Premium Energy Engineering for Surrey & SW London Estates


Large properties generate large energy bills - and exceptional opportunities. We engineer whole-estate solar and battery systems, multi-vehicle EV infrastructure and intelligent electrical upgrades that help transform high-consumption homes in Kingston, Teddington, Cobham and across the Surrey borders into lower-running-cost properties built for decades of premium performance.

Large Properties Deserve Engineering at Their Scale

A five-bedroom detached home in Kingston upon Thames, a riverside estate in Teddington or a country property on the Cobham-Surrey borders carries an electrical infrastructure requirement that simply does not compare to a city terrace. You have a heated pool, a double garage, an annexe, underfloor heating across multiple zones, a wine room and a household that runs four or five vehicles simultaneously. Standard residential electrical thinking does not apply. What applies is a whole-property energy strategy - one that quantifies your peak demand, models your generation potential, right-sizes your storage and future-proofs your supply for the technology your household will adopt over the next fifteen years. That is precisely the service electricalworks by GThink Ltd delivers for premium properties across Southwest London and the Surrey borders.

Engineer and client handshake

Engineered for Maximum Return. Specified for Long-Term Performance.

The homes we work on in Kingston, Teddington and across Surrey are significant assets. Every engineering decision we make is evaluated against two criteria: does it maximise the property's energy performance today, and does it preserve optionality for the upgrades your household will want in ten years? We do not over-specify for margin or under-specify for price. We build a financially and technically coherent roadmap - load-assessed, phased where appropriate, certified to the highest standard - and then we execute it with the precision your investment demands.

Energy Engineering Services Scaled for Large Surrey & SW London Properties

Four integrated disciplines, designed to work together as a single energy system. For homes in Kingston, Teddington, Richmond, Cobham and the Surrey borders where the goal is not merely convenience - it is meaningfully lower grid reliance.

Large rooftop solar array on a detached home Large-scale solar and battery system on a country estate

High-Capacity Solar & Battery Storage for Energy-Intensive Homes

When your home runs a heated pool, underfloor heating across four hundred square metres and multiple EV chargers, a domestic-scale solar system will not move the dial. We design arrays from 10kWp to 30kWp and pair them with battery banks sized for overnight consumption and a full cloudy-weather buffer day. Generation is matched to roof azimuth, pitch and shade - not rule of thumb. Every design is anchored in your smart meter profile so projected savings and export income are credible before you commit, and cabling headroom preserves paths for panels or inverter upgrades as your loads evolve across the next decade.

Multiple EV chargers in a private garage Multiple EV chargers on a large driveway

Multi-Vehicle EV Charging for Large Driveways & Private Garages

A four-car garage merits four chargers that stagger load thoughtfully - not a solitary socket chased through with extension cabling. We deliver multi-outlet infrastructure with disciplined shared management across simultaneous vehicles, aligning charge windows with surplus solar when it stacks financially, and we specify commercial-grade protection sized for annexes or coach-house distribution branches. Estates across Cobham, Kingston or Teddington receive armoured feeders routed cleanly through grounds, commissioning packaged as one disciplined programme with annotated drawings left on site so supplementary wall-mounted units draw from retained spare ways instead of forcing a wholesale enclosure retrofit midway through ownership.

Three-phase consumer unit after a whole-house rewire High-capacity consumer unit with smart distribution

Whole-House Rewires & Three-Phase Supply Upgrades

Large estates running heated pools, aggregated heat pumps, clustered EV fleets and cinematic AV concurrently will strain a lone single-phase intake long before façade finishes dull. Engineers here script diversity-balanced studies, shepherd DNO applications only when uplift is genuinely warranted and nominate three-phase boards with purposeful spare capacity, disciplined surge tiers and inverter export allowances already harmonised laterally. Works roll through the house in phased zones so life continues upstairs while cabling containment zoning, supplementary bonding and segregation choices leave corridors ready for smart lighting backbones and automation overlays precisely when furniture returns after commissioning - not through emergency remedials.

Architectural downlights in a grand entrance hall Smart lighting controls in a living room

Architectural Lighting & Smart Control

From sculpted façade washes and arrivals courts to ballroom ceilings and kilometre-long drive borders, illumination is authored as infrastructural cabling and control strategy alongside your primary energy programme rather than pasted in after finishes close. Astronomical dusk logic, biometric entry ties and layered occupancy merge exterior path washers with softened interior palettes in synchronised moods. Commissioning validates colour rendering, glare limits and failover behaviour so gardens, elevations and salons read as a single choreography whether you host summer evenings overlooking the Thames or midwinter arrivals along sweeping Surrey laurel lines.

Why Premium Homeowners in Kingston, Richmond & Surrey Choose Us

The estates and large detached homes across Kingston upon Thames, Teddington, Cobham and the Surrey borders represent some of the most complex residential energy engineering projects in the UK. These are the capabilities that allow us to deliver them at the standard they demand.

Large-scale solar and battery system design drawing

Property-Scale Energy Modelling Before Any Specification

We do not quote from a price list. Before a single product is specified, we pull twelve months of smart meter data, map your high-load circuits (pool, heat pump, EV, underfloor), model generation potential across every usable roof plane and calculate battery sizing against both overnight demand and grid outage resilience. The output is a financial model with a realistic payback range and a technical specification your independent adviser can scrutinise. Engineering-led decisions. Not sales-led ones.

Outdoor lighting across large garden grounds

Seamless Delivery Across Large Grounds & Outbuildings

Large properties in Teddington, Cobham and Kingston frequently include detached garages, pool plant rooms, garden offices and annexes that need integrating into a single electrical and energy strategy. We coordinate armoured sub-main routing through grounds with minimal surface disruption, connect outbuildings to the main distribution system and commission all circuits as a unified installation. One project. One programme. One set of certification documents.

High-capacity three-phase consumer unit upgrade

Infrastructure That Grows With Your Household

The homes we engineer for in Kingston and Surrey are long-term assets. We specify distribution boards with genuine spare capacity, battery systems with expansion slots, EV infrastructure with sub-board headroom for additional outlets, and solar inverters with headroom for additional strings. The decisions we make today are explicitly designed to accommodate the technology your household will adopt over the next decade - without requiring a complete reinstallation to absorb them.

Premium Residential Projects Across SW London & Surrey

A selection of large-scale residential lighting, smart infrastructure and renewable energy installations completed for premium homes across Southwest London and the Surrey borders. Each project was delivered as a fully integrated energy and electrical strategy - not a collection of isolated interventions.

Recessed downlights in a grand entrance hallway

Entrance Hall - Detached Estate

Richmond, Surrey

Pendant and recessed lighting in a formal dining room

Dining Room - Premium Townhouse

Kingston upon Thames

Recessed and accent lighting in a large reception room

Reception Room - Whole-House Rewire

Teddington TW11

Layered ambient lighting in a living room

Smart Lighting - Surrey Estate

Cobham, Surrey

Recessed downlights in a home office

Garden Office - New Sub-Main

Esher, Surrey

LED downlights and island pendants in a large kitchen

Kitchen - Large Detached House

Kingston upon Thames

Dimmable recessed lighting in a living room

Living Room - Architectural Lighting

Richmond TW10

Slim-profile LED lighting in an apartment corridor

Hall & Landing - Detached Home

Weybridge, Surrey

IP-rated bathroom lighting

Master En-Suite - Premium Fit-Out

Cobham, Surrey

Kitchen and utility room lighting

Kitchen & Utility - Smart Home

Teddington TW11

Recessed downlights and wall lights in a large home

Lighting & Power - Full Rewire

Richmond TW9

Bedside and ceiling lighting in a master bedroom

Master Suite - Smart Dimming

Esher, Surrey

High-efficiency LED downlights in a hallway

LED Energy Upgrade - Large Estate

Kingston upon Thames

Your Property's Energy Potential, Precisely Quantified

How much solar generation can your roof realistically support? What battery capacity eliminates your overnight grid dependency? Can your current supply handle three EV chargers, a heat pump and a pool simultaneously - or does it need upgrading first? We answer these questions with data: your consumption history, your roof's solar irradiance profile, your peak demand curves. Accurate answers before any commitment. That is the standard of consultancy we bring to every property in Kingston, Teddington, Cobham and across the Surrey borders.

Request a Full Property Energy Assessment
Engineer explaining energy options to a client
  • Data-Led, Never Sales-Led

    Every recommendation begins with your actual consumption data, not manufacturer default tables. Your investment is sized to your property's real profile - maximising financial return and avoiding oversizing that inflates cost without improving performance.

  • Single Point of Technical Accountability

    The engineer who models your energy system designs the installation and oversees delivery. No translation loss between a sales consultant and a subcontracted crew. Technical continuity from the first site visit to the final commissioning report.

  • Certified at Every Layer

    Certification is handled by appropriately qualified professionals for electrical works, solar installations and EV charging where required. Documentation is provided so your insurer, surveyor and any prospective buyer can review the relevant paperwork.

  • Built to Expand Without Rebuilding

    Every system we install includes explicit expansion capacity: spare battery slots, sub-board headroom for additional EV outlets, inverter strings for future panels. The infrastructure you commission today absorbs your household's next upgrade without starting from scratch.

The Technical Disciplines Behind Large-Property Energy Engineering

Delivering meaningfully lower grid reliance across large suburban estates in Kingston, Teddington, Richmond and Surrey demands a different order of technical competence than standard domestic installation. These are the foundations we bring to every project at this scale.

Neat cable containment in a large property

Intelligent Cabling Architecture for Smart-Ready Homes

A whole-house rewire in a large property is an opportunity to build the backbone for every system your household will ever deploy. We install structured cabling pathways that support smart lighting, AV distribution, security, HVAC control and future automation from a single riser - cleanly routed, correctly containment-rated and documented in a wiring schedule that future integrators can work from without pulling ceilings down to find out what was installed and where.

Three-phase distribution board after supply upgrade

Three-Phase Supply Assessment & Upgrade Coordination

A single-phase 100A supply becomes a bottleneck the moment your home adds high-capacity loads simultaneously. We carry out a formal load analysis under BS 7671 diversity factors, calculate whether a three-phase upgrade is genuinely required or whether intelligent load management resolves the issue more cost-effectively, and - where an upgrade is warranted - manage the full process with your Distribution Network Operator from application through to energisation.

Assorted inverter, battery and distribution components

Premium Components with Verified Provenance

At the scale of a 20kWp solar system or a commercial-grade EV infrastructure installation, component quality is not optional - it is the difference between a fifteen-year asset and a five-year liability. We specify Schneider Electric distribution gear, SolarEdge or SMA inverters, Tesla or premium-tier battery storage, and Eaton or ABB protective devices. Every component is sourced through authenticated supply chains and its certificate of conformity is included in your handover documentation as standard.

Engineering-Led From the Start - By Design

Georgi Tangarov founded GThink Ltd on a precise observation: the most technically demanding residential properties in and around London were being served by either large utilities who treated them as volume jobs, or small domestic electricians who lacked the engineering depth the projects required. The answer was a practice built entirely around premium large-property work - with the technical rigour of a commercial contractor and the personal accountability of a specialist. Two decades of hands-on experience across complex solar installations, three-phase commercial-grade upgrades and estate-scale smart home commissions have validated that position. Every engineer we field is held to the standard those clients rightly expect.

Schneider Electric logo
Eaton logo
SMA logo
Sigenergy logo
Tesla Energy logo
Fox ESS logo
SolarEdge logo

An Estate That Generates Its Own Power - and Keeps It

Picture your Kingston or Cobham property on a clear July afternoon: the pool heater running from solar generation, both EVs charging from excess generation rather than the grid, the underfloor heating pre-warming from stored battery power, and the evening garden lighting sequence running on a schedule your household set once and never thought about again. The grid connection remains in place as a reliable backstop, but day-to-day reliance on it is significantly reduced. Energy costs are typically lower than a comparable all-grid property, and the system managing it all was commissioned once, documented fully, and requires little from you beyond an annual service visit. This is what large-property energy engineering can produce when it is done properly - the precise outcome depends on your property, usage and system design.

Estate Energy Intelligence - Knowledge for Large Property Owners

What Large Property Clients Say

The views of homeowners in Kingston, Teddington, Richmond, Cobham and across the Surrey borders - after system commissioning, months of real-world performance data and, in most cases, their second project with us.

"We went from a £900 monthly energy bill to under £200 in summer. The solar and battery system was sized precisely against our pool and EV consumption. Nothing generic about the approach - they knew our property's numbers before they quoted."

- Robert & Clare M., Kingston upon Thames KT1

"Four EV chargers across a double garage and a detached coach house, all load-managed from a single sub-board they installed without touching the existing house distribution. Exactly what we needed - and they delivered it on the date they said."

- David H., Cobham, Surrey

"The 3-phase upgrade recommendation came with a full load analysis report showing exactly where our single-phase supply was being overloaded. It was the first time any contractor had given us a technical rationale rather than just a quote."

- Jonathan & Sarah P., Teddington TW11

"Twenty-two kilowatts of solar and 20kWh of storage on a Richmond detached house. Modelled against two years of our smart meter data. The generation performance in the first year was within 4% of what they projected."

- Nicholas F., Richmond TW10

"Garden, pool surround and driveway lighting - all automated, all installed as part of the rewire programme so nothing needed revisiting. The coordination between the electrical and lighting teams was seamless."

- Victoria T., Esher, Surrey

Technical Guidance for Large Property Owners

Why Your Pool Is Your Biggest Solar Opportunity

Solar panels supplying power to pool equipment

Heated pool filtration and heating systems can consume 6,000 to 12,000kWh per year - more than a typical household's entire electricity use. Solar arrays sized against this single load alone often produce the fastest payback period of any renewable system on a large property.

Three-Phase Supply: When You Need It and When You Don't

Engineer assessing main supply fuse for a load upgrade

Many large properties do not need three-phase supply - they need intelligent single-phase load management. Before committing to a DNO application, a formal diversity analysis often reveals that smart scheduling of high-load circuits achieves the same outcome at a fraction of the cost and disruption.

Battery Sizing: The Number Most Installers Get Wrong

Battery sizing based on consumption data analysis

The most common battery sizing error is specifying against peak panel output rather than overnight consumption. On a large property, this typically means significant underspecification. We size storage against your actual overnight demand profile plus a resilience margin - not the inverter's maximum DC input capacity.

Our Approach for Large Property Energy Projects

1. Property Energy Audit

We pull your smart meter consumption data, survey all high-load circuits, map outbuildings and assess every usable roof plane before writing a single line of specification.

2. Integrated Energy Strategy

Solar sizing, battery architecture, EV infrastructure, supply capacity and distribution upgrades are designed as a single coherent system - with a financial model showing payback range and a phased delivery option if preferred.

3. Coordinated Zoned Delivery

Large property works are sequenced to maintain habitation throughout. Outbuildings, garages and grounds works are coordinated within the same programme so your household experiences a single, managed intervention - not a series of repeated visits.

4. Commissioned & Certified to Standard

Every system is formally commissioned, performance-verified and certified by appropriately qualified professionals for electrical works, solar and EV charging as required. All documentation is packaged for your insurer, surveyor and any future occupier.

5. Performance Monitoring & Expansion Support

We provide ongoing monitoring configuration, annual service options and a retained as-built record. When your household adds another vehicle, expands the property or increases generation, the infrastructure we built accommodates it.

See Our Full Delivery Process

Frequently Asked Questions - Large Property Energy Engineering

What size solar array is right for a large detached home in Kingston or Richmond?
For a high-consumption home with a pool, annexe or multiple EVs, we typically design systems between 10kWp and 30kWp, paired with 10kWh to 30kWh of battery storage. Every system is sized against twelve months of your actual smart meter data and projected future loads - not generic output tables or rule-of-thumb multipliers.
Can I install multi-vehicle EV charging across a large driveway or detached garage?
Yes. We design multi-outlet EV infrastructure with shared dynamic load management across two, four or more simultaneous vehicles. For properties with detached garages or coach houses, we route new armoured sub-mains through grounds as part of the same installation programme, commissioned as a unified system.
Does my large Surrey property need a three-phase supply upgrade?
Not necessarily. Many large homes achieve the same outcome through intelligent single-phase load management at significantly lower cost. We carry out a formal load analysis before recommending any DNO application. Where a three-phase upgrade is genuinely warranted, we manage the full application and coordination process with your Distribution Network Operator.
Can solar and battery storage power a heated swimming pool?
Absolutely. Pool heating and filtration is one of the highest-returning applications for solar plus storage at large property scale. Pool consumption can reach 12,000kWh per year, making it the single largest load on many Surrey estates. We size generation and storage specifically against pool consumption profiles and seasonal variation to maximise self-sufficiency year-round.
How do you manage a whole-house rewire in a large occupied property?
We zone the property and work through each area sequentially, maintaining power to the rest of the house at all times. In estates with annexes or outbuildings, distribution upgrades and sub-main extensions are coordinated within the same programme. Daily close-up is standard - your home is fully habitable overnight throughout the works.
What is the realistic financial return on a large-scale solar and battery system in Surrey?
For a well-designed 15 - 20kWp system on a high-consumption property, indicative payback periods in the region of six to nine years are often modelled, depending on consumption, tariff and export arrangements. Combined with Smart Export Guarantee income, solar-powered EV charging and avoided peak-rate grid tariffs, the financial case can strengthen over time if grid prices rise, though this cannot be guaranteed. We model this against your actual consumption before you commit - with a documented projection you can share with your financial adviser.
Can you design garden, grounds and estate lighting for a large property?
Yes. Grounds and garden lighting is a core part of our residential portfolio at this scale. We design low-voltage LED path and feature lighting, pool surround illumination, architectural uplighting for the building facade and smart-controlled scene sequences that operate automatically from dusk, on occupancy sensor or from a single app. All outdoor circuits are IP-rated and designed for long-term maintenance access.
Do you work across Cobham and the wider Surrey area?
Yes. We regularly complete projects in Cobham, Esher, East Molesey, Thames Ditton, Weybridge and across the Surrey borders, as well as Kingston upon Thames, Teddington and Richmond. Large property energy engineering is our preferred project type in this geography, and we maintain priority scheduling capacity for these locations.
What does an electricalworks handover pack include for a large property project?
Electrical completion certificates, annotated single-line diagrams for all distribution and sub-main circuits, solar certification documentation, battery commissioning reports with performance benchmarks, EV charger compliance documentation, smart system configuration records, full equipment warranties and a written Homeowner Report covering expected performance, maintenance intervals and expansion pathways.

Commission a Large Property Energy Assessment