SPAC firms: Stem Inc CEO steps down, Energy Vault warned over share price

LinkedIn
Twitter
Reddit
Facebook
Email

Stem Inc has seen its CEO step down while Energy Vault has been warned by the New York Stock Exchange (NYSE) over its low share price, in a double helping of unfortunate announcements from special purpose acquisition company (SPAC)-listed energy storage firms.

Battery energy storage system (BESS) project integrator Stem Inc CEO John Carrington has stepped down with immediate effect, the company said on Monday (16 September), though will continue to serve in an advisory capacity until the end of 2024. A search is underway for a permanent replacement with the chair of the board David Buzby hired as interim CEO.

The company is still undergoing a strategic review, launched when its Q2 results included falling sales, bookings and a 40% loss in share price. The NYSE then warned the company around a month ago that its share price traded under US$1.00 for 30 consecutive days, the minimum average closing price needed to continue as a listed firm.

Energy Vault, a company known for its gravity energy storage technology but that has recently expanded into BESS too, received the same notification from the NYSE last week, it said (on 13 September). The company’s recent results were also badly received by the market, with a significant drop in sales and a reduction in its 2024 guidance.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

The two companies were part of a wave of energy storage technology firms to have gone public via SPAC transactions in the years in 2020-2023. However, as Energy-Storage.news explored in a Premium article last August, they, along with Eos and ESS Inc, have severely underperformed against expectations since going public.

15 September 2026
San Diego, USA
You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more.

Read Next

Premium
June 9, 2026
ESN Premium speaks with Dr Thomas Sisto, of flow battery developer XL Batteries, about using LDES to combat grid strain from heatwaves and data centres.
June 8, 2026
California-headquartered developer esVolta has closed an expanded corporate credit facility providing up to US$450 million of capital to expand new utility-scale energy storage projects in the US.
June 5, 2026
Developer EDF power solutions North America and developer-operator Abu Dhabi Future Energy Company – Masdar, have entered into 15-year power purchase agreements (PPAs) for a California, US solar-plus-storage project.
June 5, 2026
Virtual power plant (VPP) operator and distributed energy resource (DER) platform Voltus and tech giant Google have signed a three-year 100MW agreement for the PJM region in the US.
Premium
June 4, 2026
Energy-Storage.news Premium speaks with Arnab Pal, executive director at nonprofit Deploy Action, about the company’s recent California polling results.