a16z-Backed Base Power Delivers Cheaper Energy to Strained Grids

Energy storage innovator Base Power, backed by prominent venture firm Andreessen Horowitz (a16z), has expanded its operations into Illinois, marking its first foray into the beleaguered PJM Interconnection grid territory. The startup, which deploys large-scale home battery systems, commenced selling electricity to residents yesterday at rates significantly below traditional utility providers. This strategic move directly addresses the PJM grid’s intense strain from soaring electricity demand and infrastructure bottlenecks, offering a decentralized solution for cheaper, more reliable power.

The PJM Interconnection, which manages the largest U.S. power grid by territory, has faced severe challenges in recent years. Its vast service area includes critical zones like Northern Virginia, a global hub for data centers that contribute heavily to an escalating power crunch. The immense demand, coupled with a dearth of new energy sources, has driven wholesale electricity prices in PJM to nearly double over the past year, according to a recent watchdog report.

This escalating crisis has prompted significant concerns, with even major regional utilities like AEP threatening to withdraw from the market. Further exacerbating the issue, PJM had halted applications for new generating sources in 2022, only reopening the queue in April 2026. This prolonged pause occurred precisely as electricity demand surged dramatically over the last four years, creating a critical gap in supply development.

Base Power's entry is strategically timed to bypass these systemic issues. The company, which initially launched in Texas two years ago, has developed a virtual power plant model centered on residential batteries. These systems, starting at 25 kilowatt-hours, are considerably larger than many consumer-grade alternatives, and Base Power operates them by selling electricity directly to customers rather than just the hardware.

In Illinois, Base Power is offering electricity at rates 25% lower than the local utility, ComEd. This competitive pricing is made possible by the company's ability to optimize energy flows: charging batteries when grid prices are low and discharging power when demand, and thus prices, peak. In Texas, Base Power already manages over 500 megawatt-hours of battery storage using this approach.

A key advantage of Base Power's strategy lies in its ability to circumvent PJM’s notoriously slow and troubled interconnection queue. As founder and CEO Zach Dell explained to Canary Media, “We are deploying capacity behind the meter at the residential home, where an interconnection already exists, so we don’t wait in the interconnection queue.” This innovative deployment model allows for rapid scaling without being bogged down by bureaucratic delays.

Base Power’s accelerated expansion follows substantial financial backing. In October 2025, the company secured a significant $1 billion funding round led by Addition. This investment built on an earlier $200 million round in April 2025, which saw participation from prominent investors including Andreessen Horowitz, Lightspeed Venture Partners, and Valor Equity Partners. This strong investor confidence underscores the potential impact of Base Power’s decentralized energy solution.

The startup’s model presents a promising blueprint for alleviating stress on aging power grids across the nation, especially those struggling to integrate new technologies and meet burgeoning demand from energy-intensive sectors like artificial intelligence and data centers. By democratizing access to cheaper, more reliable power directly at the residential level, Base Power is poised to reshape how communities interact with and contribute to grid stability.

FAQ

Q: What is Base Power's core business model?

A: Base Power installs large-scale battery systems at residential homes to form a virtual power plant. Rather than selling the batteries outright, they provide electricity to customers at reduced rates while strategically managing the batteries to charge during low-cost periods and dispatch power when grid demand is highest.

Q: How does Base Power avoid the typical delays in connecting new power sources to the grid?

A: Base Power bypasses lengthy interconnection queues by deploying its battery systems "behind the meter" at existing residential properties. Since these homes already have grid connections, the process of integrating Base Power's storage is significantly faster and less bureaucratic than traditional large-scale energy projects.

Q: Why is Base Power's expansion into the PJM territory particularly significant?

A: The PJM Interconnection grid is currently facing immense pressure from rapidly increasing electricity demand, particularly from data centers, leading to rising wholesale prices and reliability issues. Base Power's decentralized approach offers a crucial solution by rapidly adding flexible capacity, lowering costs for consumers, and enhancing overall grid stability in a region severely in need of innovative energy solutions.