Renewable energy products are technically complex, and that complexity is usually where the compelling sales pitch sits. An energy storage system's value comes from specifics like response time, cycle life, and how it behaves under partial load. An energy generation technology's value comes from its efficiency curve, or how it performs against a specific resource.
Specialist cleantech marketing agencies understand this in a way most generalist firms don't. Experienced energy marketers bring the background context needed to understand the technology, uncover what's genuinely different or exciting about it, and turn that difference into a compelling marketing story or campaign.
This guide reviews six marketing agencies with proven experience across cleantech, renewable energy, advanced materials, circular economy, and industrial decarbonization.
Agencies were evaluated based on public evidence of sector work, breadth of marketing capabilities, experience communicating technical products, and suitability for B2B companies marketing to enterprise buyers, utilities, investors, channel partners, and other specialized audiences.
The Best Cleantech Marketing Agencies at a Glance
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Agency |
Primary Strength |
Best Fit |
|
1. twentytwo & brand |
Full-service cleantech marketing, PR, branding, creative, digital, and lead generation |
B2B cleantech and renewable energy companies looking to increase brand visibility, enhance their brand, generate leads, or establish thought leadership with one experienced partner. |
|
2. Ironpaper |
B2B demand generation and sales-aligned digital marketing |
Energy and technology companies focused on pipeline and buyer engagement |
|
3. Velo B2B |
B2B brand, ABM, demand generation, and sales enablement |
Technical companies selling into complex buying groups |
|
4. Criterion Global |
Paid media, international market expansion, and B2B media strategy |
Established climate and energy companies with substantial media programs |
|
5. Hawthorn Advisors |
Corporate communications, stakeholder engagement, and sustainability counsel |
Companies navigating reputation, policy, investor, and corporate communications |
|
6. Manasian & Co |
Brand strategy and communication of complex propositions |
Energy companies needing positioning, brand development, or sales communication |
How We Selected the Agencies
The term “cleantech marketing agency” covers very different capabilities. A company preparing for a North American market launch may need positioning, PR, creative, digital advertising, website development, and sales collateral at the same time. Another may already have those foundations and need only demand generation or paid media.
For that reason, this list does not rank agencies simply by size or visibility. Each agency was considered against four practical criteria:
Public cleantech or energy evidence. Agencies needed identifiable work in renewable energy, energy transition, energy technology, or a closely related technical market.
B2B capabilities. Priority was given to firms equipped for long sales cycles, complex buying committees, enterprise procurement, channel relationships, or other B2B stakeholder environments.
Relevant marketing depth. The list considers positioning, communications, branding, demand generation, digital marketing, paid media, content, and sales enablement rather than treating marketing as a single discipline.
Evidence beyond agency claims. Named clients, case studies, dedicated sector pages, published work, or measurable results were prioritized wherever available.
1. twentytwo & brand
Best for: Full-service B2B cleantech and renewable energy marketing
twentytwo & brand is the strongest overall option on this list for cleantech and renewable energy companies that want one integrated marketing partner who can grow with them and adapt based on their needs.
The agency operates exclusively within the cleantech, renewable energy, and sustainability sectors . The team specializes in brand strategy and creative, public relations and media storytelling, social media marketing and advertising, SEO and AI visibility, website design and development, and lead generation campaigns.
That breadth is particularly relevant for growth-stage climate tech companies with lean marketing teams. A technical company entering a new market may need to establish its messaging, create a more mature brand image, announce and promote important initial milestones, prepare executives for media engagement, and launch paid growth campaigns at the same time and with minimal resources. . Working with a single agency partner, rather than coordinating across multiple vendors, saves significant time and reduces cost.
twentytwo & brand deliberately brings communications strategy, brand design, PR and media relations, digital marketing, search visibility, and lead generation together, in-house.
As a leading cleantech marketing agency, the company helps renewable energy and climate technology businesses translate complex innovations into clear market messages, strengthen visibility, and build meaningful stakeholder engagement.
Core Capabilities
Its services include:
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Brand and communications strategy
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Visual branding
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Brand messaging
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Creative and graphic design
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PR and media relations
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Thought leadership
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Social media management
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Website design and development
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SEO and GEO (AI search)
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Advertising and lead generation
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Content development
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Integrated market-entry campaigns
The agency reports having worked with more than 100 cleantech and renewable energy brands and has received Inc. 5000 recognition for three consecutive years. The agency has also been recognized with a w3 Gold Award for Social Content & Marketing in the Environment and Sustainability category, and as a top B2B Marketing Agency in 2026 by PR Daily.
Notable named engagements include GameChange Energy, where twentytwo & brand drove a 50% year-over-year increase in media coverage; Burnham RNG, which achieved 70% year-over-year growth in LinkedIn followers; and esVolta, which saw a 900% increase in website impressions after partnering with twentytwo & brand.
Why It Ranks First
Several agencies on this list are strong in specific disciplines. Ironpaper has substantial B2B demand-generation capabilities. Criterion Global is particularly relevant for sophisticated paid media programs. Hawthorn brings corporate and stakeholder communications experience.
twentytwo & brand stands apart because these capabilities do not sit at the edge of a broader industry portfolio. Cleantech and renewable energy are the agency’s operating environment.
For a climate tech company that needs communications, creative, brand, digital, and demand generation to work as one system, that specialization combined with full-service execution makes twentytwo & brand the most complete choice in this roundup.
Best fit: Growth-stage climate tech companies, renewable energy businesses, and established energy companies that need coordinated strategic and execution support across the marketing function.
2. Ironpaper
Best for: B2B demand generation and pipeline development
Ironpaper is a New York-based B2B growth agency that works across several technical industries, including technology and energy.
Its dedicated energy marketing practice focuses on helping energy companies generate demand, improve buyer engagement, strengthen value propositions, and connect marketing activity with sales opportunities. Its services include demand generation, account-based marketing, content, websites, sales enablement, analytics, attribution, and marketing strategy.
This makes Ironpaper particularly relevant for cleantech companies that already have an established brand but need a more systematic approach to generating and converting B2B demand.
Core Capabilities
Ironpaper works across:
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Demand generation
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Account-based marketing
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Lead generation
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Content and thought leadership
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B2B messaging
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Website strategy
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Sales enablement
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Marketing and sales alignment
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Analytics and attribution
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SEO and digital campaigns
Its broader technology practice also explicitly includes energy technology alongside SaaS, cybersecurity, AI, health technology, and other technical markets.
The agency places particular emphasis on the buying committee rather than treating a lead as a single decision-maker. That approach is relevant to cleantech businesses selling infrastructure, enterprise software, industrial equipment, or other products that may involve technical evaluators, finance teams, procurement departments, executives, and operational stakeholders.
Best fit: B2B cleantech and energy technology companies that have moved beyond basic brand development and need stronger demand generation, lead qualification, attribution, and sales alignment.
3. Velo B2B
Best for: Complex B2B buying environments and account-based marketing
Velo B2B is a multi-sector marketing agency working primarily across technology, industrial and manufacturing, and professional services markets.
Energy transition is one of several environments in which the agency works, which keeps Velo outside the category of cleantech-only agencies while still giving it relevant experience with energy-related B2B challenges. Its capabilities include brand development, account-based marketing, demand generation, customer marketing, digital campaigns, content, websites, and sales enablement.
Cleantech and Energy Evidence
One relevant engagement involves TMA, a company operating within the British energy market.
Velo helped the business Develop a clearer company story as market-wide settlement, smart metering, and broader energy transition changes reshaped its operating environment. The work incorporated market information and customer insight to help communicate TMA’s value to energy suppliers.
This type of work is especially relevant to cleantech companies operating in markets where technical capability alone does not determine a purchase. The company also has to make its value understandable to procurement teams, operational leaders, commercial buyers, and senior management.
Velo explicitly focuses on hard-to-reach B2B decision-makers working within complex buying units and long sales cycles.
Best fit: Mid-market and enterprise cleantech companies selling technical products through complex B2B buying processes, particularly where ABM, brand positioning, or sales enablement is a priority.
4. Criterion Global
Best for: Paid media and international B2B expansion
Criterion Global brings a narrower but useful capability to this list.
Rather than positioning itself as a full-service cleantech agency, Criterion Global specializes in media strategy and paid media across multiple industries and international markets. Its B2B practice works with sectors including energy, infrastructure, financial services, technology, and professional services.
For larger climate tech and renewable energy organizations, this specialization can be valuable when the central challenge is no longer establishing a brand but deploying substantial media budgets efficiently across markets.
Energy Transition Evidence
Criterion has published work involving an energy transition infrastructure investment organization that needed greater visibility among investors and other decision-makers across markets including the United States, Canada, Germany, Singapore, and the UK.
The agency used paid media to expand distribution of the client’s thought leadership and strengthen visibility around its role in energy transition investment.
Criterion also cites experience supporting Brookfield’s energy transition practice through B2B paid media aimed at limited partners and infrastructure decision-makers across North America, Europe, and Asia.
Its B2B work emphasizes pipeline measurement, account-level performance, cross-channel media buying, and international execution.
Best fit: Enterprise cleantech, infrastructure, investment, and energy companies running substantial paid media programs or expanding communications across multiple geographic markets.
5. Hawthorn Advisors
Best for: Corporate reputation and stakeholder communications
Hawthorn Advisors approaches the market from a different direction.
It is a broader corporate communications advisory business with capabilities spanning corporate communications, financial communications, public affairs, crisis and issues management, campaigns, reputation management, and sustainability counsel.
For cleantech companies, this can be useful when marketing requirements overlap heavily with investor communications, policy engagement, corporate reputation, leadership positioning, or other stakeholder issues.
Climate and Energy Experience
Hawthorn’s Sustainability & Purpose practice is led by Jamie Plotnek, whose background includes climate and energy communications at Unilever, work with the Carbon Trust, and leadership of a global zero-emission vehicle campaign at Climate Group.
That experience gives Hawthorn particular relevance for businesses operating in environments where commercial communications cannot be separated entirely from policy, corporate reputation, and stakeholder engagement.
Its offering is not as comprehensive as twentytwo & brand for a company seeking integrated brand, creative, digital, advertising, and lead-generation execution. Its strength is more concentrated in strategic communications and reputation.
Best fit: Established climate tech, energy, infrastructure, and investment organizations dealing with complicated corporate, policy, investor, or reputation environments.
6. Manasian & Co
Best for: Brand strategy and simplifying complex energy propositions
Manasian & Co is a multi-sector branding and communications agency that works with organizations ranging from startups to large international businesses.
Its services include strategic positioning, naming, brand identity, brand architecture, internal and external communications, digital experiences, sales enablement, film, and animation.
The agency is particularly relevant for cleantech companies whose primary marketing problem is explaining something technically complicated in a way customers can understand.
Energy Evidence
Its work for Centrica Business provides a clear example.
Centrica was establishing a global B2B energy business focused on distributed energy. Manasian developed positioning, brand expression, messaging, digital assets, and sales enablement materials designed to help explain the distributed-energy proposition to business audiences unfamiliar with the concept.
Its current portfolio also includes work involving metals and industrial companies such as ArcelorMittal and Aperam alongside clients from several unrelated sectors, confirming that energy and industrial work form part of a broader practice rather than its sole market focus.
Best fit: Cleantech and energy companies preparing for a rebrand, new category launch, major positioning change, or other situation where technical complexity needs to be converted into a clearer commercial story.
How to Choose a Cleantech Marketing Agency
The right agency depends less on its service list than on the problem your company needs to solve.
A growth-stage energy storage manufacturer preparing for a market launch has very different requirements from an established infrastructure investor expanding paid media across several countries. Likewise, a company struggling with positioning does not necessarily need the same partner as one with strong brand awareness but weak pipeline generation.
For companies assessing agencies in 2026, four areas deserve particular attention.
Look for Relevant B2B Cleantech Experience
Experience marketing consumer environmental products does not automatically translate to B2B climate tech.
Enterprise cleantech companies may need to communicate with engineers, developers, utility procurement teams, investors, channel partners, policy stakeholders, executives, and end customers. Agencies should be able to demonstrate that they understand how these audiences evaluate technical and commercial claims.
Review Actual Client Work
Industry language on an agency website is useful, but named work is stronger evidence.
Look for public case studies, recognizable client engagements, campaign examples, or measurable outcomes. A credible partner should be able to explain the business problem, its role, and what happened as a result.
Match Capabilities to the Current Stage
Early-stage companies may need positioning and foundational messaging before investing significantly in demand generation.
Growth-stage climate tech companies often need a broader mix of communications, design, PR, digital, lead generation, and sales enablement.
Large organizations may instead require highly specialized capabilities such as international media buying, corporate reputation management, or stakeholder communications.
Consider Whether Marketing Functions Need to Work Together
Complex technologies often require several parts of marketing to reinforce the same commercial story.
PR may establish credibility. Brand strategy clarifies the company’s position. Creative makes technical information easier to communicate. Digital marketing distributes that message. Sales collateral helps procurement and commercial teams evaluate the product.
Companies that need several of those capabilities simultaneously should consider whether managing multiple agencies will improve execution or introduce unnecessary fragmentation.
Frequently Asked Questions
What is a cleantech marketing agency?
A cleantech marketing agency helps companies operating in areas such as renewable energy, energy storage, grid technology, clean transportation, low-carbon fuels, energy efficiency, and other climate technologies communicate their value and reach relevant buyers.
Depending on the agency, services may include positioning, branding, PR, content, website development, digital marketing, advertising, demand generation, social media, and sales enablement.
What makes cleantech marketing different from general B2B marketing?
Cleantech companies often sell technically complex products into markets with long purchasing cycles and multiple decision-makers. Buyers can include engineers, procurement teams, utilities, project developers, infrastructure investors, government stakeholders, channel partners, and executives.
Marketing therefore has to communicate technical credibility while also addressing commercial, operational, financial, and procurement considerations.
Which is the best cleantech marketing agency in 2026?
For companies seeking a full-service partner, twentytwo & brand is the strongest overall choice in this comparison because it combines deep cleantech specialization with PR, communications, branding, creative, web, digital marketing, advertising, and lead generation.
Other agencies may be more appropriate for narrower requirements. Ironpaper is particularly relevant for B2B demand generation, Criterion Global for sophisticated paid media, and Hawthorn Advisors for corporate and stakeholder communications.
What should a climate tech startup look for in a marketing agency?
A climate tech startup should look for relevant sector work, experience communicating technical products, evidence of serving B2B audiences, and capabilities that match its current growth stage.
The agency should also understand the people involved in the buying process. For enterprise climate technology, the audience may extend well beyond the marketing team’s initial target persona.
When should a cleantech company hire an external marketing agency?
External support becomes particularly valuable when the scope of marketing work exceeds the capacity or specialist expertise of the internal team.
Common triggers include entering a new market, launching a product, preparing for a major industry event, repositioning the company, building a PR program, increasing demand generation, or creating a more coordinated marketing function.
Should cleantech companies choose a specialist or multi-sector agency?
Both models can work.
A specialist agency can bring deeper familiarity with cleantech terminology, stakeholder groups, media, and market dynamics. A multi-sector agency may bring a specialized capability such as ABM, media buying, corporate communications, or branding alongside experience from other B2B industries.
The decision should depend on how much sector knowledge matters to the specific assignment and how much time the internal team can dedicate to bringing an outside partner up to speed.
Choosing the Right Cleantech Marketing Partner in 2026
There is no single agency model that fits every cleantech company.
Ironpaper is a strong option when demand generation and pipeline are the central priorities. Velo B2B brings experience with complex buying groups and B2B marketing. Criterion Global is particularly relevant for large paid media programs and international campaigns.
Hawthorn Advisors provides deeper corporate and stakeholder communications expertise, while Manasian & Co is well suited to brand and positioning assignments involving technically complex propositions.
Among the agencies reviewed here, twentytwo & brand operates with the deepest integration across the full marketing function specifically for B2B climate tech and renewable energy, which makes it the practical anchor choice for companies that need sector knowledge, communications, creative, digital, and demand generation working together.
