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101 Most Innovative California Based Energy Efficiency Companies & Startups

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This article showcases our top picks for the best California based Energy Efficiency companies. These startups and companies are taking a variety of approaches to innovating the Energy Efficiency industry, but are all exceptional companies well worth a follow.

We tried to pick companies across the size spectrum from cutting edge startups to established brands.

We selected these startups and companies for exceptional performance in one of these categories:

  • Innovation
    • Innovative ideas
    • Innovative route to market
    • Innovative product
  • Growth
    • Exceptional growth
    • Exceptional growth strategy
  • Management
  • Societal impact

Top California Energy Efficiency Startups

Data sourced from Crunchbase and SemRush.

Turntide Technologies

Turntide Technologies

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Turntide Technologies develops an electric motor system designed to drive down energy consumption.

EcoFlow

EcoFlow

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EcoFlow designs, develops and manufactures eco-friendly and affordable portable power stations for personal and professional use.

EcoFlow

Stem

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Stem brings and optimizes energy consumption to business through its distributed storage technology.

EcoFlow

Voltus

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Voltus provides cash-generating energy products to commercial, institutional, and industrial customers.

EcoFlow

Carbon Lighthouse

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Delivering easy building decarbonization for commercial real estate owners

EcoFlow

Esperanto Technologies

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Esperanto Technologies develops high-performance, energy-efficient chips for Machine Learning based on the open standard RISC-V ISA

EcoFlow

Redaptive

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Redaptive is an Efficiency-as-a-Service tool for commercial and industrial customers.

EcoFlow

Dividend Finance

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Dividend Finance is a Technology-enabled finance platform supporting the energy transition with lending and other financial solutions.

EcoFlow

Inspire

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Consumer technology platform that powers cleaner, more efficient, and more sustainable homes.

EcoFlow

Ygrene Energy Fund

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Provides Property Assessed Clean Energy (PACE) financing through cities and counties for upgrades to commercial and residential properties.

EcoFlow

General Atomics

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General Atomics develops technology solutions for defense, energy, and transportation applications worldwide.

EcoFlow

Spruce Finance

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Spruce provides consumer financing for residential solar systems, water conservation upgrades and energy-efficient home improvements.

EcoFlow

Enervee

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Enervee is a platform-oriented company that drives energy efficiency and consumer engagement through a suite of innovative SaaS products.

EcoFlow

Nautilus Data Technologies

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Nautilus Data Technologies is a collection of data centers used in large businesses.

EcoFlow

Renovate America

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Renovate America is leading the way in making homes and communities more energy and water efficient.

EcoFlow

Fenix International

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Fenix International produces ultra-affordable mobile enabled solar solutions to empower more than 1.3 billion people living off-grid.

EcoFlow

Auto Motive Power

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Auto Motive Power is an energy management company that specializes in charging and battery management systems (BMS).

EcoFlow

Project Frog

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Project Frog develops component buildings that assemble easily onsite for architects and builders to create energy-efficient buildings.

EcoFlow

Imprint Energy

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Imprint Energy is commercializing a breakthrough low cost, flexible, rechargeable battery technology that would change portable power.

EcoFlow

Ecomedes

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Ecomedes is a SaaS platform that helps manufacturers, designers, builders, and building owners save time and money.

EcoFlow

Amber Solutions

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Amber Solutions is a developer of patented solid-state technologies for the digital control of electricity.

EcoFlow

Clean Power Finance

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Clean Power Finance offers an online B2B marketplace that connects the solar industry with financing opportunities and solar sales software.

EcoFlow

Sighten

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Sighten develops a software toolset to manage the complexity of distributed solar.

EcoFlow

Flex Energy Solutions

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Flex Energy Solutions designs and manufactures power generating systems for private and public entities.

EcoFlow

LumiGrow

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Empowering Growth Through Connectivity is our mission, offering the industry’s leading smart horticultural lighting solutions.

EcoFlow

Biosynthetic Technologies

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Biosynthetic Technologies manufactures biobased synthetic molecules that are made from organic fatty acids found in plant oils.

EcoFlow

Borrego Solar Systems

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Borrego Solar Systems develops commercial, residential and public sector turnkey, grid connected solar electric systems.

EcoFlow

Encored

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Encored provides Energy Big Data Platform based on breakthrough disaggregation technology and data science.

EcoFlow

SolarMax Technology

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SolarMax Technology is a renewables & environment company that offers solar design and installation services.

EcoFlow

Ultrasolar technology

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Ultrasolar technology is a solar energy company that develops solar space systems.

EcoFlow

Kleverness

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IoT, SaaS, Smart Buildings, Smart Hotels, Smart Home, Automation, Energy Efficiency, Clean Tech, Green Tech

EcoFlow

UtilityAPI

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UtilityAPI is a service that automatically collects utility bill and usage data from utility web portals.

EcoFlow

ADOMANI

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ADOMANI is a provider of zero-emission electric and hybrid vehicles and drivetrain solutions helping fleet operators with their business.

EcoFlow

Lime Energy

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Lime Energy is building a new energy future. Our integrated demand side solutions provide utilities with a single platform to deliver

EcoFlow

PowWow Energy

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PowWow Energy, Inc. is a leading innovator in the Agriculture & Food sector.

EcoFlow

Cirrascale

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Cirrascale is a provider of blade-based cloud computing and storage infrastructure for data centers.

EcoFlow

Clean Fund

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Clean Fund provides long-term financing for energy and water improvements to commercial properties.

EcoFlow

SoloPower

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SoloPower is a producer of thin-film photovoltaic cells and modules that help solar electricity generation.

EcoFlow

Domatic

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Domatic is Intelligent Power. We streamline wiring for smarter, more efficient buildings.

EcoFlow

Element 16 Technologies

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Improving industrial energy efficiency with thermal battery systems

EcoFlow

PG&E Corporation

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PG&E is an investor-owned electric utility with publicly traded stock that is headquartered in the Pacific Gas & Electric Building.

EcoFlow

iGlass Technology

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iGlass Technology has created “digital blinds” – durable film with digitally tunable light transmittance – retrofit Smart Windows.

EcoFlow

Chai Energy

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Chai is an energy education and technology development company that helps customers save energy in their homes.

EcoFlow

PV Evolution Labs

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PV Evolution Labs provides solar panel test and characterization services.

EcoFlow

Tour Engine

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Tour Engine develops simple and green internal combustion engines (ICEs) for use in transportation, industry, and electrical generation.

EcoFlow

Zenith Energy Ltd

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​​Zenith Energy is a Independent Power Producers.

EcoFlow

Maas Energy Holdings

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Maas Energy Holdings is a Dairy Digester Development, Financing, and Operations Company.

EcoFlow

kraftwerk Inc.

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Kraftwerk is a global leading company in the field of new materials and nanotechnology.

EcoFlow

Figtree Financing

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The Figtree OnDemandPACE Program provides PACE

EcoFlow

Blue Power Systems

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Adaptive Energy Generation and Storage System

EcoFlow

SuVolta

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SuVolta develops and licenses CMOS semiconductor technologies that reduce the power consumption of integrated circuits.

EcoFlow

Nexus eWater

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Nexus eWater is a home water recycling platform that develops solutions converting grey water for home water and energy use.

EcoFlow

Conectric Networks

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Hyper scalable wireless sensor networks for intelligent buildings

EcoFlow

Serious Energy

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Serious Energy sells, manufacturers and delivers acoustical and thermal solutions to the “built environment” through its iWindow brand.

EcoFlow

ImpactPPA

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ImpactPPA is a decentralized energy platform built to disrupt renewable energy finance and accelerate clean energy production.

EcoFlow

GreenMarbles

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GreenMarbles is an institutional integrator that specializs in home automation and energy management solutions.

EcoFlow

Aquarius Energy

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Aquarius Energy is a provider of clean technology and renewable energy solutions.

EcoFlow

Envizi

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Data and analytics to optimize buildings and business.

EcoFlow

Batteroo

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Batteroo is a thin sleeve that extends battery life significantly when placed over your battery

EcoFlow

Recurve

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Recurve develops software for contractors who audit homes to increase energy efficiency and perform construction services.

EcoFlow

Scoperta

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Scoperta develops amorphous alloys and metallic glasses designed to identify the disruptive material.

EcoFlow

V&R Energy Systems Research

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V&R Energy Systems Research specialize in Power Systems Reliability Analysis and Transmission System Optimization.

EcoFlow

Community Fuels

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Community Fuels is an advanced producer of biomass-based diesel fuels.

EcoFlow

My Open Road Corp.

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My Open Road is a mobile application that rewards users for using renewable energy and using public transportation.

EcoFlow

MoreSolar

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MoreSolar is a clean energy company that utilizes wind power as a novel method for cleaning solar panels.

EcoFlow

CoEfficient

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CoEfficient is a provider of specialized financial services intended for clean technology firms.

EcoFlow

EPS

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EPS Corp. provides energy efficiency software that provides accurate and measurable energy usage data for plant and executive management.

EcoFlow

NovaSolix

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NovaSolix develops an energy technology designed to generate a clean and low-cost form of energy.

EcoFlow

Heliotrope Technologies

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Heliotrope Technologies develops new materials and manufacturing processes for electrochromic devices.

EcoFlow

Quantum Energy Storage

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Quantum Energy Storage is a provider and manufacturer of electric utility services.

EcoFlow

Wind Harvest Pilot Project

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Wind Harvest Pilot Project is a subsidiary of Wind Harvest International.

EcoFlow

eMeter

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eMeter provides a portfolio of energy efficiency software and integration services.

EcoFlow

Partner Engineering & Science

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Partner is a national environmental and engineering consulting firm focusing on real estate due diligence, providing Phase.

EcoFlow

GreenTech Motors

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Beyond Energy Efficiency Electric Motors and Generators

EcoFlow

Caelux

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Caelux is a Scientific Research and Development Service company focusing on flexible solar cell design.

EcoFlow

PACE Funding Group

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PACEfunding group, an energy efficiency financing program, provides energy, water, and renewable energy projects for households.

EcoFlow

Juabar Design

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We envision a place for communities to interact with, learn about and create their own solar energy solutions.

EcoFlow

Hyve Solutions

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Hyve Solutions partners with you to collaboratively design and deploy energy-efficient rack-level server, storage and networking solutions.

EcoFlow

Propulsioneers

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Propulsioneers develops technology building blocks designed for autonomy and driven by software for maximum output and minimal footprint.

EcoFlow

Northshore

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Northshore is a data center service providers that maximize the profitability of infrastructure by enhancing energy efficiency.

EcoFlow

OneCharge

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Leading USA manufacturer of industrial Lithium batteries

EcoFlow

VECKTA

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VECKTA is a cloud-based market platform that delivers full turnkey microgrid design and implementation solutions.

EcoFlow

iWatt

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iWatt designs, develops, and manufactures power supply control integrated circuits.

EcoFlow

Spark Thermionics

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Spark Thermionics offers an energy-generation device that displaces conventional power production methods.

EcoFlow

QC Manufacturing, Inc.

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QC Manufacturing is the manufacturer of QuietCool, a revolutionary whole house fan.

EcoFlow

Simply Solar

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Clean Energy made Simple- We provide honest solar solutions to homes and business ensuring sound investments for our clients.

EcoFlow

Treeium Inc.

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Eco-friendly home remodeling company that uses eco-conscious, sustainable building practices to remodel your home and protect the planet.

EcoFlow

HNO International

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Hydrogen fuel cell company with emissions reduction solutions for internal combustion engines.

EcoFlow

Hearth Labs

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Hearth Labs is making sensors to better understand and control the built environment by measuring the missing half of thermal comfort.

EcoFlow

Artificial Muscle Inc.

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Artificial Muscle Inc. is a U.S.-based company that develops polymer components, which convert electrical energy into mechanical motion.

EcoFlow

Energy Internet Corporation

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Energy Internet Corporation unites engineering and hardware systems to produce efficient energy storage and renewable energy distribution.

EcoFlow

E&B Natural Resources

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E&B Natural Resources offers research, optimization and production of oil and gas, well maintaining, drilling, and other related services.

EcoFlow

TerraVerde Renewable Partners, LLC

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TerraVerde is an independent energy advisor representing school districts, public agencies, and commercial enterprises.

EcoFlow

Multigig

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Multigig is a fabless, high performance analog and mixed-signal semiconductor company.

EcoFlow

foris.io, inc.

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foris.io™ is a management system using data pertinent to calculate soil health for smart irrigation, fertilization, and better crop yield

EcoFlow

Power-One

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Power-One designs and manufactures energy-efficient power conversion and power management solutions, including inverters for

EcoFlow

Makani Power

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Makani Power is an Alameda, California-based company developing airborne wind turbines.

EcoFlow

Catalytic Solutions

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Catalytic Solutions manufactures emissions control systems and catalytic products for commercial and industrial applications.

EcoFlow

Ambient Photonics

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The world’s most powerful low light energy harvesting PV cells for smart home, consumer electronics and IoT devices

EcoFlow

Cogenra Solar

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Privately held solar energy company

EcoFlow

San Francisco Public Utilities Commission

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It is a department of the City and County of San Francisco that provides retail drinking water and wastewater services.

Written by Mark Smith

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