Executive ghostwriter
for clean energy founders

Hey! I’m Tegan Tallullah. I help mission-driven leaders in clean energy hardware, built environment & physical climate tech to build thought leadership that wins over corporate buyers, green investors, and top talent

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Get in touch

Combining digital writing + comms strategy + B2B climate knowledge to
build your category authority

Along with being an experienced writer, I have a background as a communications manager with 10+ years in the B2B sustainability world. I know my Scopes 1, 2, and 3. I know about science-based targets, supply chain decarbonisation, and carbon reporting. I’m well versed in the business case for renewables and green buildings, and I am deeply passionate about the clean energy revolution.

And I don’t just write catchy posts — I think strategically about how every message fits into your strategy and brand.

Founders, I get what you’re dealing with:

  • A million operational demands on your time as you scale physical infrastructure and a growing team (finding time to post is bottom of the list even though building your brand is a strategic priority!)

  • The urgency to sign commercial agreements before you run out of cash runway, while laying the foundation for your next funding round

  • Proving your product’s sustainability credentials and ESG compliance to risk-averse CSOs and CPOs

  • Brilliant technical expertise that is hard to translate for non-technical audiences without dumbing down or greenwashing

  • An internal team that is completely swamped. You know you need better visibility to attract capital and land commercial pilots, but you can't yet justify the headcount for full-time, in-house senior comms leaders and content specialists. It’s a classic chicken-and-egg trap.

You’ve probably tried using AI or generalist writers to help, only to be disappointed by generic fluff that completely missed the technical nuance, made you sound like everyone else, or risked crossing into accidental greenwashing.

It doesn't have to be that way.

Whether your startup is pioneering next-gen industrial batteries, innovative solar fabrics, smart heat pumps, or circular building materials, I can leverage my corporate sustainability experience (CDP, EcoVadis, Bioregional) to write content that lands with your B2B audience. I have spent years immersed in the compliance and disclosure frameworks that your potential buyers use to assess vendors.

As a dedicated ghostwriter and comms strategist, I combine strategic thinking + digital writing best practise + deep climate solution expertise to turn your industry insights into clear, compelling content that builds your authority — while you focus on building your business. 

My Track Record:

  • I've helped a C-suite sustainability expert grow his LinkedIn following by 90%, generating thousands of views and attracting inboundinquiries from major global enterprises

  • I've written high-impact content for B2B sustainability SaaS giant EcoVadis to boost enterprise authority and lead generation

  • I launched over a dozen industry-leading reports as comms manager at CDP, co-leading a campaign that increased inbound leads by 273%

  • I scaled the digital following from hundreds to thousands for the open-source climate tech analytics startup TransitionZero

How we can work together

The Executive Thought Leadership Package (monthly retainer)

An efficient, high-impact content engine for busy founders & execs who want to build their visibility, trust and authority with minimal time commitment.

  • A single monthly 45-minute recorded interview to extract your insights, opinions, and stories

  • 1 longform thought leadership article + 8 impactful LinkedIn posts (so you can publish twice a week)

  • Content strategy for LinkedIn—including defining your strategic content pillars

  • Refreshing the messaging on your LinkedIn profile

  • Ongoing collaborative content ideation & messaging alignment with your funding milestones and business priorities


Pricing: From £1,000 per month

Other services

  • Thought leadership articles / blog posts / op-eds

  • Project case study deep dives

  • Comms advisory consulting sessions

Pricing: From £500 per article

Contact me for a discovery call

Testimonials

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  • “I had the pleasure of working with Tegan Tallullah on the copywriting and content strategy for my website. It was invaluable to collaborate with someone specialized in copywriting and marketing who also has deep understanding in environmental sustainability and the various frameworks behind it—an expertise that's rare to find. She was incredibly quick to grasp my business, audience, and the nuanced aspects of sustainability consulting, while also helping me define my key differentiators. Despite working under tight deadlines, she remained highly responsive and consistently delivered high-quality results. I highly recommend her to anyone looking for a talented and committed professional.”

    Hélène Baron – Founder & Managing Director at Baron Sustainability

  • "Tegan is a brilliant communicator, content writer, copywriter and comms strategist. Thanks to her leadership, our international cooperative social media service grew in both reputation and impact. You'll be hard-pressed to find someone with more passion, commitment and integrity in the sustainability communications 'space'. If you're looking for someone who can work effectively, both within teams or independently, to deliver on short- or long-term projects, look no further!"

    Donnie Maclurcan, Director of Strategy at Post Growth Institute

  • "Tegan worked with me on multiple global reports on Supply Chain environmental impacts. She was quick to pick up the technical aspects and easy to collaborate with, but most of all she was excellent at getting results!"

    Sonya Bhonsle, Global Head of Value Chains & Regional Director Corporations at CDP

  • "Tegan is a legend and I’ve utterly enjoyed working with her. I worked closely with Tegan within a strategic marketing project, as well as within various other communications, marketing and digital activities, campaigns, planning and processes building. She had solid knowledge and passion for the environmental field, was hardworking, approachable, learnt incredibly fast and showed a strategic mindset to communications and marketing. She achieved a great deal for CDP and its communications and marketing, built and navigated complex relationships, balancing out assertiveness with collaboration, and was a highly valued member of the team."

    Slavina Dimitrova, Marketing & Digital Consultant at Slavina Marketing

  • "I worked with Tegan on multiple communications launches, campaigns and reports at CDP. She is one of the best writers I've collaborated with, and consistently achieved excellent results across media and marketing. Tegan is deeply passionate about working on the climate crisis, and brings a winning combination of skills to reach and influence decision-makers and change-makers. I've admired her ability to ensure projects stay tightly focused on the target audience, and her brilliant stakeholder management skills."

    Helena Cicmil, Strategic Communications Consultant