From Napkin Sketch to Unicorn: How Startups Navigate the VC Funding Journey

Discover how venture funding stages - from Pre-Seed, Seed, Series A, B, and C to Exit - help startups scale and build impactful, future-ready companies.

From Napkin Sketch to Unicorn: How Startups Navigate the VC Funding Journey

Table of Contents

Introduction: The Venture Funding Journey

Picture this: A founder sits in a coffee shop, scribbling ideas on a napkin. Fast forward five years, and that same idea is now a company worth hundreds of millions, employing hundreds of people, and making a real dent in solving climate change.

Here is a real-world example:

First-ever tweet – sent by Twitter co-founder Jack Dorsey – on March 21, 2006. 

Twitter was at the time a prototype SMS-based service limited to 140 characters, symbolizing the casual origins of what became a global communication tool.

Sixteen years later – news in The New York Times on October 27, 2022 – when Twitter was purchased by Elon Musk for $44 billion.

Sounds like a fairy tale – of just 16 odd years – where Twitter evolved into a cultural artefact?

It’s actually the standard playbook for venture-backed startups. Twitter was a venture capital (VC) funded company before it became a public company and was later purchased by Elon Musk. In its early years, it received significant VC funding from investors like Union Square Ventures, Spark Capital, and Benchmark Capital. After going public in 2013, its ownership was distributed among public shareholders until October 2022, when it was acquired by Elon Musk.

But here’s the thing – getting from that coffee shop napkin to a thriving business doesn’t happen by magic. It happens through a series of carefully orchestrated funding rounds, each designed to fuel the next stage of growth.

Let’s pull back the curtain on how venture funding really works, especially in the world of climate-tech, where we’re not just building businesses – we’re literally trying to save the planet.

The Secret Sauce: Valuation

Before we dive into the venture funding stages, here’s something important: before every funding round, investors conduct what’s called a valuation. Think of it as answering the question: “What’s this company actually worth?”

Valuation basically means figuring out what a startup is worth when it’s raising money. It helps decide how much equity the founders give up in exchange for investment. It’s one of the most important parts of the negotiation because it’s really about the company’s future potential – not just what it has or earns today. You’ll see this number show up in key investment documents like the term sheet.

The investors look at everything – the founding team’s track record, market size, revenue projections, the competition, and yes, the risks. For example, Electric Hydrogen, a climate-tech startup, raised $380 million in a Series C funding round that valued the company at over $1 billion. Valuation is part art, part science, and entirely crucial because it determines how much of the company founders give up for each investment.

Now, let’s walk through the journey.

Stage 1: The Ideation/Pre-Seed Stage - "Does This Thing Actually Work?"

The Vibe: Raw, scrappy, figure-it-out-as-you-go energy

Every startup begins with a light-bulb moment. Someone sees a problem that needs solving and thinks, “I can fix this.” At the pre-seed stage, it’s all about answering one question: Does this idea have legs?

Founders at this stage are usually bootstrapping with their savings, borrowing from friends and family, or getting small checks from angel investors who believe in them personally. The goal isn’t to build a perfect product – it’s to build something good enough to prove the concept works.

In climate-tech, this might look like:

  • Testing a new solar panel design in a lab
  • Building a prototype carbon tracking app
  • Running a pilot project for sustainable agriculture tech


Climate Angels
, Indian Angel Network (IAN), Huddle Ventures, Blume Ventures, Theia Ventures, Avaana Capital, and Seafund are among the Indian funds actively backing climate founders at this critical early stage. Climate Angels has funded more than 20+ early-stage climate-tech startups since its inception, making its debut investment with BECO – a Mumbai-based D2C startup committed to creating plastic-free, plant-based home, kitchen, and personal care products.

Typical Check Size: $50,000 – $500,000
What Founders Are Proving: “My idea solves a real problem, and people actually care about it.”

Stage 2: Seed Funding - "Let's Get This Business Off the Ground"

The Vibe: Hustle mode activated

Congrats! Your prototype worked, and people are interested. Now it’s time to get serious.

Seed funding is often the first “real” VC round. This is where startups take their validated idea and start building an actual business around it. You’re hiring your first employees, refining the product based on real user feedback, and figuring out how to actually make money.

For climate startups, seed money might fund:

  • Your first commercial pilot (not just a lab experiment anymore)
  • Hiring engineers to take your tech from prototype to production-ready
  • Early customer acquisitions and partnerships


Investors like Omnivore, Accel, Elevation Capital, Climate Angels, Peak XV Partners, Transition VC, Green Frontier Capital, and Unicorn India Ventures are particularly active at this stage in the investment space. 

Typical Check Size: $500,000 – $2 million
What Founders Are Proving: “We have product-market fit, and we know how to grow this.”

Stage 3: Series A - "Okay, This Is Actually Working"

The Vibe: Time to scale what’s already working

By Series A, the experimentation phase is largely over. You’ve proven your product works, customers are using it (and hopefully paying for it), and now investors want to see you pour gasoline on the fire.

Series A investors aren’t betting on potential anymore – they’re betting on momentum. They want to see data: user growth curves, revenue numbers, and retention rates. They’re asking, “Can this 10x?”

In the climate world, Series A funding helps startups go from “interesting technology” to “commercially viable business”. Think:

  • Manufacturing at scale
  • Expanding from one city to ten
  • Building out your sales and marketing teams


Take Exponent Energy, an Indian EV charging startup. They raised $13 million in Series A led by Lightspeed India, with participation from YourNest VC, 3one4 Capital, and AdvantEdge VC. The goal? Scale their rapid-charging infrastructure and streamline battery production. Classic Series A moves!

Typical Check Size: $2 million – $15 million
What Founders Are Proving: “We’ve cracked the code on growth, and we’re ready to dominate our market.”

Stage 4: Series B & C - "Let's Go Big or Go Home"

The Vibe: Growth at all costs (but strategic growth)

Once you’ve proven you can scale in one market or with one product, it’s time to think bigger. Much bigger.

Series B is about expansion – new geographies, new customer segments, maybe even new products. You’re building out your leadership team, investing heavily in R&D, and establishing yourself as a serious player in your industry.

Series C is when things get really interesting. At this point, you might be acquiring competitors, launching entirely new product lines, or preparing for an eventual exit. Private equity firms and strategic investors often join at this stage, bringing not just money but valuable industry connections and expertise.

In climate-tech, this is when startups go from “promising company” to “industry leader”. Companies like Ola Electric, ChargePoint, and Climeworks used these rounds to become household names in their respective categories.

Here’s another great example: EMotorad, an Indian electric bike manufacturer, raised $20 million in Series B led by Panthera Growth Partners, with participation from Green Frontier Capital. Fun fact: Climate Angels had backed them way back at the pre-seed stage – talk about coming full circle!

Typical Check Sizes:

  • Series B: $15 million – $50 million
  • Series C: $50 million – $200 million+


What Founders Are Proving:
“We’re not just a startup anymore – we’re building an enduring company.”

Stage 5: The Exit - "We Made It!"

The Vibe: Mission accomplished (but also bittersweet)

Every journey has a destination. In the VC world, that’s called an exit – and it’s when both founders and investors finally cash in on years of hard work.

Exits typically happen in three ways:

  1. Acquisition: A bigger company buys your startup. Maybe they want your technology, your team, or your customer base.
  2. IPO (Initial Public Offering): Your company goes public, and anyone can buy shares on the stock market.
  3. Secondary Sale: Early investors sell their shares to later-stage investors or other buyers.

For climate-tech startups, exits represent something profound beyond just financial returns. They prove that green technologies aren’t just “nice to have” – they’re valuable, scalable, and here to stay.

Case in point: In 2019, Malaysian oil & gas giant Petronas acquired Amplus Energy Solutions, a Singapore-based distributed solar company, for INR 2,700 Crore (around US$388 million) from the New York-based global infrastructure investor, I Squared Capital, providing I Squared Capital a complete exit from its investment in Amplus. 

This wasn’t just a big payday – it was a signal to the entire climate-tech ecosystem that infrastructure and energy startups can achieve massive scale and attract serious strategic buyers. It told entrepreneurs and investors alike: “Yes, you can build billion-dollar climate businesses in India.”

Why Climate Venture Funding Is Different (And Why It Matters)

Here’s what makes climate venture funding special: success isn’t measured purely in dollars and cents.

Traditional VC has always been about one thing – maximizing financial returns. Find a rocket ship company, ride it to the moon, exit at peak valuation. Rinse and repeat.

Climate VC adds another dimension: impact. How much carbon did your company eliminate? How many tons of waste did you divert from landfills? How many communities did you bring clean energy to?

Every funding round in climate-tech is a step toward solving humanity’s biggest existential challenge. When investors back renewable energy companies, EV infrastructure, sustainable agriculture, or carbon capture technologies, they’re not just financing startups – they’re financing solutions to the climate crisis.

And here’s the beautiful part: what’s good for the planet is increasingly good for business. The market is demanding sustainable solutions, governments are incentivizing them, and consumers are choosing them. Climate-tech founders don’t have to choose between impact and profit – they can pursue both.

The Bottom Line: Every Funding Round Tells a Story

The journey from pre-seed to exit isn’t just about raising progressively larger checks. It’s about proving your vision at every stage, building something meaningful, and ultimately creating lasting value.

For climate-tech founders, each funding round is validation that you’re on the right track – not just toward building a successful company, but toward solving problems that truly matter.

The next generation of unicorns won’t just be profitable. They’ll be planet-positive, tackling climate challenges at scale while building businesses that endure.

So, if you are a climate-tech founder, looking for funding from investors, check out our Founders page and start raising funds.

And if you are an investor, seeking that next big green unicorn to ride into the sunset, check out our Investors page. You can either join the investor syndicate or invest individually in some cutting-edge climate–tech startups.

As for that napkin sketch from the coffee shop? In the right hands, with the right capital, and at the right time, it just might change the world.

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