuels like biogas, field gas, or natural gas.
Mainspring simplifies every
step to get local power.
01
Site Plan
We assess your site and constraints to tailor a system that fits your goals.
02
Financing
Select flexible ownership and service options to align with your needs.
03
Permitting
Streamlined approvals with low-noise and low-emissions design.
04
Installation
Factory-built, pre-assembled and tested power units for fast, low-risk deployment.
05
Maintenance
Get turnkey maintenance from Mainspring or explore our flexible service offerings.
Two ways to get the power you need — and benefit from a 30% tax incentive.
01
Direct purchase
Buy outright to take advantage of available incentives, long-term economic value, and maintain ownership of your asset.
02
Financed solution
Finance with flexible structures that reduce upfront capital expenditure and deliver predictable, manageable expenses.
Tax credit
Mainspring Linear Generators qualify for a Federal Investment Tax Credit (ITC) of 30% for projects through 2032.
Service options
Get turnkey maintenance from Mainspring or explore our flexible service offerings.
Learn how energy is changing.
In The News
21 August 2025
National Grid Ventures
In The News
13 August 2025
Garrett Hering
A linear generator converts fuel directly into electricity through a low-temperature, flameless reaction. Without combustion or complex mechanical parts, it provides high efficiency, low emissions, and quiet operation in a compact, modular system built for local generation.
A linear generator delivers fast, flexible, low-emission power with full dispatchability and seamless fuel switching. Other technologies require tradeoffs across one or more of these attributes. Fuel cells share the low-emissions profile but can’t seamlessly switch fuels or load follow, limiting their flexibility. Engines and turbines offer dispatchability but rely on combustion, which drives higher local air pollution and increases complexity.
A linear generator is fully fuel flexible, operating on natural gas, biogas, propane, field gas, associated gas, or hydrogen. It can seamlessly switch between gaseous fuels, allowing customers to maintain power during a fuel interruption and return to their primary fuel once service is restored. Unlike technologies that require major retrofits or permanent conversions, a linear generator provides true fuel redundancy without locking customers into a single fuel source.
Mainspring’s linear generators provide fast-ramping, dispatchable power that can operate independently or in parallel with the grid. Each system can serve as firm, flexible, local capacity for utilities or as onsite generation for commercial and industrial users. Linear generators can follow load, form microgrids, and balance renewable resources, all within a modular design that scales from single sites to multi-megawatt deployments.
Linear generators solve capacity constraints today while providing flexibility for the future. Their non-combustion design produces near-zero NOx and no particulate matter, and their high efficiency and fuel flexibility enable customers and utilities to cut emissions now and transition smoothly to zero-carbon fuels like hydrogen and biogas. The result is clean, firm power that supports growth while accelerating grid decarbonization.