The 2026 market is harder than the one most climate companies planned for. Capital is still flowing, but it goes to fewer, larger rounds, and the number of investors able to lead a round has fallen. The time between Series A and Series B has stretched to nearly three years, and far fewer companies make the step. The buyer has changed from a sustainability lead to a committee that includes finance, procurement and operations. Federal policy has withdrawn support, while deployment of solar, storage and grid equipment has reached record levels. A company's position depends on which of those currents it sits in.

Marketing and go-to-market strategy are the tools a company has for adapting to those conditions without waiting for them to change. A chosen segment shortens the sales cycle. A business case written for the CFO gets a deal through a committee that the sustainability pitch stalls in. Reference customers and documented proof price the next round, or make it unnecessary. Positioning inside the category a buyer already budgets for, grid reliability or storage rather than decarbonization, finds money that exists. The numbers below are organized as five stages a company passes through, with the operating conditions set out first, so that each decision can be read against the data that bears on it.

Most of what this page describes shows up inside a company as the same gap: someone owns every marketing task and no one owns the strategy. The Ownership Gap diagnostic is free, asks eight questions, and tells you whether your company has it.

The stakes

The 2026 market in six numbers.

Sources: Net Zero Insights, SVB, Forrester, Sightline Climate. Each is cited in full in the tables below.

Stage 1Conditions: policy, deployment and cost

Deployment is at record levels while federal support is being withdrawn. Solar and storage led the largest quarter of US clean power additions on record, and energy investment worldwide is still rising. In the same quarter, developers canceled more announced projects than in any quarter before, and clean energy employment fell for the first time since the pandemic. Where a company's product sits relative to that line decides whether its buyers are accelerating or waiting.

For a commercial team, the buyer's urgency is now tied to specific credit deadlines and specific categories rather than to a general policy direction.

Stage 2Raise: capital is available, concentrated, and slower to reach you

Total funding has held up, but who receives funding has changed. In the first half of 2026 the average round nearly doubled while deal count fell to a record low, and the largest rounds took close to two-thirds of all capital. The number of active investors fell, late-stage investors most of all. Funds that led 2022 and 2023 Series A rounds often raised a first close and did not raise the rest.

For a company already operating, the figures below describe a market in which the next priced round is not a reliable plan. The sections that follow show what companies did instead.

Stage 3Prove: the gap between Series A and Series B is where companies stall

The step from Series A to Series B used to take about two years. It now takes close to three, and far fewer companies make it. For hard tech the path to commercial readiness has lengthened too, with more rounds and more years needed and a smaller share of companies arriving. The round that follows is priced on commercial evidence generated in between.

Stage 4Sell: the buyer changed, and demand moved

Three things happened to the climate tech buyer. The sustainability lead stopped being the decision-maker; finance, legal, procurement and operations joined the process. Banks and governments withdrew while corporates stayed, which makes the industrial strategic the most reliable customer, partner and acquirer. And demand concentrated in energy, grid, storage and power for data centers, which is where a company's category has to be defined if it wants a budget to sell into.

Buying behavior changed with it. Buyers now start with an AI summary of what is public about a vendor and end with a sales rep who confirms it.

Stage 5Run: operate on the cash you have

The companies that survived 2025 cut burn, raised margins and extended runway without a round. Median runway for the smallest companies fell to eleven months, which leaves no room for marketing that cannot show up in pipeline inside that window. There is no public benchmark for climate tech marketing spend, sales cycle length or channel performance; the Gartner figure below is the closest cross-industry reference and is drawn mostly from companies far larger than the ones this page is written for.

Stage 6Exit: acquisitions, mostly small, mostly by incumbents

Exits held near record levels in 2025 and the first half of 2026 was the most active six months since 2021. Nearly all of them were acquisitions. Oil majors made none; incumbents bought small bolt-ons. The implication for a company at $5M to $100M is that the buyer it is selling to today is also its most likely acquirer, and that looking like a product line an incumbent is missing is a positioning decision made years before the deal.

What the numbers mean at your stage

The same data reads differently depending on where a company sits. Three short reads follow.

How this page was built

Every figure comes from a primary report or the publisher's own release, and each is linked. Where the only accessible version is a secondary summary, the link is flagged. Survey-based figures carry their sample size and field dates where the publisher gives them. Figures from vendors with a commercial interest in the finding are noted. Numbers that could not be traced to a document are left out. The page was last updated in October 2026 and is revised when a source publishes new data.

Questions

Is there a benchmark for climate tech marketing spend?

Not a public one. The nearest reference is Gartner's 7.8% of revenue across industries, drawn mostly from companies over $1B. That is why the benchmark survey below exists.

Why is there so much funding data on a marketing page?

Because in 2026 the round is priced on commercial evidence, and commercial evidence is what marketing produces between rounds. The capital numbers set the clock marketing works against.

What is the commercial gap?

What separates a company that has demonstrated its technology from one that can sell it repeatedly: a chosen segment, a buyer who can be named, a sales cycle that is measured, and revenue that can carry the company between rounds. Most climate companies close the technical gap first and discover the commercial one afterward.

How often is this updated?

When the underlying reports update. Most of the sources above publish annually or quarterly; the page carries the date of its last revision at the top.