What Flower does

Flower (formerly Krafthem, founded 2020, headquartered in Stockholm) is an AI-powered energy asset optimization and trading platform that commercializes flexible electricity assets across Nordic and European energy markets. Its proprietary Power Refinery Platform and Multi-Market Optimization engine control, optimize, and trade battery energy storage systems, wind and solar farms, EV charging infrastructure, and residential distributed energy resources simultaneously across ancillary services (FCR-N, FCR-D, mFRR), wholesale day-ahead, and intraday markets, with tariff-aware forecasting algorithms that adapt to weather, grid conditions, market depth, and asset parameters. Flower operates as an approved Balance Responsible Party in Sweden, Germany (Amprion and 50 Hertz), Netherlands (Tennet), and Finland (Fingrid), enabling direct market access without intermediary trading desks.

The company generates revenue through five primary streams: per-MW trading and optimization fees on BESS assets (Q1 2026 net revenue of EUR 10,800/MW with EUR 8,300/MW average profit), transaction-based PPA offtake and resale (notably a 180 GWh/year agreement with Locus Energy), long-term virtual Flexibility Purchase or tolling agreements (seven-year ENGIE contract covering 126 MW effective January 2029), subscription-based Flower Hub service for residential battery owners (fixed monthly compensation per kW plus a no-fee hourly spot electricity contract), and project-level capital deployment backed by a SEK 700M senior secured bond. Flower distributes through direct enterprise sales for utility-scale BESS and PPA customers, certified installer and distributor networks (Senergia, KP Energy) for residential customers, and API-based OEM integrations with hardware manufacturers (Polarium, Huawei, SAJ, Sungrow) and platforms (Monta, Flexecharge). Key customers include ENGIE, Ellevio Energy Solutions, Locus Energy, Volkswagen's Elli, Nuvve, CCE, Polarium, Monta, and Kungälv Municipality, with a growing distributed residential user base in Sweden.

Name

Flower

Legal name

Flower Infrastructure Technologies AB

Website

https://flower.se

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

1–10 employees

Short description

Flower operates an AI-powered optimization and trading platform that commercializes flexible energy assets (BESS, wind, solar, EV chargers, residential batteries) across Nordic and European energy markets as an approved Balance Responsible Party in four countries.

Ownership category

akta.pro rank

Headquarters

HQ city

Stockholm

HQ country

Sweden

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. BESS Trading & Optimization Services: Flower trades and optimizes its own battery assets and partner BESS assets across multiple energy markets (ancillary services: FCR-N, FCR-D, mFRR; capacity markets; wholesale day-ahead and intraday). Revenue is generated through the spread between market prices and grid costs. Flower earns fees for managing partner assets while retaining optimization performance risk. Partner Q1 2026 trading metrics: Net revenue EUR 10,800/MW (energy markets EUR 1,600 + capacity markets EUR 9,200), grid costs EUR -2,500/MW, average profit EUR 8,300/MW.
2. PPA (Power Purchase Agreement) Solutions: Flower acts as offtaker for renewable power producers, acquiring wind power via physical pay-as-produced PPAs (180 GWh/year from Locus Energy). Flower uses its flexible portfolio and technology to manage profile risk, then resells power or delivers next-generation PPAs to industrial consumers. Revenue derived from arbitrage between PPA purchase price and sale to end consumers.
3. Flexibility Purchase Agreements (Tolling Agreements): Long-term (7-year) virtual Flexibility Purchase Agreements with utilities like ENGIE, providing long-term access to BESS capacity. ENGIE agreement covers 126 MW across two German projects (Hamburg 100 MW + Döllnitz 63 MW), effective January 2029. Enables financing, deployment, and commercialization of battery assets.
4. Flower Hub (Residential DER Flexibility): Homeowners with residential batteries connect via Flower Hub service and receive monthly fixed compensation for grid balancing contributions. Compensation tiers: Huawei inverters 55 kr/kW/month (May 2026). Revenue shared with installation and distribution partners. Also generates electricity retail revenue through bundled elavtal (hourly spot price + 3.99 öre/kWh markup, no monthly fee).
5. Bond Issuance & Project Financing: Flower raised SEK 700 million (~EUR 60 million) via a 3-year senior secured bond in Q1 2026 to refinance the platform and support European expansion. Proceeds fund development of battery storage infrastructure across Europe.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

Flower operates an AI-powered optimization and trading platform (Power Refinery Platform) that controls, optimizes, and commercializes flexible energy assets including grid-scale battery energy storage systems (BESS), wind and solar farms, and EV charging infrastructure across multiple European energy markets. As an approved Balance Responsible Party (BRP) in Sweden, Germany, the Netherlands, and Finland, Flower trades flexibility across ancillary services (FCR-N, FCR-D, mFRR), capacity, day-ahead, and intraday markets to maximize asset revenues for BESS owners, renewable producers, utilities, and residential battery owners.

Product overview

Flower offers an AI-powered energy asset optimization and trading platform that operates across multiple market segments. The core offering consists of the optimization platform for trading and managing flexible energy assets including grid-scale BESS, renewable energy farms, and distributed energy resources. Key products include: (1) Grid-Scale BESS Optimization for utility-scale battery systems; (2) Flower Hub for residential home battery optimization; (3) Green Baseload for stable renewable power supply; (4) Wind/Solar Power Optimization for renewable asset trading; (5) Demand Response for grid flexibility; (6) DER Optimization for cloud-based management of distributed assets; and (7) PPA Solutions for next-generation renewable energy agreements. The platform uses AI and machine learning to optimize assets across FCR, mFRR, day-ahead, and intraday markets, providing comprehensive energy market access through BRP services.

Differentiator

Problem solved

Functional benefit

Brands

• Flower Hub: Home battery optimization service allowing homeowners with residential batteries to support the electricity grid and earn extra income through flexibility services.

Products and services

• Grid-Scale BESS Optimization Optimization and trading of large-scale battery energy storage systems (BESS) for grid-scale energy storage, ancillary services, and wholesale market participation. Designed for utility-scale BESS asset owners across Sweden, Germany, Finland, Netherlands, France, and Belgium.
• Flower Hub Residential home battery optimization service enabling Swedish homeowners with solar panels and home batteries to participate in grid balancing, earn extra income through fixed monthly compensation (e.g., 55 kr/kW/month for Huawei inverters), and access flexible electricity contracts based on hourly Nord Pool spot prices without monthly fees.
• Green Baseload

Quantifiable outcome

• Pro forma revenue growth of 82% YoY in Q1 2026 (SEK 35.7M vs SEK 19.6M in Q1 2025)
• +6 more outcomes

Named customers7 records

Segments6 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration8 records

AI capability5 records

Feature6 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• ENGIEcoreStrategic or Co-development Partner · 22 June 2026Seven-year virtual Flexibility Purchase Agreement covering 126 MW of BESS capacity in Germany (Hamburg 100 MW/400 MWh + Döllnitz 63 MW/257 MWh), effective January 1, 2029. Combines Flower's asset portfolio and optimization technology with ENGIE's advanced risk management and structuring expertise to scale battery storage deployment in Germany's flexibility market.
• Global Energy GroupminorStrategic or Co-development Partner · 22 June 2026Battery flexibility agreement with Global Energy Group covering 126 MW of battery capacity, representing a new commercial model for Flower combining long-term partnerships with continued portfolio growth.
• PolariumcoreTechnology or Integration · 1 April 2026Cloud-based API integration of Flower's optimization into Polarium HomeBattery, enabling homeowners to access energy markets for revenue without additional hardware. First step in expanding to DER optimization.
• Volkswagen's EllicoreStrategic or Co-development Partner · 10 March 2026Launch of large-scale BESS projects in Germany and Sweden totaling nearly 400 MWh under own-and-operate models. Elli commissioned its first operational 20 MW/40 MWh BESS in Salzgitter using PowerCo cells.
• NuvvecoreStrategic or Co-development Partner · 10 March 2026Partnership for 1 GW deployment pipeline starting with a 50 MW/75 MWh project in Sweden. Nuvve partnered with Omnia Global for the pipeline.
• CCE (Clever Consulting Energy)coreStrategic or Co-development Partner · 1 March 2026Share purchase agreement for acquisition of 63 MW/257 MWh Ready-to-Build BESS project in Döllnitz, Saxony-Anhalt, Germany. CCE developed the project and divests it to Flower. CCE is established as a strategic partner in Flower's European growth.
• Locus Energy (SEB Nordic Energy portfolio)coreStrategic or Co-development Partner · 1 April 2025180 GWh/year PPA offtake from 11 onshore wind farms across Swedish price regions SE2, SE3, and SE4. Serves as foundation for Flower's next-generation PPA solution. Largest wind farm generates 65 GWh/year.
• MontacoreTechnology or Integration · 1 January 2023EV charging optimization partnership enabling Monta's charge points to participate in Danish FCR-D market. Monta's portfolio grew over 60x under the partnership. Flower was first optimizer to successfully trade EV chargers on FCR-D market in Sweden.
• Ellevio Energy SolutionscoreStrategic or Co-development Partner · 1 January 2023BESS optimization and development partnership. Ellevio awarded Flower the contract to optimize Grums 10 MW BESS and subsequently developed three additional battery projects together. Flower identified as experts in maximizing battery system potential.
• Senergia (Sweden)minorChannel Partner/ Reseller/ DistributorDistribution partner for Flower Hub in Sweden, offering sales information about the Flower x Senergia offering.
• KP EnergyminorChannel Partner/ Reseller/ DistributorDistribution partner for Flower Hub certification and installation partner recruitment in Sweden.

Scale indicators11 records

Recent moves8 records

Expansion highlights7 records

Direct peers

• Flexitricity: UK-based demand-side response and flexibility optimization provider serving BESS, industrial, and DER customers across Great Britain. Closely comparable to Flower in offering multi-market optimization of flexible assets for ancillary services and balancing, though UK-focused.
• Origami Energy: UK flexibility platform providing optimization, aggregation, and trading of distributed energy resources and BESS assets to grid services markets. Comparable technology stack and customer base to Flower's UK/Nordic BESS optimization offering.
• Piclo: UK-based flexibility marketplace matching DER providers with ancillary services and capacity market buyers across UK and Ireland. Comparable in serving the same flexibility aggregation use case, though operates more as a marketplace than direct optimizer.
• Pexapark: Swiss-based renewable energy PPA pricing, risk management, and offtake optimization platform. Highly comparable to Flower's PPA solutions business, particularly the Locus Energy offtake and next-generation PPA product.
• gridX: German energy management platform for DERs, EV chargers, and heat pumps with cloud-based optimization. Comparable to Flower's DER optimization and Flower Hub residential product, with strong DACH presence.
• Stem Inc: US-listed AI-driven energy storage optimization and trading platform serving commercial/industrial and utility-scale battery customers. Closely comparable in using AI to optimize battery dispatch across multiple revenue streams, though US-focused.

Emerging players

• Modo Energy: Energy market analytics and optimization platform focused on battery storage revenue stack analysis. Comparable in targeting the BESS optimization opportunity, though primarily an analytics/data layer rather than a direct asset optimizer.

Broad incumbents

• Statkraft: Europe's largest renewable energy generator and a leading flexibility trader across Nordic and European markets. Competes with Flower in BESS optimization and ancillary services, though as part of a much broader portfolio across multiple geographies.
• Sonnen (Shell): Residential battery and virtual power plant operator now owned by Shell, providing aggregated home battery services across European markets. Comparable to Flower Hub residential DER aggregation model, but with global balance-sheet backing.
• EDF Energy / EDF Flex: UK/European utility with significant BESS and flexibility trading operations including flexibility purchase agreements. Comparable as both a potential counterparty (similar to Flower's ENGIE deal) and a competitor in optimization and PPA structuring.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/krafthem

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Subsidiaries2 records

Funding overview

Funding rounds5 records

Investors7 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Flower