TerraWatch Essentials · · 6 min read

Earth Observation Essentials: October 26, 2026

The Future of the Thermal EO Market: Analysing the Strategies of Hydrosat, Constellr and SatVu

Welcome to a new edition of Earth Observation Essentials, the free biweekly newsletter from TerraWatch covering key highlights from the EO market along with exclusive insights and analysis.

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📈 EO Market Highlights

Major developments in EO

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A bit more context: The revised GeoXO programme has dropped three planned instruments: the Lightning Mapper, Ocean Color sensor and Atmospheric Composition sensor.

Commercial weather companies can increasingly supplement NOAA in areas such as microwave sounding, radio occultation and imagery. NOAA is already buying or testing data from companies such as Tomorrow.io, Spire, PlanetiQ, Muon Space, Weather Stream and several others through its new $2.35B vehicle (we analysed this in-depth weeks ago in a Pro weekly edition).

But the fact is that are no equivalent commercial replacements today for continuous geostationary lightning mapping, hourly atmospheric-composition monitoring or high-frequency ocean-colour observations.

In other words, these cuts cannot simply be offset through commercial procurement: they risk leaving genuine observation gaps in severe-weather warnings, wildfire-smoke and air-quality monitoring, and coastal/ocean hazards.
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My take: We are (finally) entering an era in EO in which satellite data providers offering different data from different sensors begin to see each other as collaborators rather than competitors.

Their overall positioning as a satellite-based solution to a problem is actually improved by joining forces rather than wrongly assuming they are cannibalising each other's markets.

We will be seeing more such partnerships between EO companies, eventually leading to acquisitions for sensor diversification.
In a recent edition of the Pro newsletter, I analysed the 10 different layers of Earth observation sovereignty and what this means for the future of EO.

Upgrade to a Pro subscription for just $75 per year to check out the analysis and receive weekly exclusive market briefings.


💡 Insight Bytes

A quick dose of analysis from TerraWatch

The following insight brief is part of the TerraWatch Pro newsletter and included here as a preview for free subscribers. To receive weekly exclusive insights and analysis, become a Pro subscriber at only $75 per year.

The Future of the Thermal EO Market: Analysing the Strategies of Hydrosat, Constellr and SatVu

Hydrosat’s recently announced a upgrade to its thermal constellation – constellr and SatVu also had recent milestones. So, it is perhaps a good time to look at the commercial thermal EO market, which, I think, is becoming a pretty broad category.

The short story is that the 3 companies are increasingly optimising for very different customer problems, the long story follows.

Three Different Bets on Thermal

First, let me refresh your memories on what the three companies are actually working on and what their roadmaps are.

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Hydrosat is pitching a persistent monitoring service: A 160–340 km swath and daily revisit make the economics work when the customer needs to watch large areas repeatedly — agricultural fields, water bodies or infrastructure corridors.

The value comes from covering more territory, more often, rather than extracting the maximum detail from any one asset.
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SatVu is proposing an activity intelligence solution: Its narrow, high-resolution MWIR imagery is most useful when the customer already knows where to look and wants to understand what an asset is doing: whether a facility is active, whether something has changed, or whether a heat signature confirms something seen in optical or SAR.

The addressable area is smaller, but the value of each observation can be much higher – similar to a very high-resolution image.
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constellr is building a temperature-driven decision tool: While the current product is built around quantitative land surface temperature, the move towards sub-5 m LWIR pushes that capability toward individual assets and defence use cases.

If it can retain measurement quality while increasing spatial detail, constellr could offer something different from simply detecting thermal activity: precise temperature-driven intelligence at asset scale.

What This Means for Commercial Thermal EO

The roadmaps of these companies means that thermal’s role could evolve and how it co-exists with optical and SAR. Wide-area thermal can act as another monitoring layer across regions, while high-resolution thermal can add behavioural or operational context to assets already identified through other sensors.

This makes the question more interesting than simply who has the highest thermal resolution or widest swath. My thesis is that thermal EO could develop as several adjacent markets rather than converge around one dominant product: persistent regional monitoring, precise temperature-drive intelligence or asset-level activity detection.

So, instead of asking whether anyone is ready to pay for thermal (they will), we should be asking which kind of thermal intelligence supports enough recurring demand to justify a constellation-scale investment. Hydrosat, constellr and SatVu are now making three different bets on that, but I think the market may prove large enough for all three rather than converge around a one thermal winner.

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🔍 Recommended Reads

Interesting links to check out

Credit: Reuters

🛰️ Scene from Space

One visual leveraging EO

Google Illegally Cuts Over 250,000 Trees for Data Centre in Finland

The Guardian recently reported that Google 'illegally' cut down over 250,000 trees across 330 hectares of forest for a new data centre in Finland, before the required environmental impact assessment was complete.

Since there was no accompanying satellite imagery with the piece, I decided to quickly use Claude to make me this gif that shows the scale of it – 330 hectares and 250,000 trees is hard for me to visualise.

The visual below clearly shows the Muhos site from July 2025 to October 2026: the forest is intact into autumn 2025 and cleared by early April 2026, followed by stripped soil and site roads.

Satellite imagery is free to use and AI makes this a 10-minute task (that’s what I did). So, I hope more media outlets start complementing stories with satellite visuals, as I think it is a lot more powerful.

Credit: Copernicus Sentinel-2

Until next time,

Aravind.

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