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Boldr raises $5M in a pre-Series A round led by Unconventional Ventures to enhance its home energy management technology.

PRIVATEAug 24, 2026

Amount Raised

$5 Million

Round Type

Pre-Series A

LondonEnergyRenewable Energy

Investors

Roxbury Asset ManagementDavidovs Venture CollectiveTetard VenturesAda VenturesProsegurTechstarsInclimo Climate Tech FundS20 FundUnconventional Ventures

Description

UK startup Boldr has secured $5 million in a pre-Series A funding round to develop its technology that connects residential energy equipment to the grid. The round was led by Unconventional Ventures, with support from several strategic investors. This funding follows a previous oversubscribed seed round amounting to $3.2 million. Boldr aims to work with HVAC contractors to transform how homes can serve as energy capacities.

Quick answer

Boldr raised $5 Million in a Pre-Series A round, dated August 24, 2026. Investors: Roxbury Asset Management, Davidovs Venture Collective, Tetard Ventures, Ada Ventures, Prosegur, Techstars, Inclimo Climate Tech Fund and S20 Fund. Boldr is based in London, England, United Kingdom.

How much did Boldr raise?
Boldr raised $5 Million in a Pre-Series A round on August 24, 2026.
Who invested in Boldr?
Roxbury Asset Management, Davidovs Venture Collective, Tetard Ventures, Ada Ventures, Prosegur, Techstars, Inclimo Climate Tech Fund and S20 Fund are named as investors in this round.
What does Boldr do?
Boldr is a London-based energy tech company focused on transforming homes into active participants in the power grid.
Where is Boldr based and how big is it?
Boldr is based in London, England, United Kingdom. Fundz records about 36 employees.
Who are the decision-makers at Boldr?
Fundz holds 1 contact at Boldr. Names and contact details are shown to Fundz members.

Source: Fundz verified event record.

Who else raised in Energy and Renewable Energy around the same time

Companies in the same sectors as Boldr that raised within 45 days of this round, from Fundz verified event records.

  • Helical Fusion raised $21M (Series B) on October 8, 2026.
  • Zelestra raised $350M (Debt Financing) on October 7, 2026.
  • Southern Diesel Delivery Company raised $2M (Debt Financing) on October 6, 2026.
  • Outer Spaces raised $8M (Pre-Seed) on October 6, 2026.
  • Blaze Energy raised $6.5M on October 6, 2026.
  • Type One Energy raised $200M on October 6, 2026.

Who to call at Boldr, and when

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Company Information

Company

Boldr

Location

London, England, United Kingdom

About

Boldr is a London-based energy tech company focused on transforming homes into active participants in the power grid. The company creates smart heating and cooling products along with a companion app to automate climate control, manage bills, and support grid savings. By leveraging existing HVAC systems and integrating with EVs and solar, Boldr aims to provide households with capacity to supply back to the grid while optimizing energy use. Their goal is to reduce costs for homeowners and assist grid operators amidst rising energy demand.

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