Overview

Plus Power is a battery energy storage developer, owner, and operator headquartered in San Francisco, California. Founded in 2018, it reports an estimated 200-500 employees and an estimated $100-250M revenue band. The company is privately held and serves the automotive, electric-vehicle, electronics, construction, plumbing-hardware, and renewable-energy industries. Its utility-scale battery systems store surplus renewable energy and provide grid services. In April 2026, the company signed an energy storage agreement for an 800 MWh battery project in Alabama.

At a glance

What Plus Power makes

The company holds IATF 16949, ISO 14001, and ISO 9001 certifications and lists battery and transmission products among its offerings.

Products and capabilities described on the company's own site include Battery, Transmission (source: pluspower.com).

Certifications

Plus Power is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:

• IATF 16949 — made-in-china.com

• ISO 14001 — made-in-china.com

• ISO 9001 — made-in-china.com

Latest developments

• 2026-04-24 — Plus Power signs ESA for 800MWh Alabama BESS - Energy-Storage.News (energy-storage.news)

• 2026-04-23 — News – Plus Power (pluspower.com)

• 2026-04-21 — TVA and Plus Power's Crawfish Creek Energy Storage Sign on 200 MW Battery Project to Strengthen Power Affordability and American Energy Dominance (prnewswire.com)

• 2026-02-11 — Maine's Largest Utility-Scale Battery Energy Storage System Now Online (prnewswire.com)

• 2025-11-13 — Sheppard Mullin Advises Plus Power in New England Energy Storage Project Investments | Sheppard (sheppard.com)

• 2025-11-05 — Plus Power Secures $160 Million in Tax Equity Investments for its Landmark ISO-NE Battery Storage Projects (prnewswire.com)

Facilities

Plus Power is headquartered in San Francisco, California. Public sources also reference these locations:

• Gorham, Maine — prnewswire.com

• Carver, Massachusetts — prnewswire.com

Company details

Plus Power was founded in 2018, has an estimated 200-500 employees, and is headquartered in San Francisco, California. On the LightSource stability read it is rated "Established & active": 8 years in operation (founded 2018). Holds IATF 16949, ISO 14001, ISO 9001 certification(s) per public sources.

Frequently asked questions

What does Plus Power make?

Plus Power is a battery energy storage developer, owner, and operator headquartered in San Francisco, California. Founded in 2018, it reports an estimated 200-500 employees and an estimated $100-250M revenue band. The company is privately held and serves the automotive, electric-vehicle, electronics, construction, plumbing-hardware, and renewable-energy industries. Its utility-scale battery systems store surplus renewable energy and provide grid services. In April 2026, the company signed an energy storage agreement for an 800 MWh battery project in Alabama.

Where is Plus Power headquartered?

Plus Power is headquartered in San Francisco, California (201 Spear Street, San Francisco, California, 94105).

When was Plus Power founded?

Plus Power was founded in 2018.

How big is Plus Power?

Plus Power has an estimated 200-500 employees, with revenue in the $100-250M range (estimated).

What certifications does Plus Power hold?

Plus Power lists IATF 16949 · ISO 14001 · ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.

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Last verified Nov 2026. Is this your company? Request a correction.