LumenStream

Private

BelfastEnergy & Sustainabilityhttps://www.lumenstream.com/

Last Round

VC Round

Jul 8, 2025

Total Funding Raised

$7M

Company Overview

LumenStream is a cleantech company that provides 'Lighting as a Service' to enable businesses to upgrade to energy-efficient LED technology with no upfront capital expenditure.

Sector

Energy & Sustainability

Verticals

Energy Management, Smart Buildings, Facility Management, Green Building

Business Model

B2B

Customer Profile

Hardware + Subscription, Services & Consulting

AI Layer

Non-AI

Keywords

lighting as a serviceLaaSLED lighting upgradeszero CapEx modelenergy as a servicepay as you saveEaaScommercial lightingindustrial lightinglighting subscriptionturnkey lighting projectsenergy savingsclimate techcarbon reductionsmart lighting controlsinfrastructure rectification

Historical Pricing

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Caplight Momentum Score

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LumenStream Comps

Public and private peers based on sector, stage, and business model.

LumenStream comps — public and private peers by sector, stage, and business model
Company	Status	Est. Valuation	Rev Multiple
OpenAI	Private	$86.0B	~40x
Cohere	Private	$5.0B	--
Competitor 1	Public	$XX.XB	XXx
Competitor 2	Public	$XX.XB	XXx

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LumenStream Funding Rounds

Historical fundraising activity

Data table
Round	Date	Amount Raised	Valuation	Investors	Sources
VC Round	Jul 8, 2025
Seed	Oct 21, 2022
Debt	Mar 8, 2022

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Key People

Founding team and executive leadership

Alistair Brown

CEO

Executive Team

LumenStream Investors

Notable investors and investment history

LumenStream investors
Investor	Rounds
Aquila Capital	Debt
Clarendon Fund Managers	VC Round
Techstart Ventures	VC Round, Seed

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Market signals

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Nov 26, 2025
Added BetterCyber Consulting Group as a customer.
Sep 26, 2025
Added Silcoms Ltd, a manufacturing SMB, as a customer.

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LumenStream Filings

SEC and related filings with document metadata.

Data table
Typed	Date	Amount Offered	Amount Sold	Filling	Pages	Download
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LumenStream Filings

SEC and related filings with document metadata.

Frequently Asked Questions

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Firmographic Details

HeadquartersBelfast

Employee Range13

Year Founded2017

Last FundingJul 8, 2025

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