Flexion Energy
Flexion Energy (ion Ventures) is a UK-based clean energy infrastructure developer that originates, builds, and operates utility-scale Battery Energy Storage Systems and Solar PV assets across the UK, Europe, South Asia, and Southeast Asia, serving utilities, grid operators, and institutional infrastructure investors.
- Company typePrivate
- Founded2014
- HeadquartersLondon, United Kingdom
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Flexion Energy does
Flexion Energy (legal entity: ion Ventures) is a UK-headquartered clean energy infrastructure platform that develops, builds, and operates utility-scale Battery Energy Storage Systems (BESS) and Solar PV assets. The company positions itself as a bridge between project development and project finance, offering in-house capabilities across the full asset lifecycle — from early-stage site origination and permitting through construction management to long-term operations and asset management. Its portfolio spans 1,604 MW of pipeline across four regions: UK & Ireland (334 MW, including 271 MW ready-to-build), Europe (666 MW early-stage in Romania), South Asia (665 MW in Bangladesh, anchored by a 130 MW Solar PV plus 40 MW BESS project), and Southeast Asia (246 MW in Indonesia).
The commercial model combines three revenue streams: one-time asset development and sale proceeds when projects reach ready-to-build or commercial operation; recurring asset operations and management income from long-term optimization and grid services; and project finance structuring fees that connect institutional capital to bankable clean energy infrastructure. Customer engagement is multi-stakeholder — landowners provide sites, grid operators and utilities offtake flexibility and balancing services, and infrastructure investors acquire completed assets. The company was founded in 2014, maintains a deliberately lean 1–10 person team, and is privately held, with $206.9M raised in 2021 from GLIL Infrastructure. The 2024 Deloitte UK Technology Fast 50 ranking (#19 overall, #4 Cleantech) and the co-founder's appointment as Chair of the Global Solar Council Finance Task Force indicate external validation of growth and ecosystem positioning.
Flexion Energy firmographics
Firmographics- Name
- Flexion Energy
- Legal name
- ion Ventures
- Website
- https://flexion.energy
- Company type
- Private
- Founded year
- 2014
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Flexion Energy (ion Ventures) is a UK-based clean energy infrastructure developer that originates, builds, and operates utility-scale Battery Energy Storage Systems and Solar PV assets across the UK, Europe, South Asia, and Southeast Asia, serving utilities, grid operators, and institutional infrastructure investors.
- Ownership category
- akta.pro rank
Flexion Energy industry classification
Industry- Product category
- Energy Storage Infrastructure
- NAICS
- Electric Power Generation (22111), Solar Electric Power Generation (221114)
- SIC
- Electric & Other Services Combined (4931)
- akta.pro primary industry
- Utility-Scale BESS Project Development & Ownership (IPP/Developer) (EUAFAAAA)
- akta.pro secondary industries
- Renewables + Storage Hybrid Plant Controller & Co-Optimization (Solar/Wind + BESS) (EUAFAKAF), BESS Operations, Maintenance & Asset Performance Management (APM) (EUAFAAAG), Ancillary Services Aggregation & Bidding Optimization (DER/VPP participation) (EUAFALAJ)
Keywords
Where Flexion Energy is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Flexion Energy business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Infrastructure, Supply Chain, Technology or R&D, Personnel, Operations
Revenue model
- Asset Development and Sale: Developing renewable energy and storage projects from early-stage through to ready-to-build status, then either operating for long-term revenue or selling completed assets to investors
- Asset Operations and Management: Long-term operation and optimization of energy storage and renewable generation assets for sustained energy production and grid services revenue
- Project Finance Structuring: Bringing together project finance, structuring and governance expertise to unlock capital for clean energy infrastructure projects
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
Flexion Energy product offering
Product offeringCore offering
Flexion Energy (operating as ion Ventures) develops, builds, and operates utility-scale Battery Energy Storage Systems (BESS) and Solar PV renewable generation assets that deliver grid flexibility services. The company bridges the gap between energy project development and infrastructure finance by combining in-house technical, operational, and project finance expertise to deliver bankable clean energy assets across UK & Ireland, Europe, South Asia, and Southeast Asia.
Product overview
Flexion Energy (ion Ventures) operates as a unified clean energy platform offering three interconnected core products: Energy Storage, Renewable Generation, and Grid Flexibility. These solutions work together to deliver comprehensive clean energy infrastructure—the company's Battery Energy Storage Systems (BESS) store excess renewable energy and provide grid stability services, while their Solar PV renewable generation assets create clean power that feeds into storage and flexibility solutions. The company develops, builds, and operates assets across multiple regions, providing integrated project delivery from development through construction to operations.
Differentiator
Problem solved
Functional benefit
Products and services
- Energy Storage
Quantifiable outcome
- 662 MW in early-stage development across Europe
- +3 more outcomes
Companies that use Flexion Energy
Customer profileSegments3 records
Ideal customer profiles2 records
Flexion Energy technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Flexion Energy partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered minor and core.
- Energy UKminorMember of Energy UK, a trade association for the UK energy industry. This membership supports industry advocacy and networking within the UK energy sector.
- Rural Electric CooperativeminorMember of Rural Electric Cooperative, an organization representing electric cooperatives. This membership supports engagement with rural energy providers and cooperative utilities.
- Global Solar CouncilcoreMember of the Global Solar Council. The company's Co-founder and Director has been appointed as Chair of the Global Solar Council Finance Task Force, indicating a strategic role in shaping solar energy finance globally.
Scale indicators4 records
Recent moves6 records
Expansion highlights5 records
Flexion Energy competitors and assessment
Company assessmentDirect peers
- Zenobe Energy: UK-headquartered BESS developer and operator focused on grid-scale battery storage and EV fleet electrification, competing directly with Flexion in UK and European BESS project development.
- Harmony Energy: UK-based developer and operator of utility-scale battery energy storage projects with a multi-hundred MW pipeline across the UK and into European markets, a close comparable in scope and geography.
- Penso Power: UK-based BESS developer focused on utility-scale battery storage assets with significant ready-to-build and operational capacity in the UK, directly comparable in business model and geography.
Broad incumbents
- Lightsource bp: Global utility-scale solar developer with growing co-located BESS offering, operating across UK, Europe, US, Australia and India; larger and more diversified but competes in the same solar+storage development space.
- EDF Renewables: Subsidiary of EDF Group developing utility-scale renewable and storage projects globally including in UK and emerging markets; a much larger incumbent competing for the same offtakers, land, and interconnection capacity.
- NextEra Energy Resources: World's largest generator of renewable energy from wind and solar with a growing utility-scale BESS portfolio; sets competitive benchmarks for capital cost and offtake terms.
- Statkraft: State-owned European renewable energy IPP with growing battery storage activities in UK and continental Europe; competes for similar grid-scale projects and ancillary services contracts.
Emerging players
- Gore Street Energy Fund: London-listed investment fund focused on revenue-generating UK and international BESS assets; both an investor in and competitor to Flexion-style developers for ready-to-build projects.
- Copenhagen Infrastructure Partners (CIP): Global fund manager focused on energy infrastructure including utility-scale storage and renewables in Europe and emerging markets; invests in similar projects and increasingly develops them directly.
Regional players
- Sun King (formerly Greenlight Planet): Solar energy provider focused on off-grid and emerging-market electrification, particularly South Asia and Sub-Saharan Africa; overlaps thematically but operates in distributed rather than utility-scale segment.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Flexion Energy social profiles
Digital presenceFlexion Energy financial estimates
Financial estimateRevenue estimate
Valuation estimate
Flexion Energy leadership team
Management profileNumber of profiles
Profiles2 records
Flexion Energy funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Flexion Energy M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Flexion Energy
What does Flexion Energy do?
Flexion Energy (operating as ion Ventures) develops, builds, and operates utility-scale Battery Energy Storage Systems (BESS) and Solar PV renewable generation assets that deliver grid flexibility services. The company bridges the gap between energy project development and infrastructure finance by combining in-house technical, operational, and project finance expertise to deliver bankable clean energy assets across UK & Ireland, Europe, South Asia, and Southeast Asia.
Is Flexion Energy a public or private company?
Flexion Energy is a private company. It is classified as venture growth investor backed and is currently operating.
When was Flexion Energy founded?
Flexion Energy was founded in 2014. It employs 1 to 10 people.
Where is Flexion Energy based?
Flexion Energy is headquartered in London, United Kingdom, in the Europe region.
How does Flexion Energy make money?
Three revenue lines are on record. Asset Development and Sale is the primary driver. The others are asset Operations and Management and project Finance Structuring.
Who are Flexion Energy's main competitors?
Direct peers on record are Zenobe Energy, Harmony Energy and Penso Power. Broad incumbents are Lightsource bp, EDF Renewables, NextEra Energy Resources and Statkraft. Emerging players are Gore Street Energy Fund and Copenhagen Infrastructure Partners (CIP). Sun King (formerly Greenlight Planet) is listed as a regional player.
Does Flexion Energy have an API?
No public API is recorded for Flexion Energy.
What industry is Flexion Energy in?
Flexion Energy's product category is Energy Storage Infrastructure. Its primary akta.pro industry code is EUAFAAAA, Utility-Scale BESS Project Development & Ownership (IPP/Developer), with a secondary code of EUAFAKAF, Renewables + Storage Hybrid Plant Controller & Co-Optimization (Solar/Wind + BESS). Its NAICS code is 22111 and its SIC code is 4931.