Best Energy Tech Companies in Cape Town, South Africa
The 35 best Energy Tech companies in Cape Town, South Africa in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Cloudline.
Our analysis of 287 Energy Tech companies
$109.4b in tracked funding; 82% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy Tech companies in Cape Town
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Cloudline Operator of a platform providing cloud computing and data storage | $6M | 33 mo ago | Seed | Spencer Horne Founder | 2017 | WebflowYouTubeGSAP+17 | — |
| 2 | Open Access Energy Renewable energy management software | $750K | 15 mo ago | Seed | Christoff Albertyn Co-Founder & CTO | 2021 | — | — |
| 3 | Plentify Provider of SaaS-driven and AI grid optimisers for building management | $150K | 10 mo ago | Series A | Kailas Nair Co-Founder | 2008 | Cart FunctionalityWooCommerceWordPress+36 | — |
| 4 | Solid Insight Meter monitoring in buildings | $19K | 118 mo ago | Deadpooled | Tyrone Wilson Co-Founder | 2013 | — | — |
| 5 | 4Ward Design Provider for project management services for building automation system upgrades | — | — | Unfunded | Darryl Katz Founder | 2003 | — | — |
| 6 | Balancell Battery Management Solution developers | — | — | Funding Raised | — | 2013 | WordPressMySQLPHP+23 | — |
| 7 | Bloodhound Field service management application | — | — | Acquired | John Holmes Founder | 2006 | — | — |
| 8 | Ekoguru System to save power usage and check solar array sizing for residential use | — | — | Unfunded | Wynand Goosen Founder | 2014 | — | — |
Top 4 Energy Tech companies in Cape Town
#1
Seed · Cape Town, Western Cape · founded 2021$750Kraised▾
Renewable energy management software. It is a software platform that streamlines energy transactions from generation to consumption. The platform automates the matching of generation and consumption loads, enabling energy trading and management. It enables municipalities and utilities to access smart meters to collect and interpret data to bill customers.
- Jun 2025Seed$1.8M
- Aug 2024Seed$750K
#2
Series A · Cape Town, Western Cape · founded 2008 · 42 employees$150Kraised▾
Provider of SaaS-driven and AI grid optimizers for building management. Its device can be attached to home water heaters that use AI to match users' energy needs in the grid. The platform provides solutions for industries that include property companies and body corporates, solar and battery companies, utilities and municipalities, and more.
- Nov 2025Series A—
- Jul 2024Series A—
- Oct 2023Series A—
- May 2023Grant (prize money)—
#3
Seed · Cape Town, Western Cape · founded 2017 · 18 employees$6Mraised▾
Operator of a platform providing cloud computing and data storage. It offers solutions for managing and processing information. The platform provides tools for data analysis and application development. It facilitates secure data management and scalable computing resources.
- Dec 2023Seed$6M
- Jul 2019Grant (prize money)—
#4
Deadpooled · Cape Town, Western Cape · founded 2013$18.8Kraised▾
Solid Insight is a web-based application that promotes awareness of the energy use in buildings by integrating Solid Insight into building’s smart metering systems for electricity and water. It provides a live metering interface for display in building foyers and publically online, as well as bespoke building websites where applicable users guides and other desired information (such as developer details and notable building features) are accessible. It also offers an admin dashboard where users can link any SCADA metering systems installed in the building to the database and manage their live metering charts.
- Nov 2016Grant (prize money)$18.8K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Grid Energy Storage is moving in South Africa
A read on the academic research around Grid Energy Storage — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 393 South Africa-affiliated papers.
- University of Johannesburg85
- Tshwane University of Technology52
- University of South Africa48
- Stellenbosch University29
- Cape Peninsula University of Technology27
- Renewable energy1→11
- Microgrid1→4
- Energy management1→4
- Battery (electricity)1→55
- Automotive engineering1→27
- Electrolyte1→9
- Sizing1→8
- Renewable energy20
- Battery (electricity)8
- Hydrogen storage7
- Electricity7
- Supercapacitor4
Where energy storage is researched across South Africa
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.