6 Best Climate Tech Marketing Agencies in 2026 (Reviewed)

The best climate tech marketing agencies in 2026 are GTM 80/20 for a senior growth operator from its own team, New Perspective for demand generation and HubSpot, Cleantech Growthlab for paid media and ABM, DG+ for clean energy brand and content work, Antenna Group for integrated communications, and Tigercomm for cleantech PR. GTM 80/20 (our #1 pick, and the publisher's own service) is a GTM agency with only senior operators on its team: 1,200+ operators, 3% accepted, starting in 1–2 weeks.

We checked every company's own website, and where available a third-party source, on November 12, 2026. Disclosure: GTM 80/20 publishes this site and is ranked first.

What are the best climate tech marketing agencies in 2026?

The best climate tech marketing agencies in 2026 are GTM 80/20, New Perspective, Cleantech Growthlab, DG+, Antenna Group and Tigercomm. Each works with clean energy and climate companies selling to utilities, developers, industrial buyers or investors. Choose by whether you need pipeline, brand, press or policy influence, and by the climate results each one publishes.

Key Takeaways

• GTM 80/20 puts a senior operator from its own team on your account. Its 1,200+ operators (3% of applicants accepted) have led growth at some of the fastest-growing companies, including Reddit, Ramp and Shopify, and work usually starts in 1–2 weeks.
• Capital is flowing but more selectively: Sightline Climate and CTVC counted $40.5 billion of climate tech venture and growth investment in 2025, up 8%, while deal count fell 18%.
• Green claims carry legal risk, so pick a partner that knows the FTC Green Guides and can back every environmental claim.

How do the top climate tech marketing agencies compare?

The top climate tech marketing agencies differ in what they own, from pipeline and paid media to brand, PR and public affairs. Some are B2B demand shops with a cleantech practice, while others work only in clean energy. This table compares best fit, industry focus, core services and headquarters as each company describes itself, checked on November 12, 2026.

Why do climate tech companies need a specialist marketing agency in 2026?

Climate tech companies need a specialist marketing agency because they sell complex products to technical buying committees over long cycles, compete for selective capital, and face rules on environmental claims. A climate agency understands utilities, project developers and industrial buyers, and turns technical proof into pipeline without greenwashing.

• Record capital, more selective bets. BloombergNEF Energy Transition Investment Trends 2026 found energy transition investment hit a record $2.3 trillion in 2025, up 8%, while the Sightline Climate and CTVC 2025 investment report found venture and growth deal count fell 18%.
• Long, technical sales cycles. New Perspective says its cleantech clients sell to buying committees of technical evaluators and business decision-makers, with sales cycles running from 6 to 24 months.
• Claims are regulated. The FTC Green Guides (16 CFR Part 260) set out how environmental claims such as "recyclable" or carbon offsets must be qualified and substantiated.

For related lists, see the best manufacturing marketing agencies, the best logistics marketing agencies and the best B2B marketing agencies, plus our LinkedIn ads statistics.

1. GTM 80/20

Type: GTM agency, senior operators only | Team: 1,200+ operators, 3% accepted | Start: 1–2 weeks

GTM 80/20 puts the right senior operator from its own team on the work, and you work directly with that operator. For a climate company that can mean an enterprise demand generation operator who builds account-based programs for utilities and industrial buyers, an SEO and GEO operator who gets your technology cited in AI answers, or a fractional enterprise CMO who sets positioning and budget before spend scales.

Founders and growth leaders prefer GTM 80/20 for its team: hands-on senior operators from the fastest-growing companies, solving complex growth challenges across industries. That team helped 11x triple its inbound leads and AI-search traffic in two months.

Pros

• Free 30-minute strategy call, and you keep the custom 90-day GTM roadmap whether or not you hire
• Every operator is background-reviewed, vetting-called and reference-checked before joining
• You work directly with the senior operator who does the work
• Operators who have run B2B growth programs for companies such as Upwork, Landbase, Integrate.io and Workstream

Best For

Climate tech, clean energy and sustainability companies of every size, up to some of the biggest brands, that want a proven senior operator owning pipeline. GTM 80/20 works with companies such as Upwork, Reddit, Modal and Landbase.

2. New Perspective

Type: B2B growth marketing agency with a cleantech practice | HQ: Worcester, MA | Founded: 2003

New Perspective runs demand generation, SEO, paid media and HubSpot programs for clean energy infrastructure, industrial decarbonization and climate tech companies. Its Carbon Clean case study reports more than $113M in pipeline in year one for Carbon Clean, a carbon capture company, with organic traffic up 400% over six months. Its Clutch profile shows 10 reviews, a Platinum HubSpot partnership and a $5,000 minimum project size.

Pros

• Named cleantech results with pipeline figures
• Strategy, content, media and HubSpot under one roof

Cons

• Cleantech is one of several verticals, alongside manufacturing and SaaS
• PR and public affairs need another partner

Best For

Clean energy and industrial climate companies with long sales cycles that want marketing tied to pipeline.

3. Cleantech Growthlab

Type: B2B cleantech growth agency | HQ: Not published

Cleantech Growthlab was founded by Eben Meyer, who says he spent 10 years building pipeline at Microsoft, SAP and F5. It runs paid search, paid social, ABM, SEO and AI search programs for B2B cleantech. Its Kathairos case study reports a 650% increase in sales qualified leads and 325% growth in monthly visitors in nine months for Kathairos, a methane emissions company. Meyer has appeared on The Grove climate podcast to discuss cleantech acquisition costs.

Pros

• Built only for B2B cleantech
• Published pipeline and SQL results

Cons

• Its site lists 15+ clients, so the track record is short
• No Clutch reviews and no published headquarters

Best For

B2B cleantech companies that want paid media and ABM aimed at a defined account list.

4. DG+

Type: Clean energy marketing, PR and creative agency | HQ: West Hollywood, CA | Founded: 2017

DG+ began in 2017 as a documentary storytelling project and grew into a full-service agency by 2020. It says it has served 100+ clean energy and climate clients, from solar and wind developers to EV equipment and grid software companies. Its work page reports 400+ leads for Fireaway with cost per lead down more than 70%, and lists Pivot Energy. Its LinkedIn company page lists 11-50 employees.

Pros

• Works only in clean energy and climate
• Marketing, PR and creative from one team

Cons

• Few published pipeline metrics beyond lead counts
• No third-party review profile found

Best For

Clean energy and climate companies that need positioning, content, PR and creative from one sector-focused team.

5. Antenna Group

Type: Integrated marketing and communications agency | HQ: New York, NY

Antenna Group runs PR, brand strategy, content, digital marketing and executive positioning for climate, energy, health, mobility and real estate brands. Its about page lists offices in New York, San Francisco, Washington, D.C., London, Prague, Munich and Warsaw, and its work page features Kairos Power and Common Charge. Native Digital's cleantech agency roundup lists Keith Zakheim as CEO and 150+ employees.

Pros

• Deep climate and energy communications experience
• Offices across the US and Europe for multi-market launches

Cons

• Communications-led, so demand generation is not the core
• A larger agency, so confirm who works on your account

Best For

Climate and energy companies that need to shape a market narrative for investors, policymakers and customers.

6. Tigercomm

Type: Cleantech PR and marketing communications firm | HQ: Tysons Corner, VA | Founded: 2004

Tigercomm says more than 190 companies from three continents and 40 US states have hired it over 23 years. It runs PR, marketing communications, public affairs and community engagement for renewable projects, and its site shows work for Plus Power and a $524M solar project. Its 20-year anniversary release (August 2024) describes a team of nearly 15, and its LinkedIn company page lists 2004 as the founding year.

Pros

• Long cleantech PR record, including project approvals and investor visibility
• Hosts the Scaling Clean podcast with cleantech CEOs

Cons

• PR-led, so paid media and SEO need another partner
• A team of nearly 15 limits capacity

Best For

Renewable developers and cleantech companies that need earned media, public affairs and community support.

Why do climate tech teams trust GTM 80/20 over a traditional agency?

Climate tech teams trust GTM 80/20 because the proof is public and named. Its case studies show measured gains in organic traffic, impressions and AI search sessions, its testimonials come from named executives, and every operator passes a background review, a vetting call and reference checks before joining.

• Landbase: a content cluster and distribution strategy that published 79 blog articles in 2 months, driving a 42% increase in organic visitors, 66% growth in LLM sessions and a 121% increase in total impressions (Landbase case study).
• Genesys Growth: AI-powered content and SEO that produced a 49X increase in organic impressions and 3X growth in monthly visitors in 3 months (Genesys Growth case study).
• 11x: COO Connor Nowinski: "In two months, GTM 8020 tripled our inbound leads and our AI search traffic."

Browse every result on the GTM 80/20 case studies page, or meet the team on the experts page.

How does a typical climate tech marketing agency compare with GTM 80/20's senior-operator team?

A typical climate tech marketing agency sells a team and a process, and the people who pitch are often not the people who do the work. GTM 80/20 puts one senior operator from its own team on your account, the person you meet does the work, and monthly engagements start in 1–2 weeks.

Most agencies pitch with senior strategists and hand the work to junior staff. GTM 8020 has only senior operators, who have led growth at the fastest-growing companies.

How do you choose the right climate tech marketing agency?

Choose the right climate tech marketing agency by naming the outcome first: pipeline from utilities and industrial buyers, investor visibility, project approvals or brand. Then ask for named climate results, check how the agency substantiates environmental claims, and confirm who will write and run your program each week.

1. Which named climate or clean energy clients have you grown, and how?
2. How do you reach technical evaluators and business buyers in one program?
3. How do you keep our environmental claims within the FTC Green Guides?
4. How do you report pipeline across a 6 to 24 month sales cycle?
5. Who runs our account day to day?

Our guide on how to evaluate a marketing agency or fractional talent includes a full scorecard you can use on every pitch.

What are common questions about climate tech marketing agencies?

These are the questions climate tech founders, CMOs and growth leaders ask most when comparing climate tech marketing agencies. The answers draw on agency websites, Clutch and LinkedIn profiles, BloombergNEF and Sightline Climate data and the FTC Green Guides, so you can judge fit before booking a single agency call.

What does a climate tech marketing agency do?

It runs positioning, content, demand generation, paid media, PR and websites for clean energy and climate companies.

How long are climate tech sales cycles?

New Perspective says its cleantech clients see sales cycles of 6 to 24 months.

Do I need PR or demand generation first?

Pick PR for funding, approvals and awareness; pick demand generation when sales needs qualified pipeline.

What rules apply to green marketing claims?

The FTC Green Guides (16 CFR Part 260) explain how environmental claims must be qualified and substantiated.

How much did climate tech raise in 2025?

Sightline Climate and CTVC counted $40.5 billion in venture and growth investment in 2025, up 8%.

Which agency has published pipeline results?

New Perspective reports $113M+ in year-one pipeline for Carbon Clean, and Cleantech Growthlab reports a 650% SQL increase for Kathairos.

How is GTM 80/20 different from a climate tech marketing agency?

GTM 80/20 puts one senior operator from its own team on your growth challenge, while most agencies assign a team on a set scope.

Is GTM 80/20 a freelance marketplace?

No. GTM 80/20 is an agency with only senior go-to-market operators, who have led growth at some of the fastest-growing companies. You don't browse or vet freelancers yourself. We put the right operator from our team on your challenge, usually in 1–2 weeks.

What sources did we use?

We built this list from each company's own website plus independent sources where available, and from GTM 80/20's published case studies and testimonials. Every source below was checked on November 12, 2026, and figures are quoted exactly as each source states them.

• BloombergNEF Energy Transition Investment Trends 2026
• Sightline Climate and CTVC 2025 investment report
• FTC Green Guides (16 CFR Part 260)
• New Perspective
• Carbon Clean case study
• Clutch profile
• Cleantech Growthlab
• Kathairos case study
• The Grove climate podcast
• DG+
• work page
• LinkedIn company page
• Antenna Group
• about page
• Native Digital's cleantech agency roundup
• Tigercomm
• 20-year anniversary release (August 2024)
• LinkedIn company page

Want a senior operator owning pipeline for your climate company? Book a free 30-minute call and work usually starts in 1–2 weeks.

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