Best Oil & Gas Downstream Companies in California, United States
The 56 best Oil & Gas Downstream companies in California, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: C-Zero.
Ranked: Best Oil & Gas Downstream companies in California
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | C-Zero Distributor of natural gas 27Funding top 38%Moat top 45%Patents bottom 45%Talent bottom 45% All 8 signals ▾Fundingtop 38% Moattop 45% Patentsbottom 45% Talentbottom 45% Globalbottom 39% Innovationbottom 38% Marketbottom 32% Newsbottom 18% Funding: Raised $50.5M · 4 rounds over 5 yrs (0.8/yr) Moat: Editorial + unicorn rating 1/10 · IP moat: 37 patents rank vs industry peers · Fliar Intelligence Index 27/100 | $50M | 22 mo ago | Series B | Zach Jones CEO | 2018 | — | 37 patents Patents concentrated in chemistry & materials | — |
| 2 | Meridian Energy Group Developer of environmentally compliant crude oil refineries | $26M | 76 mo ago | Series A | — | 2012 | WordPressMySQLPHP+29 | — | — |
| 3 | Pricelock Provider of sourcing and manufacturing solutions for the fashion industry | $12M | 184 mo ago | Deadpooled | — | 2007 | — | 33 patents Geospatial retail commodity price forecasting and price‑protection contract automation | — |
| 4 | SoCal Propane Propane distribution company | $2M | 85 mo ago | Series A | — | 2013 | — | — | — |
| 5 | Reaction35 Producer of petrochemicals and fuels from light hydrocarbons | $2M | 88 mo ago | Seed | Jeffrey Sherman CEO | 2008 | — | 8 patents Catalytic conversion of light alkanes to olefins and alkylate fuels | — |
| 6 | kraftwerk Provider of products and services for oil and gas transportation | $689K | 49 mo ago | Funding Raised | — | 2016 | — | — | — |
| 7 | Rally Power Provider of gas station services | $20K | 28 mo ago | Seed | — | 2013 | — | — | — |
| 8 | SDG&E Provider of gas and electricity | — | 14 mo ago | Funding Raised | Caroline Winn CEO | 1881 | Cart FunctionalityDrupalApple iCloud Mail+23 | 291 patents Nanoparticle drug delivery systems and pulsed‑power downhole drilling equipment | 1 partnership |
Top 12 Oil & Gas Downstream companies in California
#1
Series B · Goleta, California · founded 2018 · 27 employees$50.5Mraised▾
Developer of natural gas decarbonizing technology designed to avoid the generation of carbon dioxide from energy processing. The company's proprietary technology uses high-temperature catalytic melt systems to break down methane, the primary molecule in natural gas, into hydrogen and solid carbon, enabling energy consumers to reduce emissions and get low-cost energy on demand.
#2
Series A · Irvine, California · founded 2012 · 50 employees$26.4Mraised▾
Developer of environmentally compliant crude oil refineries. It develops and operates refineries designed for efficiency and minimal environmental impact. The company utilizes advanced technologies and adheres to stringent environmental standards in its operations. A focus on innovation is central to its approach, integrating state-of-the-art instrumentation and control technologies. The refineries are strategically located to optimize crude oil sourcing and fuel distribution to regional markets.
#3
Deadpooled · Redwood City, California · founded 2007 · 11 employees$12Mraised▾
Provider of sourcing and manufacturing solutions for the fashion industry. It offers a complete solution from concept to retail, encompassing design, sampling, and delivery services for women's, men's, girls', boys', baby, and active wear. The company leverages global manufacturing capabilities, tailoring its services to meet specific client needs, including proximity to retail markets or cost optimization strategies. Support services and technical innovation are also integral parts of its offerings.
- Mar 2011Series B$12M
- Oct 2010Series A—
#4
Funding Raised · Palo Alto, California · founded 2016 · 22 employees$689.4Kraised▾
Provider of products and services for oil and gas transportation
- May 2022Grant (prize money)$53.8K
- Dec 2019Grant (prize money)$577.5K
- Sep 2018Grant (prize money)$58K
- Apr 2018Grant (prize money)—
#5
Seed · Santa Barbara, California · founded 2008$2.1Mraised▾
Producer of petrochemicals and fuels from light hydrocarbons
- Feb 2019Grant (prize money)$150K
- Feb 2016Grant (prize money)$1.1M
- Feb 2012Seed$2.1M
#6
Series A · Hemet, California · founded 2013$2.4Mraised▾
Provider of propane supply services intended to accommodate all ground propane needs. The company's services are value-based and affordable and include installing, upgrading, and exchanging equipment, enabling agriculture and light industry sectors to use propane as their source of fuel to power their dairy farms and greenhouses.
#7
Seed · Venice, California · founded 2013$20Kraised▾
Provider of gas station services
#8
Funding Raised · San Diego, California · founded 1881 · 4700 employees—raised▾
Provider of gas and electricity
#9
Funding Raised · Sacramento, California · founded 1946 · 368 employees—raised▾
Hunt & Sons is a petroleum product distribution company that provides commercial fleet fueling, bulk fuel supply, and lubricant solutions for industrial, commercial, agricultural and automotive purposes. Provides distribution of various products such as gasoline, diesel fuel, biodiesel, gasoline, E85, kerosene, jet fuel, and Chevron, Valvoline and Phillips 66 lubricant products. Operates 13 office and warehouse facilities and 38 commercial card lock fueling sites.
#10
Public · Newport Beach, California · founded 1997 · 917 employees—raised▾
Provider of natural gas for transportation services
#11
Funding Raised · Ontario, California · founded 1911 · 2300 employees—raised▾
Manufacturer of electronic soft-tip darts and related tournament products. It designs, manufactures, and distributes electronic dartboards for both commercial and home use. The company also organizes and promotes dart tournaments, including a major annual world championship event. Additionally, it publishes a magazine for dart players and provides support for leagues and tournaments. The business includes the development and sale of related accessories and merchandise.
#12
Public · Westlake Village, California · founded 1995 · 54 employees—raised▾
Producer and distributor of liquefied natural gas (LNG), offering turnkey energy solutions. It provides LNG to transportation, industrial, and municipal markets. The company offers complete fuel solutions, including delivery of LNG, RLNG, and LCNG fuel, along with storage and dispensing equipment. Its LNG is produced using renewable natural gas to minimize environmental impact. The goal is to provide cleaner energy solutions tailored to individual customer needs, ensuring a reliable energy supply and superior service.
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Oil & Gas Downstream coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.