What is Mixergy?
Founded in 2014 by Peter Armstrong and Ren Kang following their doctoral research at Oxford University, Mixergy has evolved from an academic concept into a commercial powerhouse. The company specializes in internet-connected, smart hot water tanks designed to mitigate the significant energy inefficiencies inherent in traditional domestic heating systems. By integrating sophisticated software with hardware innovation, Mixergy provides users with granular control over their energy consumption, effectively reducing waste and enabling value-add services that align with modern smart-home ecosystems. With a team of 17 professionals and strategic partnerships with major installers like British Gas, the company is effectively disrupting a legacy industry that has historically lacked technological advancement.
How much funding has Mixergy raised?
Mixergy has raised a total of $28.7M across 3 funding rounds:
Other Financing Round
$2.1M
Other Financing Round
$11.3M
Other Financing Round
$15.3M
Other Financing Round (2019): $2.1M with participation from Foresight Group and Williams Advanced Engineering
Other Financing Round (2023): $11.3M led by EDP Ventures and Nesta
Other Financing Round (2025): $15.3M supported by Barclays
Key Investors in Mixergy
Barclays
Barclays PLC is a British multinational universal bank providing a wide range of financial services globally, with a strong focus on digital innovation and sustainable finance.
EDP Ventures
The corporate venture arm of EDP group, focusing on early-stage investments in renewable power, energy efficiency, and smart grid technologies.
Nesta
An independent innovation foundation that supports bold ideas and research to solve pressing societal challenges through experimentation and strategic funding.
What's next for Mixergy?
With the support of this major enterprise-level funding, Mixergy is well-positioned to transition from a scaling startup to a dominant player in the smart energy sector. The strategic focus will likely center on deepening its integration with smart grid technologies and expanding its market reach to address the growing global demand for energy-efficient residential infrastructure. By capitalizing on its unique intellectual property and established industry relationships, the company is set to drive further innovation in the clean tech space, potentially setting new standards for domestic energy consumption and grid stability. Future efforts will likely prioritize the scaling of its manufacturing capabilities and the enhancement of its digital service platform to ensure long-term market leadership.
See full Mixergy company page
