Eco Enthusiasts
TreeHugger.com
Links, Ideas and Conversation from the TreeHugger hive mind, the latest in modern green.168,212 followers | Follow
National Wildlife
National Wildlife Federation works to inspire Americans to protect wildlife for our children's future. Staff updating: @starfocus @rarewildlifeguy @ksuzj88,534 followers | Follow
Viking Services
Everything related to alternative energy, solar, wind and geothermal81,199 followers | Follow
SolarFeeds
Official SolarFeeds Account. We have 370+ contributors covering solar news, gadgets, and stocks. We also love electric vehicles and smart grids75,665 followers | Follow
Green Moms Carnival
A group of green women bloggers, uniting our voices to help preserve and protect Mother Earth for future generations. WINNER 2008 SHORTY AWARD!72,893 followers | Follow
General Motors
Bringing GM information to Twitter one Tweet at a time. Mary (MH), Rebecca (RH), Pete (PT) & Michael (MS).56,496 followers | Follow
Jerry James Stone
Love food, wine and cars! 2012 @ShortyAwards winner in #green. @ClineCellars Chef. Byline at @Discovery, @TreeHugger. Tweets are green, geeky or just plain odd.46,730 followers | Follow
Sierra Magazine
Environmental news, lifestyle tips, and free-ranging opinion from the editors of Sierra magazine. Our mission: Explore, enjoy, and protect the planet.37,922 followers | Follow
The Boeing Company
Boeing has a tradition of aerospace leadership and innovation, and is committed to investing in the communities where our people work and live worldwide.36,880 followers | Follow
T.E. Pelton
Tara, researcher, writer, marketing strategist, Author of Marketing from the ♡. Green, global sustainability,34,113 followers | Follow
Kate Sheppard
Reporter at Mother Jones covering energy, environment, reproductive rights, etc. Contributor with Current's Countdown. Also like: running, bikes, books.29,009 followers | Follow
Marcal Small Steps
I'm CST, Marcal's Social Media dude. I'm here to give you bits of Marcal information, in under 140 characters.27,161 followers | Follow
Green For All
Green For All is a national organization working to build an inclusive green economy strong enough to lift people out of poverty.25,899 followers | Follow
Green Progress
The latest green technology and environmental science news.25,609 followers | Follow
Philippe Cousteau
Social entrepeneur, TV Host, CNN special correspondent, explorer, member of legendary family and CEO of EarthEcho International and Azure Worldwide.21,556 followers | Follow
IBMResearch
This is the official Twitter ID of IBM Research. The account is managed by Chris Sciacca and Chris Nay, and follows the IBM Social Computing Guidelines.21,478 followers | Follow
Greentech Media Inc.
Your source for news, research and analysis in the greentech business-to-business market. Visit our website and GTMResearch.com for more information.20,953 followers | Follow
US EPA Research
Office of Research & Development (ORD) is the scientific research arm of the US EPA.18,850 followers | Follow
Renewable EnergyNews
Renewable Energy News & Information - add your business FREE to our new directory: http://www.renewable-energy-news.co.uk/business-directory/18,273 followers | Follow
ENERGY STAR
ENERGY STAR is a joint program of the US EPA and US DOE helping us all save energy and protect the environment.17,382 followers | Follow
American Wind Energy
AWEA is the voice of wind energy in the U.S., promoting renewable energy to power a cleaner, stronger America. On Facebook: http://www.tinyurl.com/AWEAFacebook17,107 followers | Follow
U.S. EPA Water
The Environmental Protection Agency's Office of Water- working for clean water for all Americans16,814 followers | Follow
The Energy Collectiv
The world's best thinkers on energy and climate issues. Register for newsletter, webinar access and ebooks. http://ow.ly/4Rr1m15,790 followers | Follow
HomeEnergySaver PRO
Help customers save $$ on their energy bills! Join our community for Home Energy Pros: http://homeenergypros.lbl.gov15,531 followers | Follow
Joel Makower
Founder of GreenBiz.com; bestselling author; speaker, entrepreneur in green business, green marketing, clean tech, blah blah blah13,594 followers | Follow
Green Building News
The official Green Building News tweet. Follow sister tweets @CorrectionsNews @SchoolBuildNews @HCONews12,795 followers | Follow
Marc Gunther
writer and speaker on business and sustainability, contributing editor at FORTUNE, senior writer at GreenBiz.com12,482 followers | Follow
Calestous Juma
Professor @Harvard @Kennedy_School interested in science, technology and innovation for development. To follow is a privilege; to be followed is an honor.12,290 followers | Follow
Greenology
Greenology is the world's largest green social network, and the first to introduce Interactive Reality technology on it's web site: GreenologyMag.com12,019 followers | Follow
Sam Brenner
11,414 followers | Follow
dusty gedge
biodiversity professional, green roof campaigner/designer,public speaker, ecosystems services and green roof trainer - indigenous people + justice11,210 followers | Follow
David Collier
Tilles focuses on sustainability, social responsiblity and the culture of giving back. David Collier founded and leads Tilles.11,134 followers | Follow
Green Building Pro
Social media community for green building professionals.11,053 followers | Follow
Wind Power & Energy
Wind Power - Wind Energy - Wind Electric: Generated by wind turbines - clean, green, energy efficient and renewable. Tweeting developments and my wind spin ..10,931 followers | Follow
Events Calendar
Information about green & sustainable events, festivals fairs & expos. Green calendar of events. Follow on Facebook http://sn.im/ouk7810,630 followers | Follow
Cleaner USA
Innovative Solar, Wind & Energy, Earth Matters, Green Planet & Our Growing Business Nutritional Wellness Gourmet Coffee & Tea http://www.myganocafe.com/SoGood10,510 followers | Follow
Rutgers University
Rutgers, The State University of New Jersey, is a leading public research university. Follow us for all things Rutgers.8,906 followers | Follow
UT Built Environment
The Twitter community for @theurbantimes' built environment section.8,773 followers | Follow
Cleantech Group
Cleantech Group provides executives with insight into innovation and convene the industry's leading executive conferences held annually around the world.8,639 followers | Follow
Columbia Univ Press
Publisher of a wide range of books in the humanities, sciences, and business.7,834 followers | Follow
Architecture 2030
Rapidly transforming the Building Sector to address challenges of climate change, energy consumption and the economy.7,780 followers | Follow
Elaine Hsieh
Global business strategist and former green building geek. Focused on energy, sustainability, and innovation.7,545 followers | Follow
Henricus Peters
Making conservation connections - about children & Nature, Environmental Education, Playoutdoors and Sustainability. Also at @NAEE_UK. Fuller discussions at7,437 followers | Follow
Philip Richards
I'm a botanic who enjoy simple pleasures of life, worried about what we can do for our planet!7,436 followers | Follow
Michael Edwards
I am the Editor-in-Chief of Organic Lifestyle Magazine and Green Lifestyle Magazine, both available at greenmagazines.com7,242 followers | Follow
Renewable Energy TV
The latest in solar, alternative and renewable energy videos6,968 followers | Follow
Do Your Part
Providing practical, everyday green living solutions that help you create healthier homes and a healthier planet.6,964 followers | Follow
Marc Eisenman
“Finally, An Auto Club With Genuinely Decent Values!” - NPR’s Car Talk6,762 followers | Follow
Proud Green Home
www.ProudGreenHome.com is about green home building, remodeling, energy efficiency, appliances and sustainable living.6,697 followers | Follow
Mark Johnson FAIA
FAIA|AIBD|CKD Marketer/Educator/Architect/Speaker - Design+building products industry. Green Builder Media - National Director, Social & Virtual Media6,468 followers | Follow
Verizon Business
Your official Twitter source for the latest IT, cloud, mobility, security and advanced communications enterprise news from Verizon.6,085 followers | Follow
The Earth Times
The Earth Times covers environmental news topics and environmental issues. Visit us at www.facebook.com/TheEarthTimes5,950 followers | Follow
Sustainable Urbanism
Walkable, transit-served urbanism integrated with high performance buildings and infrastructure.5,941 followers | Follow
China Solar Stocks
Solar sun energy, China, Chinese, PV, power, renewable, thermal, radioactive, photovoltaic, distributors, dealers, bio diesel, jatropha, biomass, stocks, green.5,849 followers | Follow
I love me green
To Inspire, Build Awareness and Encourage Environmental Change!5,123 followers | Follow
GE Global Research
The latest in technology, innovation, science, and engineering straight from the technologists themselves at GE Global Research. www.ge.com/research4,941 followers | Follow
Eaton Corporation
Diversified power management company and global technology leader in electrical systems for power quality, distribution and control.4,653 followers | Follow
Carrie Bancroft
greenREACH, a sustainable management consulting company, has closed its doors. You can connect with Carrie at @withinsight_llc.4,643 followers | Follow
World Landscape Arch
World Landscape Architecture webzine | landscape architecture projects, news, competitions and events4,616 followers | Follow
Friends of the Earth
Friends of the Earth International is the world's largest grassroots environmental network. We campaign on today's most urgent environmental and social issues.4,579 followers | Follow
EarthAdapt
[Earth] Planet we live on [Adapt] Conform 2 new conditions, sometimes 4 survival Adapt 2 climate change via smart design, green living & changing our world4,390 followers | Follow
LEEDuser.com
LEEDuser brings you the knowledge and experience of professionals who spend their days guiding project teams through the LEED rating systems.4,239 followers | Follow
BSC Solar, LLC
Solar Power Integrator focused on the development of utility-scale solar farms and on-site, commercial-scale roof, ground and parking lot solar system solutions4,171 followers | Follow
UBC Sustainability
Sustainability at the University of British Columbia - integrating teaching, research and operations.3,820 followers | Follow
Emi Yoshikawa
シリコンバレーのクリーンテックベンチャー勤務。東京・NY・SFにて金融業界で修行・CFA取得後ハーバードビジネススクールを経て現在に至る。中国系アメリカ人の夫とパグ愛犬ノブオの三人家族。グローバルラーメンネットワーク（GRN）立ち上げ中。3,796 followers | Follow
Jeremy McNamara
Renewable Energy: Solar, Wind, Algae, Biomass - Whatever! Who wants to build a fuel cell? How about a Methane Burner? Maybe a Wood Gasifier?3,694 followers | Follow
Sandy Guerriere
Green Eco Communities - Sustainability of the Planet begins at home. ~ Become the change you want to see in the world.3,603 followers | Follow
Josh Maxwell
Travel, Blogging, Alternative Energy activist who drives hummer... just kidding3,268 followers | Follow
GREENGUARD
The GREENGUARD Environmental Institute aims to protect human health by improving indoor air quality and reducing people's exposure to chemicals.3,191 followers | Follow
Green Harmony HomeWP
Design of Superior, Green Energy-Efficient Homes, Renewing&Remodeling, Tips &References, Solar Heating,Solar Water Pumping Installation Guides, Best Green News3,172 followers | Follow
GreenExpo365.com
The green building industry's online community, education platform (free webinars!), virtual trade show, and green building resource center.3,143 followers | Follow
CEI Architecture
We do architecture for recreation, healthcare, cultural, community, education, transportation and commercial projects. Also wineries. We love wineries.2,638 followers | Follow
Olav Kjorven
Assistant Secretary General for development policy, UNDP. Co-chair for the UN's post-2015 work: What kind of world do we want to live in?2,492 followers | Follow
Energy Vanguard
by EV prez @AllisonBailes. We write on bldg science & energy efficiency in plain English. We train energy auditors. We design homes & HVAC for high performance.2,426 followers | Follow
BC SustainableEnergy
BC Sustainable Energy Association: Empowering British Columbians to build a clean, renewable energy future: bcsea.org2,381 followers | Follow
Environment Guru
Your World, Your Voice; Spreading environmental awareness by providing the latest topics, information, jobs, bids, and more. Then translating it to the World.2,338 followers | Follow
Andrew Restuccia
I cover energy and the environment for The Hill. Retweets are not endorsements. arestuccia@thehill.com2,305 followers | Follow
Micah Jason
New Dad, NYC Native, Venture Asst, currently helping #startups grow @ NYU-Poly inc. + NYC Accelerator 4 a Clean + Renewable Economy (NYC ACRE)2,225 followers | Follow
Home Solar CalFinder
Home solar power is finally having its day in the sun. We're the CalFinder team, tweeting the greener (and especially solar) lifestyle.2,176 followers | Follow
N-Viro International
Alternative energy from biomass-derived bioorganics. Patented process technology designed for sustainable reuse.2,053 followers | Follow
Pushing Green
The focus of www.pushinggreen.com is to provide the average consumer the products, services and information necessary to make their household more green.1,955 followers | Follow
Swinerton Inc.
The Swinerton Family of Companies provides commercial construction services throughout the Western United States.1,921 followers | Follow
LivingHomes
Modern, sustainably designed, prefabricated homes that are comfy, conscious, complete.1,796 followers | Follow
Chuck Wolfe
Environmental, Land Use, Property and Redevelopment Lawyer, Affiliate Faculty at the University of Washington, Writer and founder of myurbanist1,734 followers | Follow
Trend Hunter Eco
TrendHunter.com eco trends from @trendhunter's archive of environmental trends, sustainable designs, and green initiatives.1,703 followers | Follow
Live Thrive
Live Thrive, an Atlanta based 501(c)3,empowers people,organizations,communities and businesses to make positive,healthy & sustainable changes to the environment1,653 followers | Follow
LindaLongo
Lighting trend expert & product matchmaker + global interior design show warrior, editorial director of enLIGHTenment magazine1,624 followers | Follow
PlanetReuse
PlanetReuse is a reclaimed material brokering service for architects, owners and contractors all over the world!1,616 followers | Follow
sean green
Tired of Spending thousands of dollars paying electricity bills. Make your own solar panels and save $$$$!! CLICK THE LINK BELOW1,566 followers | Follow
Promote Buffalo Now
Following Businesses and Groups in WNY --- Tweet us your updates and promotions; we'll spread the love!1,560 followers | Follow
Global Energy Times
Global Energy Times | Top Energy News Stories from around the World1,508 followers | Follow
PreservationTV
Broadcasting the Built Environment | Managed & Moderated by Historic Preservation Network | Post Office Box 20084 London Terrace Station | New York, NY 100111,441 followers | Follow
CAENVIRONMENT
1,303 followers | Follow
Honey Berk
Freelance Writer, Marketing & Sustainability Consultant, Web Designer/Developer1,281 followers | Follow
ThinkGreenLiveClean
This environmental website has been designed for people on the go!1,268 followers | Follow
Jerry Yudelson
Green Speaker, Green Building Consulting firm president, Sustainability Consultant and Author of 12 Green Building Books, incl. Dry Run re: water conservation.1,260 followers | Follow
Sunmaxx Solar
Leading vertically integrated manufacturer and distributor of Solar Hot Water Systems. http://www.facebook.com/sunmaxxsolarpage1,241 followers | Follow
Green Homes
Learn how to make your home Energy Efficient, reduce your energy consumption and significantly contribute to improving the environment.1,227 followers | Follow
Solar Power
You can cut or eliminate your energy bills by using solar power and other forms of renewable energy. Find DIY resources to use solar power energy in your home1,174 followers | Follow
Ideate Inc
Architects, engineers & construction pros realize their vision with Ideate & Autodesk software, training & support.1,121 followers | Follow
Solar Wind Green
Passionate about the environment: renewable energies, solar, wind, water, biomass, compassion ...1,083 followers | Follow
SmartGrids
Professional Distribution Engineer interested in Utility Distribution Automation, AMI, Smart Grid, Demand Response, Distributed Gen, Solar & Wind, EV Tech1,061 followers | Follow
ecopolitology
Tweeting about energy and environmental politics. This account is mostly our own content with an occasional retweet. For more curation see @ecopolitologist.1,049 followers | Follow
AYTON Clean Energy
We provide turn-key stand-alone wind and solar energy PV systems1,048 followers | Follow
Enginuity Energy LLC
Using its advanced Ecoremedy™ gasification technology, Enginuity Energy is removing the historical barriers of biomass energy and advancing the industry1,040 followers | Follow
CDC Long Island
CDC of Long Island is a not-for-profit that helps create financially stable communities through housing, small business, energy efficiency & home improvements.980 followers | Follow
Bright Power, Inc.
An energy efficiency and renewable energy consulting firm. Services include energy benchmarking (@energyscorecard & @nycbenchmark), energy audits, RE, LEED.941 followers | Follow
SustBottomLine-Keira
Macro-global-thinker/Free radical futurist agent/360° Sustainability/Social Media 4+Change/Op-src Society/Goldbug/Worksnugger/Big Data Freak/Bridgebuilder863 followers | Follow
Sustainable Cornell
News on the many sustainability initiatives happening at Cornell University in Ithaca, NY.788 followers | Follow
Digital Energy
The official Twitter of GE Energy's Digital Energy business. We provide Real.Smart.Solutions for modernizing the grid. Our commitment is called GridIQ.787 followers | Follow
Digital Lumens
Digital Lumens is hard at work on industrial lighting innovations that integrate LEDs into a smart system to reduce customers' lighting energy use up to 90%.778 followers | Follow
Andrew Michler
Writer : consultant : reactant for environmentally responsible building @Inhabitat : @RMPassiveHouse : @eVoloMagazine767 followers | Follow
Zero to Landfill
Your waste diversion partner. ISO, continual improvement, innovation, Lean, workforce engagement, IDEA - what's that?718 followers | Follow
Anthony Austin
Outdoor enthusiast, small business owner, lover of life, internet entrepreneur, Daddy to my beautiful little girl708 followers | Follow
Urban Review
If you have story worth to share, go to http://urban-review.com/share-your-story-with-urban-review-com/ and submit it. Make sure it is YOUR story.577 followers | Follow
JobsinWindPower
Jobs in Wind Power is dedicated to connecting wind energy companies with people who want to apply their skills toward helping the planet.571 followers | Follow
Kartikeya Singh
Climate and energy interested social entrepreneur, researcher and diplomat in training.546 followers | Follow
Don McDonnell
CEO of McDonnell Group, Inc., Tweet about Energy. Moderator of 4,000+ member smart grid executive forum. Christian, husband of Charlotte, dad of 3.521 followers | Follow
Shannon Haltiwanger
Historic Preservationist and Urban Enthusiast who has memories of being a designer that loves to travel and save places that matter478 followers | Follow
ConEdison Solutions
competitive #electricity supply, #green power, #sustainability services for business, homes, government and schools476 followers | Follow
chocolate granola
chocolate granola promotes just, sustainable, green living. http://www.chocolategranola.com470 followers | Follow
Wind Analytics
Wind Analytics helps home and business owners harvest their wind energy and save on their utility bills385 followers | Follow
Bill Landel
I have studied Environmental Science at several schools and currently devote all of my free time to getting people to be GREEN! Love thy planet!358 followers | Follow
LPP Experiment
We are conducting a scientific feasibility investigation of dense plasma focus (DPF) fusion, w/ proton-boron (pB11) fuel, an approach we call Focus Fusion.294 followers | Follow
John Columbus
External Comms for Verizon and ICSA Labs. Sharing my own views on healthcare, security, green and other Verizon news278 followers | Follow
LEED Homes Committee
Non-profit providing resources and education for residential green building237 followers | Follow
LuxEco Living
LuxEco Living is an online magazine,to help each other learn how to navigate through the Green (R)evolution to attain vibrant inner and collective health.210 followers | Follow
GreenPress
Green Press adalah perkumpulan jurnalis lingkungan http://greenpressnetwork.blogspot.com/ Situs Beritalingkungan.com www.beritalingkungan.com185 followers | Follow
David Gilford
(Follow me @dgilford for more tweets.) Thoughts & news on our energy future from (NY-centric) cleantech advocate at intersection of technology, finance & policy166 followers | Follow
AFCO Systems
Data center enclosure systems featuring advanced active airflow management for cooling efficiencies. Gain control and lower TCO for your data center.157 followers | Follow
Rebecca Lutzy
Ecopragmatic PhD-er at Princeton, climate and energy politics; Featured Blogger at The Energy Collective141 followers | Follow
A Splash of Green
We are a Green supply company helping build healthy homes in a Modern World!129 followers | Follow
Evergreen Sessions
Find environmentally-friendly surf gear. We help you enjoy the outdoors without destroying the outdoors. Founder Mike Caruso (@mason13a) tweets here.111 followers | Follow
Vanguard EP, LLC
Vanguard Energy Partners, LLC designs, integrates, installs and maintains commercial solar photovoltaic (PV) energy systems.107 followers | Follow
A Little Bit Green
Trying to make the world a greener place, one little thing at a time.65 followers | Follow
Unwanted Name
44 followers | Follow
