L

Lunar Energy

Modular energy storage system for homes

Senior ATE Mechanical Engineer

Full-TimePosted on 9/29/2026
$150k - $170k/yr+ Equity
Senior
Mountain View, CA, USA
In PersonApproximately 10–20% travel to domestic and international contract manufacturing sites as required.

About the job

Requirements
  • Extensive experience with 3D modeling software such as Onshape, NX, or SolidWorks.
  • Knowledge of how to make a PCBA Bed of Nails fixture.
  • Detailed knowledge of 2D drawing creation and geometric dimensioning and tolerancing (GD&T).
  • Ability to analyze designs using tolerance analysis and stack-up, statics and load-path analysis, finite element analysis, root-cause analysis, and design failure modes and effects analysis.
  • Familiarity with electronic test equipment and basic electromechanical troubleshooting.
  • Experience with test fixtures, jigs, and mechanical components designed for high cycle counts.
  • Experience with fine-pitch assemblies and construction.
  • Ability to conduct strain-gauge measurements, understand stress on PCBAs, and incorporate designs that avoid that stress.
  • Experience with PCBA management, such as mechanical control outline generation.
  • Working knowledge of pneumatic cylinders and control methods.
  • Working knowledge of thermal management techniques.
  • Prototyping skills using 3D printing, machining, sheet-metal bending, laser cutting, milling, and general machine-shop tools.
  • Ability to manage suppliers for parts required for station construction.
  • Experience communicating with component suppliers, including design-for-manufacturing report review, first article inspection, and part production approval process.
  • Ability to generate work instructions for electromechanical assemblies.
  • Knowledge of process failure modes and effects analysis.
  • Ability to create preventive-maintenance documentation.
  • Extensive experience with onsite build support at domestic and international contract manufacturing sites.
  • Ability to generate detailed design documentation.
  • Ability to drive a project from start to deployment involving cross-functional teams, vendors, and technicians.
  • Ability to collaborate with other engineers, including electrical engineers and automated test engineers.
  • Ability to create concise slide decks and communicate clearly verbally and in writing.
  • Ability to give direct feedback constructively and receive feedback with an open mind.
Responsibilities
  • Work with collaborators across the company to refine how products can create impact, reach the market quickly, and operate reliably for customers.
  • Brainstorm and evaluate solutions, weigh their pros and cons, and narrow down options.
  • Test ideas and designs using methods ranging from back-of-the-envelope calculations to physical tests and multiphysics simulations.
  • Design high-performance, reliable, easy-to-manufacture parts and assemblies using a variety of high-volume manufacturing processes.
  • Create and review drawings and other part specifications.
  • Manage bills of materials, cost and mass roll-ups, vendors, and engineering releases.
  • Define manufacturing processes and inspection methods.
  • Collaborate directly with part manufacturers to support prototypes and production.
  • Provide onsite build support at domestic and international contract manufacturing sites, with approximately 10–20% travel as required.

About the company

Lunar Energy builds a modular residential energy storage system that stores solar power for use during peak hours or outages. The Lunar System is expandable with additional modules and works with home solar installations, controlled via a smartphone app that shows usage and storage data. It differentiates itself by its scalable brick-by-brick design and by partnering with solar installers to offer the system as part of their packages. The goal is to help homeowners save on energy bills, gain energy independence, and maintain power reliability.

Company Size

201-500

Company Stage

Series D

Total Funding

$532M

Headquarters

Mountain View, California

Founded

2020

Get referred to Lunar Energy

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • February 2026 funding totaled $232 million, backing manufacturing and software expansion.
  • April 2026 Texas launch with Octopus Energy removes upfront cost for homeowners.
  • July 2026 Japan expansion added Chubu Electric Power Miraiz and new VPP revenue.

What critics are saying

  • Base Power raised $1 billion in 2025, intensifying residential battery competition immediately.
  • Lunar's headcount fell to 281 by March 2026, signaling operational strain.
  • If Texas and Japan rollouts stall, Lunar remains dependent on crowded California demand.

What makes Lunar Energy unique

  • Gridshare powers seven of Japan's ten largest utilities, including TEPCO, in 2026.
  • Lunar combines home batteries, software, and utility control into one VPP stack.
  • The Lunar System spans 15-kWh and 30-kWh modules, with Tesla and Enphase compatibility.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Health Insurance

Dental Insurance

Vision Insurance

Unlimited Paid Time Off

401(k) Retirement Plan

401(k) Company Match

Paid Parental Leave

Phone/Internet Stipend

Wellness Program

Growth & Insights and Company News

Headcount

6 month growth

↑ 0%

1 year growth

↓ -1%

2 year growth

↓ -1%
Lunar Energy
Sep 10th, 2026
A letter from our Founder and CEO: welcoming Mark Gudiksen as President of Lunar Energy.

A letter from its Founder and CEO: welcoming Mark Gudiksen as President of Lunar Energy. Kunal Girotra Founder and CEO Published on September 10, 2026 Today, I'm thrilled to welcome Mark Gudiksen to Lunar Energy as President. Mark has been part of the Lunar story for years. He's a board member, a longtime investor through his work as Managing Partner at Piva Capital, and one of its very first customers. Over the years, he's built a deep understanding of its business, its products, its customers, and the opportunity in front of Lunar Energy, Inc.. More than that, he cares deeply about what Lunar Energy, Inc. is building. Homes are electrifying, utility bills are rising, and the grid is under more pressure. As these trends converge, distributed energy is becoming a bigger part of how Lunar Energy, Inc. power everything in its lives. This is an important growth moment for Lunar. In February, Lunar Energy, Inc. announced $232 million of prior funding. Since then, Lunar Energy, Inc. has grown deployments of the Lunar System, worked closely with its installation partners, introduced new offers with partners like Octopus Energy, and expanded into new markets. The next phase is about bringing all of this to more customers, in more places, at greater scale. Adding Mark as President gives Lunar Energy, Inc. another leader who's been invested in this work for years and is ready to help build what's next alongside its exceptional team. Lunar has always been built by people who believe energy can work better - for the homeowners and businesses who depend on it, and for the grid that serves them. I'm looking forward to building what comes next with Mark and the whole Lunar team. Kunal Girotra Founder and CEO Kunal is Founder and CEO of Lunar Energy. He has 20 years of experience as an engineer, technology leader and entrepreneur.

Yahoo Finance
Apr 30th, 2026
Octopus Energy offers Texans 30 kWh batteries with 3-year fixed electricity at 8¢/kWh

Octopus Energy and Lunar Energy are offering Texas customers an electricity plan combining a 30-kWh home battery with fixed energy pricing for three years. Participating customers receive the Lunar Energy battery at no upfront cost, paying a $45 monthly subscription fee plus electricity at a flat rate starting at 8 cents/kWh. The batteries will provide grid services and home backup during outages. PowerStore is initially available to a limited number of Texas homes but could expand later. The batteries can pair with solar inverters from six manufacturers, including Tesla, SolarEdge and Enphase. The programme follows similar battery-based retail electricity offerings in Texas. Guadalupe Valley Electric Cooperative recently announced plans to expand its battery partnership with Base Power from 2 MW to 50 MW over the next two to three years.

RealtyNXT
Feb 10th, 2026
Lunar Energy Secures $232 Million To Expand Home Battery Systems And VPP Software

Lunar Energy secures $232 million to expand home battery systems and VPP software. The Mountain View-based ClimateTech firm will use the funding to expand home battery deployments and scale AI-driven virtual power plant software nationwide. Mountain View - based Lunar Energy has secured a total of $232 million across its Series C and Series D funding rounds to accelerate the deployment of residential battery systems and scale its AI-powered Virtual Power Plant (VPP) software. The latest $102 million Series D round was oversubscribed and led by B Capital and Prelude Ventures, following an earlier, undisclosed $130 million Series C round led by Activate Capital. The combined funding will support Lunar's national expansion after a strong rollout in California and further development of its distributed energy software platform, Lunar Gridshare. The platform currently operates some of the largest VPP programs in the United States, enabling utilities and energy providers to manage distributed energy resources more efficiently. Additional investors participating across both rounds include DCVC, Piva Capital, Leitmotif, Sunrun, Itochu Corporation, and Q Capital Partners. Founded on the belief that the energy transition requires tightly integrated hardware and software, Lunar Energy develops home battery systems paired with AI-driven optimization tools. The company has already deployed thousands of systems and manages approximately 650 MW of distributed devices across multiple regions globally. Commenting on the funding, founder and CEO Kunal Girotra said the investment reinforces Lunar's long-held view that neither hardware nor software alone can solve electrification challenges. He added that the new capital will help homeowners transition to cleaner energy while actively supporting a more resilient electricity grid. Lunar's Gridshare platform is currently used by Sunrun to manage distributed power plants across several U.S. markets, including New England, Hawaii, and Puerto Rico. In California, Community Choice Aggregators are using the platform to design and operate new distributed energy programs, while utilities and energy retailers in Europe and Asia are also partnering with Lunar to advance grid modernization. For homeowners, Lunar's AI-led approach has translated into measurable financial benefits. In 2025, customers participating in VPP programs earned an average of $464, along with additional savings of $338 compared to conventional battery usage. Lunar's systems are designed in California and assembled in Georgia and Washington, supporting domestic manufacturing and eligibility for clean energy tax incentives. Investors highlighted Lunar's integrated model as a key differentiator in a rapidly evolving energy storage market. B Capital's Jeff Johnson said the company's ability to combine intelligent battery hardware with advanced optimization software positions it as a critical player in strengthening grid resilience and improving household energy affordability. Prelude Ventures Managing Director Tim Woodward noted that Lunar's system architecture and software intelligence have driven strong market traction, while Activate Capital Managing Partner Raj Atluru emphasized the growing importance of distributed storage solutions amid rising power demand, aging infrastructure, and climate-related grid disruptions.

Canary Media
Feb 5th, 2026
Lunar Energy lands $232M to boost smart home batteries

The Silicon Valley startup wants to enter new markets, like Texas, and enroll more customers in virtual power plants that make the grid more reliable and…

Mercom India
Feb 5th, 2026
VPP Software Provider Lunar Energy Raises $232 Million

VPP software provider Lunar Energy raises $232 million. Lunar will use the funding to expand its products and scale its Gridshare platform Integrated home battery systems and virtual power plant (VPP) software provider, Lunar Energy, has raised $102 million in a Series D funding round led by B Capital and Prelude Ventures. Lunar Energy will utilize the funding to expand its hardware and software products. It will also use the funding to scale its AI-driven distributed power software platform, Lunar Gridshare. Lunar Energy said this platform is managing major distributed resources/VPP programs in the U.S. The company had earlier raised $130 million in an unannounced Series C funding round led by Activate Capital. Funding from these two rounds totaled $232 million. These funding rounds also included participation from DCVC, Piva Capital, Leitmotif, Sunrun, Itochu Corporation, and Q Capital Partners. Lunar Energy is managing 650 MW of distributed energy devices. The company's major clients include residential solar and battery storage provider Sunrun, which utilizes the Gridshare platform for its distributed power plants in multiple markets, such as New England, Hawaii, and Puerto Rico. The platform is also used by non-profit electricity procurement entity, California Community Choice Aggregators, to develop and deploy new distributed power programs across the state. Lunar Energy's clients also include utilities and retailers in Europe and Asia. The company said its VPP earned customers an average of $464 per customer. It also claimed that the software provided customers with an additional $338 in savings compared to a standard home battery operating mode. Venture capital investment in energy storage gained momentum in 2025, rising 30% year over year to $4.8 billion across 75 deals, even as total corporate funding for the sector declined 19% to $16.2 billion, according to Mercom Capital Group's Annual and Q4 2025 Funding and M&A Report for Energy Storage. Overall corporate funding totaled $16.2 billion across 119 deals in 2025, down from $19.9 billion raised through 116 deals in 2024. Despite the decline in total capital raised, deal activity increased 3% during the year, indicating continued investor engagement in the sector.