Ernst Sack
Director @ Demex
London, United Kingdom
Ernst Sack is a Series A investor at Demex in London focused on Software and Analytics. Ernst Theodor Sack is based out of Jackson, Wyoming and is the co-founder and Director of Deep Green Solar & Partner of Blue Bear Capital. Ernst previously worked at Riverstone Holdings as a Principal. Ernst Theodor Sack attended the Columbia Business School.
- Total investments:
- 27
- Last investment:
- Lead investor:
- 33%
Last updated:
For AI agents: llms.txt
Industries Ernst Sack invests in
SoftwareAnalyticsInternet of ThingsInformation TechnologyArtificial Intelligence
Stages Ernst Sack invests in
Series ASeries BSeedFunding RoundSeries C
Countries Ernst Sack invests in
United StatesCanadaNorway
Investment Focus
Industry
- Software 10 (37%)
- Analytics 4 (15%)
- Internet of Things 4 (15%)
- Information Technology 4 (15%)
- Artificial Intelligence 4 (15%)
Stage
- Series A 6 (22%)
- Series B 6 (22%)
- Seed 5 (19%)
- Funding Round 4 (15%)
- Series C 2 (7%)
Country
- United States 16 (59%)
- Canada 1 (4%)
- Norway 1 (4%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Nuclearn
|
Nuclearn is a software company delivering AI solutions for automating Nuclear Industry tasks.Nuclearn was established in 2020 by two esteemed veterans from the nuclear industry, Jerrold Vincent and Bradley Fox, driven by their passion for innovation. With backgrounds in nuclear engineering, business intelligence, and process improvement, theco-founders came together to create the industry's pioneering in-house data science team at the Palo Verde Nuclear Generating Station in 2016.Their remarkable work quickly gained recognition throughout the nuclear sector, resulting in a US-issued patent and the prestigious NEI Best of the Best, Top Innovative Practice Award in 2020. Fueled by this innovative spirit and a mission to benefit the entire nuclear power industry, Nuclearn was born to provide a safe and efficient way to automate critical processes in the field. | $10.5M / Series A / Sep 09, 2025 | |
Ocient
|
Ocient is a startup building a near-real-time database and data analytics platform for petabyte- to exabyte-scale data sets. Ocient was founded by the talent behind the largest software startup exit in Chicago’s history. Ocient is a well-funded company, with an engineering team comprised of brilliant computer scientists hailing from the world’s topuniversities and organizations. | $42.1M / Series B / Apr 22, 2025 | |
Raptor Maps
|
Raptor Maps is the leading provider of lifecycle management software for the solar industry. We support portfolio owners, asset managers, O&M providers, EPC contractors, and independent engineers with software solutions that enable organization and asset efficiency. Raptor Maps enable solar companies to increase performance, reduce costs, andstandardize & compare solar PV assets across a portfolio. | $35M / Series C / Dec 10, 2024 | |
Pioneer
|
Pioneer operates a team of experts using AI to win grants, contracts, loans, and proposals. | $2.9M / Seed / Nov 09, 2023 | |
Omnidian
|
Omnidian is a provider of comprehensive protection plans for investments in residential solar energy systems. It serves both individual homeowners and financial institutions, such as funds and third-party owners, that manage large portfolios of residential solar assets. The company's lifetime performance guarantee includes real timemonitoring, proactive service alerts and 100% covered hardware and software through a nationwide network of field service professionals, as well as a 100% guarantee on energy or plan owners will be reimbursed for energy loss.The company's mission is to protect and accelerate capital invested in the residential solar industry. Omnidian is backed by the DOE SunShot Program which accelerates the development of highly impactful solar technologies. | $25M / Venture - Series Unknown / Oct 26, 2023 | |
TruckLabs
|
TruckLabs is a trucking technology company with a mission to transform the industry through combining a first-hand understanding of trucking with technology. With more than one hundred million miles driven, we are hardware engineers, software developers and data scientists who are serious about trucking. | Series B / Aug 01, 2023 | |
Axiom Cloud
|
Axiom Cloud uses AI to solve the biggest energy and maintenance problems plaguing the underserved commercial cooling and refrigeration industry. Their first target customer segment is retail grocery. Customers pay an initial setup fee to install and configure the IoT platform onsite, along with recurring SaaS fees for one or more cloud-basedsoftware apps that run on the IoT platform.The company was founded in 2020 and is based in Oakland, California, United States. | $7.4M / Series A / Jan 18, 2023 | |
GoExpedi
|
GoExpedi is an innovative end-to-end digital supply chain and data analytics solutions company that is revolutionizing procurement and delivery of maintenance, repair, and operations (MRO) products for heavy industries.Launched in 2017 and headquartered in Houston, Texas, GoExpedi provides over 200,000 critical parts and supplies with completetransparency on price, supplier choice and availability through its digital procurement platform. The company's innovative end-to-end supply chain model with an average delivery time of 2.5 days ensures the right part, at the right time for clients in heavy industries. Staffed by experts with specialized in-market management experience and backed by patented innovative technology, GoExpedi delivers critical supplies faster, smarter and at a lower cost than traditional suppliers. | Nov 23, 2022 | |
|
GoExpedi
|
GoExpedi is an innovative end-to-end digital supply chain and data analytics solutions company that is revolutionizing procurement and delivery of maintenance, repair, and operations (MRO) products for heavy industries.Launched in 2017 and headquartered in Houston, Texas, GoExpedi provides over 200,000 critical parts and supplies with completetransparency on price, supplier choice and availability through its digital procurement platform. The company's innovative end-to-end supply chain model with an average delivery time of 2.5 days ensures the right part, at the right time for clients in heavy industries. Staffed by experts with specialized in-market management experience and backed by patented innovative technology, GoExpedi delivers critical supplies faster, smarter and at a lower cost than traditional suppliers. | $33M / Series D / Nov 23, 2022 | |
Shoreline
|
We are a fast growing B2B SaaS company providing the Shoreline Platform for simulation and data analytics to optimize and improve the development and management of renewable power plants.Shoreline’s solutions are based on internally developed simulation and optimization algorithms that streamline how operators, project developers, equipmentmanufacturers and service providers work to develop and construct new projects and manage existing assets.We are an international team with six nationalities, representation in the US, Europe, and Asia, and are now adding people to both the technical and commercial team in an exciting growth phase with venture funding from the US and Norway. | Jun 08, 2022 | |
| See all 27 investments → | |||
Co-Investors
Congruent Ventures
6 deals together
Activate Capital Partners
3 deals together
Bowery Capital
3 deals together
BP Ventures
3 deals together
Buoyant Ventures
3 deals together
Crosslink Capital
3 deals together
About Demex
The Demex Group is a technology company that customizes and delivers climate-resilience through financial risk solutions on a global scale.
Demex Contacts
| Name | Phone | Socials | |
|---|---|---|---|
|
Hank Hattemer
Director
|
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Hank Hattemer
Director
|
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|
Edward Byrns
Founder, Chief Executive Officer & President
|
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|
Ernst Sack
Director
|
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Stephen Bennett
Co-Founder
|
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FAQ
What does Ernst Sack invest in?
Ernst Sack invests primarily in Software, Analytics and Internet of Things startups, most often at Series A and Series B stage. Most of the 27 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
When did Ernst Sack last invest?
The most recent investment recorded for Ernst Sack closed in Sep 2025. Shizune tracks 27 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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