Cleantech companies rarely need publicity for its own sake. A PR program may need to establish a new category, support entry into the US market, give technical executives a credible industry voice, communicate a funding milestone, or build confidence among customers, investors, utilities, and other stakeholders.
That makes sector understanding particularly important when selecting an agency. The strongest partner should understand both the technology and the audiences evaluating it.
For this 2026 shortlist, we reviewed agencies with public evidence of work in clean energy, climate tech, renewable energy, energy transition, or adjacent technical markets. The six firms below bring different strengths to the sector, from specialist integrated communications to global corporate reputation and stakeholder programs.
Which Cleantech PR Agency Fits Your Communications Priority?
Rather than comparing agencies solely by service lists, it is more useful to consider the communications assignment each is equipped to handle.
For integrated cleantech PR and communications: twentytwo & brand
For energy companies needing international B2B communications: Aspectus Group
For clean energy media relations and executive visibility: Gregory FCA
For corporate reputation and complex stakeholder communications: MikeWorldWide
For large-scale energy communications and public affairs: Weber Shandwick
For global energy transition and policy communications: FleishmanHillard
Each agency has public evidence connecting it to energy or cleantech work, but the depth of specialization, service model, and typical client requirements differ considerably.
1. twentytwo & brand.
A Cleantech Specialist That Connects PR With the Rest of Marketing
twentytwo & brand. is built specifically for companies operating across B2B climate tech, renewable energy, and the wider energy transition.
That specialization matters because PR assignments in this sector rarely remain confined to media relations. A company preparing to enter a new market may need a stronger corporate narrative before pitching journalists. A funding announcement may need executive positioning and social amplification. A product launch may require creative assets, web content, sales materials, and communications to work from the same positioning.
twentytwo & brand combines these functions rather than treating PR as an isolated activity. Its capabilities cover PR and communications, brand strategy and messaging, social media, branding and creative, web design and development, advertising, and lead generation.
The agency reports experience across more than 100 cleantech projects and works across areas including solar, wind, energy storage, EV and mobility, grid technologies, and other parts of the clean economy.
Where Its Sector Experience Shows
FranklinWH is a useful example of the agency’s operating model.
The residential energy storage company was preparing for its North American market entry with only four weeks before an important industry conference. twentytwo & brand’s work extended across US-focused positioning, communications, creative, digital materials, sales collateral, advertising, and web support.
The significance of the engagement is the coordination involved. Market-entry communications were developed alongside the materials needed to present the company consistently to media, customers, partners, and other industry audiences.
The agency’s broader client experience includes companies such as CS Energy, Pearce Renewables, DEPCOM Power, Heliolytics, Lodestar Energy, and Empact Technologies.
Client-reported outcomes across its work include more than 200,000 impressions within four months, fourfold LinkedIn follower growth over eight months, and approximately 55,000 impressions generated in four weeks through a PR and communications plan.
twentytwo & brand has also received consecutive Inc. 5000 recognition and a w3 Gold Award for Social Content & Marketing in the Environment and Sustainability category.
The Assignment It Fits
twentytwo & brand is particularly relevant when a B2B climate tech company has a lean internal marketing team and needs PR to connect directly with positioning, content, creative, digital, and broader communications execution.
It is also a practical option for growth-stage companies entering a new market or moving from technically focused communications toward a more established corporate presence.
2. Aspectus Group
B2B Communications Across Energy, Industrials, Finance, and Technology
Aspectus Group is a global brand, marketing, and communications agency working across four primary areas: energy, industrials, financial services, and technology.
Its broader sector mix distinguishes it from agencies dedicated exclusively to cleantech while still giving the firm substantial exposure to energy-transition communications.
The agency operates internationally, with offices spanning locations including New York, Boston, London, Aberdeen, Singapore, Dubai, Sydney, and other major commercial markets.
That footprint is relevant to energy businesses whose PR requirements extend across several markets or stakeholder groups.
Evidence From Energy-Transition Work
Aspectus has an extensive public portfolio of energy assignments.
Its work includes repositioning JDR Cable Systems around offshore wind, building credibility for Oxford Flow during its expansion in the energy transition market, developing media visibility for battery manufacturer Verkor, supporting Electron in the energy and utilities market, and working with the Sustainable Energy Association of Singapore.
The latter engagement illustrates its ability to combine several communications techniques.
For the Sustainable Energy Association of Singapore, Aspectus used media engagement, research-led storytelling, executive commentary, LinkedIn, email communications, and event support. The campaign generated more than 20 pieces of coverage annually, an estimated annual audience exceeding 900,000, and at least six top-tier media placements per year according to the agency’s case study.
The Assignment It Fits
Aspectus is worth considering when an energy or climate technology business needs PR across multiple international markets or wants communications connected with broader B2B brand, content, and digital activity.
Its experience across financial services and industrial markets can also be useful for climate businesses communicating with infrastructure investors, corporate buyers, and other commercially focused stakeholders.
3. Gregory FCA
Media Relations for Clean Energy Companies Building US Visibility
Gregory FCA is a broader public relations firm with experience across technology, financial services, healthcare, real estate, and clean tech and energy.
Its cleantech work provides particularly strong evidence around media relations, executive thought leadership, content development, and social communications.
One of the clearest examples is its relationship with Enel North America.
What the Enel Work Demonstrates
Enel North America needed to strengthen its profile in the United States following leadership changes and shifts in business focus.
Gregory FCA supported the company’s communications around utility-scale renewable energy, storage, demand response, and energy and commodity management. The program incorporated proactive media relations, executive thought leadership, educational content, contributed articles, social media, and creative work.
The agency reports more than 700,000 LinkedIn impressions, over 94,000 engagements, and a 13.5% engagement rate from the work.
Those results provide more useful evidence than a general claim of energy-sector expertise because they show the communications channels Gregory FCA has actually managed for a major clean energy organization.
The Assignment It Fits
Gregory FCA makes sense for established cleantech and renewable energy companies seeking greater US media visibility, stronger executive positioning, and consistent thought leadership.
It may also suit companies that already have their broader marketing infrastructure in place and want PR, content, and social communications to become more systematic.
4. MikeWorldWide
Reputation Management When the Audience Extends Beyond Customers
Some cleantech communications assignments are primarily about generating industry awareness. Others involve investors, policymakers, communities, employees, customers, and corporate reputation at the same time.
MikeWorldWide, also known as MWW, is better aligned with the second category.
The independent communications agency works across corporate reputation, consumer communications, public affairs, technology, healthcare, food and beverage, infrastructure, and other sectors. It has also developed a dedicated energy practice.
Its energy services encompass media relations, thought leadership, digital and social strategy, stakeholder communications, reputation management, and data-supported communications planning.
Public Energy Experience
MWW’s published work includes Dominion Energy, the New York Power Authority, and New Jersey’s Clean Power Choice program.
Its broader infrastructure practice also addresses issues such as regulatory scrutiny, supply-chain complexity, capital markets communications, decarbonization initiatives, crisis preparation, and executive visibility.
That combination is relevant to energy infrastructure businesses because their communications requirements can extend well beyond prospective customers.
A utility, project developer, energy infrastructure provider, or enterprise climate company may need to maintain credibility simultaneously with local communities, investors, policymakers, employees, business partners, and the media.
The Assignment It Fits
MikeWorldWide is better suited to established companies with complex reputation and stakeholder requirements than to an early-stage startup looking only for its first few trade-media placements.
Its broader corporate communications infrastructure becomes more valuable when the communications brief involves public affairs, corporate reputation, issues management, or infrastructure stakeholders alongside conventional PR.
5. Weber Shandwick
Global Communications for Large Energy Organizations
Weber Shandwick is one of the largest communications firms in this comparison and works across many industries rather than concentrating exclusively on cleantech.
Within that broader operation, however, it maintains a dedicated energy practice covering renewable and carbon-free generation, electrification, transmission and distribution, energy technology, policy, and related areas.
Its energy capabilities extend beyond earned media. The agency describes work involving brand communications, policy initiatives, multi-channel marketing, lead generation, stakeholder relationships, and energy-efficiency programs.
Evidence From the Energy Market
Constellation provides a useful recent example of its work.
Following the energy company’s separation from Exelon, Weber Shandwick supported communications and advertising intended to establish Constellation as an independent company and strengthen awareness around its carbon-free energy positioning.
The work has continued through national campaigns aimed at audiences including policymakers and industry influencers.
Weber Shandwick also has a longer history of renewable energy communications, including work for solar energy businesses and organizations involved in the wider transition toward lower-carbon energy systems.
The Assignment It Fits
Weber Shandwick is most relevant to large energy companies and established enterprises that need substantial communications resources across corporate reputation, public affairs, policy, brand, and media.
Its scale may be less relevant to a smaller climate tech company that needs a tightly integrated extension of a lean marketing team. For enterprise organizations managing numerous audiences across markets, however, that scale can become an advantage.
6. FleishmanHillard
Communications Where Energy, Policy, and Corporate Affairs Intersect
FleishmanHillard is another large global communications agency whose energy capabilities sit within a much broader multi-industry organization.
Its work is especially relevant when an energy company’s communications priorities intersect with regulation, government affairs, corporate positioning, and international stakeholder engagement.
The firm’s European energy and climate practice reports experience with renewable energy producers, transmission system operators, institutional investors, and other energy organizations. Its services combine communications with engagement around a changing policy environment.
Current Energy-Transition Evidence
In 2025, E.ON selected FleishmanHillard to support PR and communications in the Czech market.
The assignment includes strategic PR counsel, media relations, external communications, and internal communications, with subjects including decentralized energy, community energy, digitalization, electromobility, and renewable energy.
More recently, PRovoke Media’s 2026 agency coverage identified Commonwealth Fusion and Strata Clean Energy among FleishmanHillard’s new clients, providing additional evidence of current work connected to the energy transition.
The Assignment It Fits
FleishmanHillard is most relevant to established companies facing complicated communications environments involving policy, regulation, corporate affairs, and multiple international markets.
For a cleantech company whose immediate priority is a focused product launch or an integrated marketing program, a more specialized partner may be more practical. For organizations whose communications challenges extend into government and institutional stakeholder relationships, its global infrastructure is more applicable.
What Cleantech Companies Should Expect From a PR Agency
A credible PR program should begin before a press release is written.
The agency needs to understand what the company sells, why the technology matters commercially, which audiences influence adoption, and what evidence supports the company’s claims. In B2B climate tech, those audiences can include enterprise procurement teams, engineers, utilities, developers, infrastructure investors, policymakers, channel partners, and industry media.
From there, the communications program may involve several different functions.
Technical Translation
Journalists and buyers do not necessarily need the same level of technical detail as an engineering team.
The agency should be capable of preserving accuracy while making a product’s relevance understandable. This is particularly important in areas such as grid technology, battery storage, renewable energy infrastructure, energy software, advanced materials, and industrial decarbonization.
Executive Positioning
Founders and technical leaders often hold much of a climate tech company’s expertise.
A strong PR partner should be able to convert that expertise into useful commentary, contributed articles, speaking opportunities, interviews, and other forms of thought leadership without turning every appearance into a product pitch.
Evidence-Based Story Development
Funding announcements and product launches can create temporary media opportunities, but they cannot sustain an entire communications program.
Agencies should be able to identify credible stories around customer adoption, market data, technical milestones, partnerships, research, industry developments, and executive expertise.
Communications Across the Buying Environment
B2B climate technology is often evaluated by more than one audience.
Media coverage may strengthen recognition, but the same corporate narrative also needs to make sense to customers, investors, procurement teams, project partners, and other stakeholders. This is where coordination between PR and the broader marketing function becomes particularly valuable.
When Does a Cleantech Company Need Specialist PR Experience?
Sector specialization becomes more important as the technology, stakeholder environment, or purchasing process becomes more complicated.
A PR agency does not need to know every technical detail before an engagement begins. It should, however, understand the commercial environment well enough to identify what is newsworthy, recognize relevant media, ask useful questions of subject matter experts, and avoid reducing complex technologies to generic environmental messaging.
For companies operating in solar, storage, wind, EV infrastructure, grid modernization, clean fuels, energy software, or other technical areas, previous energy experience can shorten that learning process considerably.
It can be particularly important during a market entry, major product launch, fundraising period, corporate repositioning, or other situation where the company has limited time to establish credibility.
Frequently Asked Questions About Cleantech PR Agencies
What does a cleantech PR agency do?
A cleantech PR agency helps climate tech, clean energy, and renewable energy companies manage how they communicate with media and other important stakeholders.
Work can include communications strategy, messaging, media relations, thought leadership, executive profiling, contributed content, product and company announcements, crisis communications, awards, events, and social amplification.
Which cleantech PR agency is best for B2B companies?
The answer depends on the communications assignment. For B2B climate tech and renewable energy companies that need PR integrated with broader marketing execution, twentytwo & brand is the strongest overall option in this comparison.
Aspectus is particularly relevant for international B2B energy communications, while larger firms such as Weber Shandwick and FleishmanHillard are better aligned with complex multinational corporate and policy communications.
How is cleantech PR different from general technology PR?
The difference is primarily the market context.
Cleantech companies may operate within regulated energy markets, sell through lengthy procurement processes, depend on infrastructure development, or communicate with technical buyers and investors simultaneously.
An agency therefore needs to understand not only the technology but also the commercial and stakeholder environment surrounding its adoption.
Can PR help a climate tech company attract investors?
PR can support investor visibility and credibility, but it does not replace investor relations or fundraising.
Relevant business and trade coverage, executive thought leadership, credible customer stories, and clear communication of company milestones can make it easier for investors to understand a company’s position and progress.
Should an early-stage climate tech startup hire a PR agency?
Not automatically.
A company should generally have a clear product, defined audience, credible positioning, and enough genuine developments or expertise to sustain communications activity.
PR becomes more useful when there is something substantive to communicate, such as a market launch, funding round, customer milestone, major partnership, technical achievement, or growing executive point of view.
What should companies ask before hiring a cleantech PR firm?
Ask for specific examples of relevant client work and determine who the agency successfully reached, what communications problem it was solving, and what results it can substantiate.
Companies should also understand whether the agency handles only earned media or can support messaging, content, social communications, creative, digital, and other functions that may need to accompany PR.
Is a specialist cleantech PR agency better than a large global PR firm?
Neither model is automatically better.
Large agencies can provide extensive international resources, corporate affairs capabilities, and public policy support. Specialist firms can provide greater familiarity with the sector and may integrate more closely with lean internal teams.
The appropriate model depends on the company’s size, markets, communications requirements, and internal resources.
Selecting a PR Partner for the Next Stage of Growth
The six agencies in this guide solve different communications problems.
Aspectus Group has substantial B2B energy experience and an international footprint. Gregory FCA provides relevant clean energy media relations and executive visibility capabilities. MikeWorldWide is positioned for reputation and multi-stakeholder assignments. Weber Shandwick and FleishmanHillard bring the scale required for large corporate, international, and policy-oriented communications programs.
Among these PR agencies, 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 want PR to work alongside positioning, creative, digital communications, and broader market growth.
