ElectriStor™ Core Innovation

The unique benefits offered by our ElectriStor™ product platform are a result of quantum improvements in cost and performance over earlier liquid based energy storage systems. These improvements are based on proprietary ElectriStor™ technology components discussed on the Technology Platform page. Application benefits are also detailed on the Product page and are based on a number of proprietary innovations unique to the WattJoule ElectriStor™ platform.  WattJoule has a three-generation ElectriStor™ product pipeline in various stages of development/maturity.

The basis of our improvements is a core set of innovations based in turn on recent advances in electrochemical energy storage technology (redox flow batteries), electrochemical power generation technology (fuel cells) and advanced nanomaterials engineering. Our innovations are based, in part, on a world-class energy storage R&D effort. From this effort, we have exclusively licensed technology that we are commercializing as the ElectriStor™ platform.

ElectriStor™ Foundational R&D Effort

ElectriStor Foundational R&D Effort

The basis of our improvements is a core set of innovations based in turn on recent advances in electrochemical energy storage technology (redox flow batteries), electrochemical power generation technology (fuel cells) and advanced nanomaterials engineering. Based on this collective set of innovations, introduction of our Generation 1 product to the market provides WattJoule with a strong and defensible competitive advantage in both cost and performance over many existing electrical energy storage platforms for the stationary market. Our technical team has pioneered these innovations by combining advanced design approaches, new materials and cumulative experience in these fields.

Below is a summary of the key ElectriStor™ improvement factors with respect to current vanadium redox battery system metrics. The factors are indicated for each of our three platform generations.

Quantum Improvement Factors

Key Metric SOA¹ Gen 1 Gen 2 Gen 3 Core Benefit
Converter Stack Power Density 1X 6X 7X 8X Lower material cost
Electrolyte Energy Density 1X 2X 3X 4-5X Less liquid required
Electrolyte Temperature Range 1X 3X 3.2X 3.2X No active cooling needed
Roundtrip Efficiency 1X 1.1X 1.2X 1.25X Lower life cycle cost
Vanadium Cost Reduction 1X 1.3X 2.2X 3-4X Lower vanadium cost
DC System Capital Cost ($/kWh) 500 170 130 100 Significantly lower CapEx

¹ State-of-the-Art Redox Flow Battery

Gen 1 Metrics Already Demonstrated in ElectriStor™ Hardware