Industrials startups in Southern California
Manufacturing, hardware, and physical-world operations. Overlaps heavily with the region's decades-old aerospace and defense manufacturing base, now extending into robotics and automated production.
Valar Atomics, Radiant Industries, and Newlight Technologies are the best-funded companies in this category, and two of the three are headquartered in El Segundo — no coincidence. This category leans hardest on Southern California's decades-old aerospace and defense manufacturing base, the same South Bay corridor that built the Space Shuttle and the Predator drone, now home to a new generation of hard-tech and hardware startups.
Companies

Scales nuclear energy for industrial power and clean hydrocarbon fuel via high-temperature gas reactors.


Develops, owns, and operates utility-scale battery energy storage, with 2.0 GWh operating and over $1B invested since 2017.

Series C$124.0MAI-guided robotic metal forming for automotive, aerospace, and defense manufacturing.

Bespoke ultra-high-performance hypercar manufacturer behind the HF-11.

Evotrex is electrifying the RV by designing its products as mobile energy systems combining onboard power generation, energy storage, and intelligent energy management.

Newlight | AirCarbon - a natural, carbon-negative, regenerative, ocean-degradable material that can replace plastic. Harnessing the technology in nature to improve the world.
The El Segundo aerospace-parts manufacturer, known as Amca, launched with $76.5 million in initial funding from Caffeinated Capital.

Factory-produced, deployable fission microreactors to provide strategic energy for mission-critical systems across Earth, space, and underseas.

We’re an integrated photonics company in California building the light engines that power the next era of quantum technology — from advanced computing to precision sensing.

Tosi Snacks sells nutrient-dense crunchy bars and crispy puffs made with real ingredients, packed with protein and fiber, and containing no cane sugar.
EVH manages government contracts from award to completion by coordinating qualified subcontractors, ensuring compliance, and keeping performance on track.
TS Conductor's AECC technology doubles or triples capacity while cutting costs. Safe, easy installation with industry-leading performance.
Terraform Industries is scaling technology to produce cheap natural gas with sunlight and air, committed to cutting net CO2 flux from crust to atmosphere as quickly as possible.
JIMMYASH LLC makes mainstream foods, such as go free® chips and mini fries, that are water-air cooked to reduce fats and calories and eliminate preservatives, GMOs, and saturated fats.
Provivi using modern science to help farmers protect crops in a naturally effective and sustainable way.

KinderFarms provides cleaner care products for kids, including hydration solutions like electrolyte solutions and daily replenishing drink mixes, as well as medicines and supplements such as pain & fever, infant's cough, and children's cold & cough remedies, all free from unnecessary ingredients like artificial dyes, sweeteners, and flavors.

Coast Energy partners with commercial property owners to convert underutilized spaces into revenue-generating energy assets. Zero capex solar, storage & microgrid solutions that increase NOI and future-proof your portfolio.

hiyo Inc. produces non-alcoholic functional seltzers, referred to as social tonics, which contain functional ingredients like ashwagandha, L-theanine, and lion's mane.
The leader in lightweight fiberglass travel trailer design. Experience one of our luxury campers with our unique, flexible Adaptiv™ system.

Fluid Efficiency’s removable DRA is designed to unlock capacity in natural gas liquids pipelines by reducing drag and then being removed before downstream processing.

Recurve helps utilities, implementers, and partners transform customer data into reliable, cost-effective demand-side programs built to perform.

NEXT Energy Technologies develops next-gen organic photovoltaic (OPV) solutions for vision and spandrel glass, creating energy-producing solar facades.
Hyperion is focused on bringing sustainable energy to market for a better future. The company develops hydrogen fuel cells, energy storage, and advanced mobility solutions.
A federally licensed (ATF FFL) firearms manufacturer/dealer based in Irvine, CA, with patents assigned to inventor David Roth.

Powur: Accelerating the adoption of sustainable energy worldwide.
Cost Competitive Space Electricity

Check out the latest expert insight, news and case studies in agricultural innovation for development with Farming First.
Stetson Steel supplies quality steel and galvanized products as well as ornamental iron.

Providing solar installations to commercial, industrial, and agricultural facilities. Trinary Energy uses a power purchase agreement to provide renewable energy at no up-front cost to you.

Lumiterra is a brand-new, multiplayer, open-world survival crafting game where you can battle, farm with your friends or mysterious collected creatures in a vast world!
The ultimate small-batch luxury organic skincare experience. Feed your skin with all natural, nutrient-filled ingredients. Every unique bottle has a birthday. You are worthy of extraordinary care.
Congo Food Inc. specializes in the production, commercialization, and export of agricultural products, including certified organic and Rainforest Alliance cacao, and offers agricultural consulting services.
Disrupting Tobacco

FarmSense provides automated digital 24/7 pest monitoring for growers using novel patented FlightSensors and an AI cloud-based Machine Learning Engine to detect and classify multiple pest species in various crops.

Rincon Consultants, Inc. was founded in 1994 and has grown to be a leading environmental consulting firm throughout California.

Calico Building Services is a leading nationwide provider of commercial janitorial, repair, maintenance and construction services.
Operates as SON-AERO, an aircraft-parts manufacturer originally founded in 1955 and placed under new ownership in 2018 -- a legacy manufacturer rather than a new startup.
Alderbuck Energy is modernizing power distribution with solid-state transformer technology built for the electricity demands of AI, EVs, and the modern grid.

Pi Energy has developed innovative technology that combines standard and novel components to create flexible silicon solar that can be ultra-thin, easily installed on most surfaces, and can capture more energy per day than conventional silicon PV.
Arena Renewables, co-founded in 2023 by CEO Matthew Kozey along with Geoff Johnson and Patrick Grumley, was acquired by Headwater Energy in 2026 along with its roughly 1 GW distributed solar and storage pipeline.

Discover the benefits of renewable energy by creating a community solar site for a sustainable future.
Founded in 2016 by Veejay Patell along with his sons Rudy and Achyut, who started the Lake Forest, CA company in their family garage; it has drawn backing from Pet Care Innovation.

Redbloom is the only gut healthy chili crisp bringing bold flavors to sensitive guts. Seed-Oil Free, Vegan, Low Fodmap, GF. We microencapsulate chili peppers in oleic acid from avocado oil, creating a layer of healthy fat to cushion the gut from spicy flare-ups - making the product truly gut-healthy.

Nutralase® is a precision enzyme system from Alcheme Bio that removes off-flavors from plant proteins at the molecular source — clean label, drop-in, no reformulation.