Early Stage

Mechanical battery—the sustainable energy revolution

Mechanical battery—the sustainable energy revolution


Raised to Date: Raised: $1,235,000

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RegCF    Open SEC Filing

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Year Founded



Energy, Power, & Natural Resources

Tech Sector


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New York, New York

Business Type

High Growth

Qnetic, with a valuation of $15 million, is raising funds on Wefunder. The company has developed a power-to-power flywheel energy storage system that is sustainable, long-life, and low-cost. The energy storage system takes in electricity, converts it into the kinetic energy of a spinning rotor, and stores it as momentum with very low losses. Qnetic’s system is the solution to solar and wind power intermittency and aims to transition civilization to sustainable energy. Michael Pratt and Loic Bastard founded Qnetic in September 2022. The current crowdfunding campaign has a minimum target of $250,000 and a maximum target of $1.2 million. The campaign proceeds will be used for filing initial patents, designing and building its lab-scale prototype, testing, market research, R&D, and operational expenses.

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Financials as of: 12/25/2022
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The most common source of energy storage is lithium-ion batteries. They are the cheapest solution available for renewable energy farms, and they store electricity instantaneously. But they have some major drawbacks.

Lithium mining isn’t green, which sort of defeats the purpose of using lithium batteries for renewable energy. Every ton of lithium mined releases as much as 15 tons of carbon dioxide into the atmosphere. And lithium batteries can’t provide the kind of storage that renewables really need. They can hold only about four to six hours of energy, which is nowhere near enough to power the grid. And lithium-ion batteries designed to last longer would be too expensive to be practical. 

Lithium batteries also have a short lifespan. After 2,000 charge cycles — usually around five years — their storage capacity falls below 80%, so most renewable energy farms need to replace them regularly. This increases their cost over time and multiplies their environmental impact. And lithium batteries are very hard to recycle and release toxic chemicals when they sit in landfills. From start to finish, lithium batteries are far from an ideal solution.

There are existing solutions that actually have a lower environmental impact and a longer lifespan. But none are competitive in terms of price. This is the problem that Qnetic is trying to solve — providing affordable and sustainable energy storage that can power cities from evening peak hours to the next sunrise.

Founder Profile

Qnetic Co-founder Michael Pratt on Rotor-Based Renewable Energy Storage

Demand for “clean” and “green” is blowing up across industries. And at the center of this eco-conscious movement is renewable energy, a space where innovation flows like water out of a dam. But renewable energy storage — the key to having solar energy available on cloudy days — still needs work. 

Qnetic’s answer is a storage system that converts electricity to kinetic energy in the form of a spinning rotor. The rotor keeps turning in a vacuum until the energy is needed again, when the process is reversed to release electricity. We reached out to founder and CEO Michael Pratt to learn how to improve the future and why Qnetic located its prototype in Germany.

Note: This interview was conducted over phone and email. It has been lightly edited for clarity and length.

Read Founder Interview

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Qnetic on Wefunder 2022
Platform: Wefunder
Security Type: SAFE
Valuation: $15,000,000

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