What Watt Energy Saver does

Watt Energy Saver is a UK specialist energy engineering company based in Ollerton, Nottinghamshire, operating since 2011 as a turnkey contractor of renewable energy systems. The company delivers design, installation, commissioning, and registration services across a broad set of renewable technologies, with solar photovoltaics as the core product line complemented by air source and ground source heat pumps, biomass boilers, combined heat and power (CHP), solar thermal, energy storage, EV charging infrastructure, generators, power factor correction, LED lighting upgrades, and energy-efficient boilers. Underlying technical capabilities include BIM-compliant RIBA stage design with REVIT integration, 3D shading analysis, drone and thermographic surveys, half-hourly data-driven PV sizing, and module-level monitoring via SolarEdge inverters integrated with site SCADA portals. The firm is MCS-certified, NICEIC-approved, SafeContractor-accredited, and SSIP-registered, enabling it to operate across regulated commercial and public-sector environments.

The company's commercial model is direct enterprise and public-sector engagement with no internal sales force — clients liaise directly with engineers. Revenue is generated through one-time turnkey project delivery (design, supply, install, commission), supplemented by recurring operation and maintenance (O&M) contracts, metering and monitoring subscriptions, professional consulting services (BIM design, Part L compliance, G99/G100 grid applications), and direct procurement of equipment from UK and European manufacturers. The company targets enterprise commercial and industrial clients, the UK public sector (including the Ministry of Justice, MoD, NHS, and local authorities), the education sector (DfE-aligned net-zero schools), construction prime contractors, warehousing and cold storage operators, and agricultural clients. Long-standing strategic construction partnerships with Willmott Dixon (since 2014), Wates Construction (since 2015), Centre Parcs UK (since 2014), Readie Construction, and McLaren Construction anchor a significant share of project flow, with notable enterprise deployments at Turners Distribution, Nestlé, Aston Martin Racing, Red Bull Racing, Microsoft, Volvo, SEGRO, DPD, Yorkshire Water, and others.

Watt Energy Saver remains a privately held, independent firm with no disclosed parent, institutional investors, or funding rounds. Its competitive positioning rests on deep UK grid-connection expertise (G99/G100 navigation, DNO export-limitation systems), an engineer-led no-sales-staff model, integrated supply chain access, and the capability to take on sites that others decline — including those turned down for grid constraints or presented with six-figure connection charges.

Name

Watt Energy Saver

Legal name

Watt Energy Saver

Website

https://wattenergysaver.co.uk

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

11–50 employees

Short description

Watt Energy Saver is a UK specialist energy engineering company designing, installing, and maintaining renewable energy systems — primarily solar PV, heat pumps, biomass, EV charging, and energy storage — for commercial, industrial, public sector, construction, and agricultural clients across the United Kingdom.

Ownership category

akta.pro rank

Product category

Renewable Energy Engineering Services

NAICS

Electric Power Generation, Transmission and Distribution (2211), Solar Electric Power Generation (221114)

SIC

Electric, Gas & Sanitary Services (4900)

akta.pro primary industry

Commissioning, Testing & Energization Services (Pre-Commissioning, Grid Code Compliance) (EUAMAFAK)

akta.pro secondary industries

Renewable Distributed Generation (Rooftop/Onsite Solar, Small Wind, Small Hydro) (EUACALAJ), Renewable Energy Asset Management (Solar/Wind/Hydro/Geothermal) (EUAEAMAB)

Keywords

• Renewable energy engineering
• Solar PV installation
• Commercial energy solutions
• Heat pump systems
• Energy efficiency services

Headquarters

HQ city

Ollerton

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. Renewable Energy System Design, Installation & Commissioning: Full turnkey solution covering design, installation, commissioning, and registration of renewable energy systems including Solar PV, heat pumps, biomass boilers, CHP, energy storage, EV charging, and energy-efficient lighting for commercial, industrial, public sector, and agricultural clients.
2. Operation & Maintenance (O&M) Services: Ongoing O&M services including best practices inspections, solar panel cleaning, drone and thermographic surveys, panel/inverter replacement, asset management, and permanent roof access for existing solar installations.
3. Monitoring Services: Metering and monitoring services using sub-metering solutions ranging from individual meters to fully automated BMS-style metering stations, with display panels for energy awareness.
4. Renewable Energy Consulting & Design Services: Specialist renewable energy consulting including BREEAM compliance, BIM design, Part L compliance, BRUKL reports, planning applications, and G99/G100 regulatory navigation.
5. Equipment Procurement & Supply Chain: Procurement of heat pumps, solar PV, biomass boilers, and other renewable equipment directly from manufacturers (UK and Europe), giving the business a strong commercial edge.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

Watt Energy Saver is a specialist energy engineering company that delivers turnkey renewable energy solutions to commercial, industrial, public sector, construction, and agricultural clients across the UK. The company manages every aspect of renewable energy projects, including BIM-compliant RIBA stage designs, 3D shading analysis, Part L compliance, structural and planning applications, and G99/G100 grid connection navigation. Core deliverables span design, installation, commissioning, and registration of solar PV systems, heat pumps, biomass boilers, energy storage, EV charging, combined heat and power (CHP), LED lighting upgrades, and ongoing operation and maintenance services.

Product overview

Watt Energy Saver is a specialist energy engineering company offering a comprehensive portfolio of renewable energy products and services. The core product portfolio centers on solar photovoltaic (PV) systems as the primary offering, complemented by a broad range of renewable technologies including air and ground source heat pumps, biomass boilers, solar thermal, combined heating & power (CHP), energy storage, electric vehicle charging infrastructure, generators, power factor correction, LED lighting upgrades, and energy efficient boiler upgrades. These products are supported by an integrated service layer comprising design services (including BIM-compliant 3D modeling and Part L compliance), G99/G100 grid connection applications, professional installation by qualified engineers, metering & monitoring solutions, operation & maintenance (O&M) services, and planning application management. The company delivers turnkey solutions across commercial, industrial, educational, healthcare, public sector, and agricultural sectors in the UK, with capabilities spanning from initial feasibility through to ongoing maintenance. Notable service add-ons include drone thermographic surveys, panel/inverter replacement, and solar panel cleaning services that maintain system efficiency.

Differentiator

Problem solved

Functional benefit

Products and services

• Solar Photovoltaics (Solar PV) Solar electricity systems that capture the sun's energy using photovoltaic cells to convert sunlight into electricity for commercial, industrial, and public sector applications. Includes ground-mounted, roof-mounted, and vertical PV arrays with SolarEdge inverters and module-level monitoring.
• Electric Vehicle Charging Installation of EV charging stations for commercial properties, integrated with solar PV and dynamic controllers to enable intelligent EV charging and reduce electrical network upgrade requirements.
• Energy Storage Battery-based energy storage solutions that store excess energy during low demand for use during peak times, increasing reliability and enabling renewable energy utilization.
• Air Source Heat Pumps (ASHP) External systems that harvest renewable low-grade energy from outdoor air and upgrade it to useful heat for hot water and space heating, achieving 3kW heating output per 1kW electricity input.
• Ground Source Heat Pumps (GSHP) Heat pump systems that extract heat from the ground through buried pipe loops to heat radiators, underfloor heating systems, and hot water year-round.
• Biomass Boilers Carbon-neutral heating systems using wood, logs, and wood pellets including pellet boilers, wood chip boilers, and log boilers for commercial and agricultural applications, delivering returns of 8-15%.
• Solar Thermal Solar water heating systems using evacuated tubes or flat plate collectors to generate hot water throughout the year, providing all hot water requirements between April and October.
• Combined Heating & Power (CHP) Cogeneration systems that simultaneously produce electrical and thermal energy with efficiencies up to 85%, delivering energy savings of 18-28% and CO2 reductions of at least 10%.
• Generators Diesel generator sets providing prime, standby, supplementary, and emergency power solutions including silenced canopied generators for various applications.
• Power Factor Correction (PFC) Electrical infrastructure solutions that improve power factor to increase efficiency of electrical equipment, reducing electricity consumption and utility costs.
• LED Lighting Upgrades Low energy lighting design and installation services that can reduce CO2 by over 40% with ROI achieved in under 2 years.
• Energy Efficient Boiler Upgrades Boiler upgrade services for natural gas, LPG, and biomass systems, with new boilers achieving seasonal efficiency up to 96%.
• Design Services Comprehensive renewable energy consulting including BIM-compliant RIBA stage designs, 3D shading analysis, energy data review, Part L compliance, BRUKL reports, and detailed tender specifications.
• G99 & G100 Grid Applications Expert navigation of UK grid connection processes including applications, export limitation systems, overcoming connection challenges, voltage rise management, and thermal capacity assessment.
• Installation Services Full turnkey installation delivered by qualified engineers with BEng/MEng qualifications, certified by recognized bodies such as the Institution of Engineering and Technology (IET).
• Metering & Monitoring Sub-metering solutions from individual meters to fully automated BMS-style metering stations with reporting capabilities for energy consumption benchmarking, delivering up to 15% energy savings.
• Operation & Maintenance (O&M) Comprehensive solar PV maintenance including inspections, panel cleaning, drone surveys, panel/inverter replacement, asset management, and permanent roof access solutions delivered as a recurring service.
• Planning Applications Full managed planning service including site suitability assessment, planning authority liaison, application management, and compliance with planning policy.

Quantifiable outcome

• CO2 reduction of over 40% achieved through LED lighting upgrades with ROI in under 2 years
• +9 more outcomes

Named customers21 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature7 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Wates ConstructioncoreStrategic or Co-development Partner · 1 January 2015Watt Energy Saver has collaborated with Wates Construction since 2015 on an extensive range of projects including office buildings, correctional facilities, parking structures, and notably Net Zero Carbon Schools. Watt Energy provides specialist solar installation as part of Wates' pioneering sustainable construction projects featuring advanced heat recovery, biosolar green roofs, and strategically placed roof-mounted photovoltaics.
• Willmott DixoncoreStrategic or Co-development Partner · 1 January 2014Watt Energy Saver has been collaborating with Willmott Dixon since 2014 delivering renewable technologies aligned with Willmott Dixon's 'Now or Never' 2030 Sustainability Strategy. Projects include IBRB at University of Warwick (178.06kWp). Watt Energy provides solar PV design and installation as an integrated partner within Willmott Dixon's construction projects, contributing to sustainability themes of 'Brilliant Buildings', 'Building Lives', and 'Better Planet'.
• Readie ConstructionminorStrategic or Co-development PartnerCollaborative delivery of solar installations across several prestigious projects. Readie Construction is committed to environmental sustainability with ISO9001 and ISO14001 accreditations. Watt Energy provides solar array design and installation as part of Readie Construction's sustainable construction initiatives, including East Horndon Business Park (1,475.01kWp) and Bedford Commercial Centre (984.75kWp).
• McLaren ConstructionminorStrategic or Co-development PartnerMcLaren Construction has committed to Net Zero Carbon by 2025 for scope 1 and 2 emissions and 2045 for scope 3. Watt Energy Saver acts as specialist renewable energy partner delivering solar PV installations integrated into McLaren's sustainable construction projects.
• CBREminorImplementation/ SI/ Consulting PartnerWatt Energy Saver worked with CBRE (global facilities management firm) on the Yorkshire Water solar PV project at Buttershaw Head Office. CBRE developed an innovative delivery mechanism, and Watt Energy installed the solar PV with roof-mounted edge protection retained for future maintenance.
• FJBminorImplementation/ SI/ Consulting PartnerWatt Energy Saver worked with Turners' incumbent consultants FJB to analyse historic data and confirm the proposed PV array would not export more than 200kWp on the Turners Soham project.
• Distribution Network Operators (DNOs)coreTechnology or IntegrationWatt Energy Saver has years of experience dealing with Distribution Network Operators (DNOs) and has a number of solutions available to enable grid connectivity. The company specialises in navigating G99 and G100 processes, overcoming high connection charges, voltage rise, thermal capacity, and fault load current challenges. Can install PV on sites formally turned down or presented with six-figure connection sums.
• SolarEdgecoreTechnology or IntegrationWatt Energy Saver uses SolarEdge inverters and optimizers in many installations, enabling dynamic module-level monitoring of arrays and integration with existing site SCADA metering portals. SolarEdge monitoring portal provides real-time performance visibility.

Scale indicators16 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Geo Green Power: UK renewable energy installer offering solar PV, biomass, and heat pumps to commercial, agricultural, and public sector clients. Directly comparable to Watt Energy Saver across multiple renewable technologies and target sectors.
• RenEnergy: UK-based renewable energy contractor specializing in commercial and industrial solar PV, biomass, and heat pump installations. Directly comparable to Watt Energy Saver in target customer base (UK commercial/industrial), product portfolio, and engineering-led delivery model.
• NuVision Energy: UK commercial solar PV EPC contractor delivering multi-MWp installations for enterprise and public sector customers. Comparable project scale and customer types to Watt Energy Saver's portfolio.
• Custom Solar: UK commercial and industrial solar PV installer delivering rooftop and ground-mount systems with grid connection expertise. Comparable in scale, customer base, and full EPC delivery model.
• EvoEnergy: UK solar PV installer focused on commercial and industrial rooftop and ground-mounted systems with strong engineering design capabilities. Closely comparable to Watt Energy Saver in project scale, target market, and turnkey solar EPC offering.

Broad incumbents

• ENGIE UK: Global energy services and renewables company with significant UK commercial solar, heat pumps, and energy services portfolio. Competes for enterprise energy contracts but operates as broad incumbent across multiple services.
• Solarcentury (Statkraft): One of the UK's largest solar PV developers and installers, now owned by Statkraft. Broader portfolio including utility-scale and commercial solar; comparable in commercial/industrial solar offering but operates at significantly larger scale with international reach.
• SSE Renewables: Large UK renewable energy developer and energy services provider. While primarily utility-scale, SSE's distributed energy and corporate solutions overlap with Watt Energy Saver's commercial solar offering.
• EDF Renewables UK: Major UK renewable energy developer and operator with significant solar and wind portfolio. Competes for large commercial and utility-scale projects but operates across broader renewable portfolio rather than specialist commercial EPC.

Emerging players

• Ecovolt: UK commercial solar PV installer serving SMEs and mid-market enterprises. Comparable commercial solar focus and target customer profile, though at smaller scale and with less complex multi-MWp project capability.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/WattEnergySaver
• Facebookfacebook.com/Watt-Energy-Saver-Ltd
• LinkedInlinkedin.com/company/watt-energy-saver

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

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 Watt Energy Saver