Revolutionizing Energy Storage
Discover AC2DC Storage LLC, the leader in solid-state energy storage innovation. Our scalable solutions range from 12kW to megawatts, offering safe, non-toxic, and non-flammable energy storage that's 100% recyclable and upcyclable. With a lifetime warranty and a design life of 25 years, our batteries are built for the future, delivering unmatched performance and reducing costs today.
Why we stand out
Our Solid-State Energy Storage Technology (ELDES) has been successfully implemented in both everyday and high-stakes applications overseas for over 8 years, proving its reliability and durability in demanding environments.
Click Here for an An insightful video interview featuring EMTEL Energy USA CEO Phillip Martin, conducted by renowned product testing authority Pradyumna (Prady) Gupta.
Unmatched Safety and Reliability
Our solid-state energy storage solutions are designed with safety at the forefront. They are non-toxic and non-flammable, significantly reducing insurance costs and eliminating the need for cooling systems. Our commitment to safety ensures peace of mind for businesses and individuals alike.
Sustainable and Economical
Our Solid-State Storage Solutions are not only 100% recyclable but also upcyclable, making them a sustainable energy solution. With a tested design life of up to 50 years, our storage systems offer an impressive 500,000 cycles at 1C, ensuring long-term savings and a reduced environmental footprint.
Superior Performance in All Conditions
Our solid-State Storage System Solutions provide exceptional temperature and output performance. Whether you're operating in extreme heat or cold, our energy storage system solutions deliver consistent energy, ensuring you have reliable power when you need it most. Experience the future of energy storage today with our advanced solid-state technology.

Energy Storage Modules
This product, is the foundation of our energy storage product line. It is available in various configurations and capacities based on application. Leveraging supercapacitor-based technology, we’ve removed the limitations of supercaps to deliver the most advanced electrostatic long-duration energy storage (ELDES) the market has seen.
All modules contain patented encapsulated, electrostatic graphene storage with a solid-state form factor. They allow bi-directional energy flow so they can charge and release power simultaneously…without any leakage. The lack of chemical process at cell level means these modules are highly efficient, have no thermal runaway and no degradation.
EMWALL - MADE IN THE USA!
Safe, Scalable, and Smart Residential and C&I Energy Storage
Emtel Energy USA’s first Made in the USA product, EMWALL is a compact, wall-mounted energy storage system built for safety, efficiency, and performance. Unlike known backup-only lithium systems, the EMWALL is engineered to enable energy independence by going off-grid.
Powered by patented solid-state technology, EMWALL delivers clean, reliable energy with zero risk of thermal runaway. Ideal for homes, businesses, or microgrids—EMWALL keeps your power on, no matter what.
Versatile Power Inputs: EMWALL seamlessly integrates with the grid, solar, or genset power, operating in standalone, grid-tied, or off-grid hybrid modes. It automatically transitions between modes as needed, providing redundancy and peace of mind.
Superior Efficiency: With industry-leading AC and DC round-trip efficiency and near-zero degradation, EMWALL outperforms lithium systems on all metrics- including depth of discharge, duration, and longevity.
Unmatched Safety: Featuring the safest energy storage technology available, EMWALL eliminates the safety concerns of lithium and operates at full efficiency in extreme temperatures (-22°F to 140°F) without the need for heating or cooling.
EMWALL: Enabling the next generation of small-scale long-duration energy storage

Why Choose EMWALL?
- Non-lithium, ultra-safe storage – No thermal runaway, safe for indoor use yet made to withstand the elements.
- Grid independence – More than just backup power, EMWALL can work with alternative energy sources to support full off-grid living.
- When grid-connected, time of use optimization (TOU) allows owners to benefit from peak shaving, peak reduction incentives and have readily available backup power.
- High cycling capability – Up to four cycles per day for maximum energy utilization.
- Industry-leading performance – 100% depth of discharge, ultra-fast charge/discharge.
- Add a renewable energy source to go completely off grid. Grid and genset can build in additional redundancy for a zero-downtime solution that will serve owners for life.
EMWALL is built for reliability, designed for flexibility, and manufactured in the USA to power the next generation of energy storage solutions.
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A Smarter, Safer, UPS Alternative and Energy Storage Solution
Backup power for data centers, government facilities, and other critical infrastructure by combining UPS and energy storage in a single, compact solution. Unlike traditional VRLA and lithium systems, this solid-state graphene technology eliminates the need for additional cooling and poses no risk of thermal runaway or fire, ensuring the highest level of safety and reliability.
With its ability to respond in nanoseconds and dual-purpose functionality, this offers unparalleled redundancy and resilience. By reducing a system’s footprint by up to 85% and lowering utility costs by an average of 4%, this systwem delivers a smarter, more sustainable way to power critical operations.

The Complete System
To achieve true energy resilience and sustainability, a new generation of long-duration energy storage is essential—one that can handle high demand safely to support a decentralized power grid that meets the demands of today and tomorrow.
- Release power over 12+ hours or all at once
- Complete turnkey design with Energy Storage, Power Conditioning System (PCS), Fire Suppression, Energy Management, Monitoring and Distribution System.
- Maximum safety with no thermal runaway or heat signature
- Outstanding performance and long lifespan with over 500,000 cycles at 1C. Can be configured to charge up to 4C
- Integrated distribution for operation status control, DC grid-connection control, protection and data exchange.
Supports grid-tied, partial-grid or microgrid configurations
20′ Container: Currently 2MWh | 40′ Container: Currently 4.2MWh
* Increased density coming soon: 5MWh | 10MWh.
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Our Company
AC2DC Storage LLC is at the forefront of innovation in the energy storage industry, specializing in scalable solid-state energy storage solutions. Our products embody safety and sustainability, being non-toxic and non-flammable, which also translates to lower insurance costs. With no need for cooling systems, our energy storage system solutions are 100% recyclable and upcyclable. We pride ourselves on delivering superior temperature and output performance, making us a leader in the solid-state energy storage system solutions market today. At AC2DC Storage, we're not just envisioning the future of energy storage; we're actively creating it.
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