What makes Solid Power’s sulfide electrolyte different from other solid-state approaches?

Solid Power emphasizes sulfide electrolytes for their combination of high ionic conductivity and compatibility with conventional roll-to-roll manufacturing equipment, unlike oxide or polymer alternatives that may require different processing.

How do Solid Power’s silicon EV cells compare to standard lithium-ion on energy and cost?

The company targets 390 Wh/kg and 930 Wh/L with expected reductions in pack volume, mass, and cost versus lithium-ion, while maintaining 1,000+ cycles in initial commercialization designs.

Which OEMs are already working with Solid Power on all-solid-state batteries?

Public partnerships include joint development programs with BMW and Ford plus a 2021 manufacturing agreement with SK Innovation to produce automotive-scale cells using Solid Power’s electrolyte and designs.

Is Solid Power currently shipping production cells or still in development?

The scraped investor site presents performance targets for initial commercialization designs and does not list production shipments, indicating the technology remains pre-commercial.

What cell formats does Solid Power offer beyond the silicon EV cell?

In addition to the 390 Wh/kg silicon cell, Solid Power lists a 440 Wh/kg lithium-metal cell and a 560 Wh/kg conversion-reaction cell, all using the same sulfide electrolyte platform.

Are Solid Power batteries designed to work with existing EV battery factories?

Yes, the company states its sulfide electrolytes are optimized for stability, conductivity, and compatibility with industry-standard lithium-ion roll-to-roll processing equipment.

8 Best Solid Power Alternatives & Competitors (2026)

Solid Power logo Alternatives to Solid Power — All-solid-state battery developer using sulfide electrolytes for safer, higher-energy EVs

Users searching for Solid Power alternatives are typically evaluating next-generation solid-state battery technologies for electric vehicles. Solid Power focuses on sulfide solid electrolytes paired with silicon or lithium-metal anodes to deliver higher energy density and improved safety versus conventional lithium-ion. Its cells target automotive pack-level gains in range, cost, and volume while leveraging existing roll-to-roll manufacturing processes. Because Solid Power remains pre-commercial and investor-focused, many researchers and OEMs also examine competing solid-state developers, established battery giants scaling silicon anodes, and lithium-metal startups. This page compares Solid Power’s electrolyte chemistry, cell formats, and automotive partnerships against other well-known players so you can match specific energy, cycle-life, and production-readiness requirements.

The 8 best Solid Power alternatives

1.GBatteries

8 Best Solid Power Alternatives & Competitors (2026)

The 8 best Solid Power alternatives

1.GBatteries

2.QuantumScape

3.CCATL

4.PPanasonic

5.LG Energy Solution

6.Samsung SDI

7.Northvolt

8.Factorial Energy

Solid Power alternatives — frequently asked questions

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