Every system we design is built around your property’s electrical infrastructure, consumption profile and long-term energy goals - not a generic template. From initial load assessment to final commissioning, solar, battery and EV charging are engineered as one integrated solution.
electricalworks by GThink Ltd is a specialist integrated energy engineering practice serving premium homes across Surrey and South West London. We design solar, battery storage and EV charging as a single coherent system - sized around your consumption profile, roof geometry, electrical infrastructure and long-term energy objectives. The electrical engineering foundation - consumer unit capacity, supply cable rating, load calculations, and protection coordination - is assessed and resolved before a single component is ordered. That discipline is what distinguishes a properly engineered system from a product simply bolted onto an unprepared installation.
Solar, battery and EV systems are only as reliable as the electrical infrastructure beneath them. Every system we commission is assessed, designed and installed to a consistent engineering standard - from the DNO application and consumer unit assessment through to inverter commissioning and system handover. We carry out half-hourly consumption profiling before any component is specified, and verify performance after installation is complete. The result is a system that is correctly sized, properly protected, and built to perform for the long term.
When solar, battery and EV charging are co-designed from the start, the result is a system where each element reinforces the others. The inverter is sized for the combined generation and storage requirement. The consumer unit is assessed for the full connected load. The EV charger is configured to draw on surplus solar before falling back to stored or grid energy. Specifying these systems together removes the infrastructure compromises that arise when they are added sequentially, and typically produces a more efficient installation overall.
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Before any component is selected, we model your roof geometry, shading profile, consumption data and DNO export constraints to establish the right system size and panel configuration. We specify Tier-1 monocrystalline panels from manufacturers with independently verified performance warranties. The aim is maximum annual yield from an installation that integrates cleanly with your property and your existing electrical infrastructure.
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When an EV charger is linked to a solar array and battery, the vehicle charges primarily on energy the property has already generated, with grid supply as a fallback. We specify and install smart chargers precisely matched to your inverter architecture and household load profile, with cabling routes designed to complement your property. All EV charging installations are designed and delivered in line with relevant UK electrical standards, with certification handled by qualified professionals as required.
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A solar and battery system is only as reliable as the electrical installation it connects to. Consumer unit capacity, supply cable rating, earthing arrangements and protection coordination must all be assessed before any energy hardware is specified. Our electrical engineering expertise - rewiring, three-phase distribution, Hager and Schneider fuse gear, BS 7671 compliance - means we resolve the infrastructure requirements as part of the system design, not as an afterthought.
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Commissioned systems are monitored for yield performance and any deviations addressed promptly. We offer planned maintenance programmes and on-demand support to ensure your solar, battery and EV systems continue to perform to specification. Annual reviews include a yield-versus-forecast comparison and a check of system firmware and protection settings.
Book Proactive CareA selection of completed installations across Surrey and South West London, covering solar PV systems, battery storage, EV charging and electrical infrastructure. Each project is handled from initial assessment through to commissioning and handover.
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South West London
Surrey
Surrey / SW London
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Surrey
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Surrey
South West London
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London
Every energy system we propose begins with a structured assessment of your property - consumption data, roof geometry, DNO export constraints, electrical infrastructure, and tariff structure. The outcome is a clear financial case for the system, based on your specific situation, before any commitment is made or any component specified.
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No standard packages. Every system is sized and specified around your consumption profile, your electrical installation, and your long-term objectives.
Every installation is carried out to a consistent standard - from the electrical assessment through to final commissioning and handover documentation.
The electrical installation - consumer unit, supply capacity, earthing, and protection - is assessed and resolved before any energy hardware is specified or ordered.
We don’t install and vanish. Maintenance and expert advice keep your systems at peak for years.
A solar or battery system connects directly into your property’s electrical installation. If the consumer unit, supply cable or earthing arrangement is not assessed and sized correctly for the combined load - solar inverter output, battery charge and discharge currents, and EV charging demand - the result can be nuisance tripping, protection failures, or systems that simply cannot operate at their rated capacity. Getting this right at the design stage is straightforward when you have the electrical engineering expertise to do it properly.
Cable routes for solar, battery and EV systems are planned from the outset to minimise visual impact. Concealed routes preserve the character of period and contemporary interiors alike. Where surface containment is unavoidable, it is installed to a measured, professional standard. All installations are carried out in compliance with current wiring regulations.
We install 18th Edition consumer units with individual RCBOs, so a single fault doesn’t take down the rest of your home. Load balancing and circuit-level diagnostics help protect your family and your equipment, while careful component selection keeps operation quiet.
We specify solar panels, inverters, batteries and EV chargers from manufacturers with independently verified performance and warranty records. The quality of the hardware matters. So does the quality of the electrical components - cabling, terminations, Hager and Schneider distribution equipment - that connect it all together.
Founded by Georgi Tangarov, a master electrician with two decades of hands-on experience, electricalworks has grown from a premium electrical contracting practice into a specialist integrated energy engineering business. Every project we undertake today - whether a Tier-1 solar array on a Weybridge estate or a smart battery retrofit in a Wandsworth townhouse - reflects the same engineering philosophy that has defined this practice from its founding: specify precisely, install flawlessly, and remain accountable indefinitely.
A correctly sized and integrated solar, battery and EV system changes your relationship with energy costs in a meaningful way. The solar array generates throughout the day. The battery stores what is not immediately consumed. The EV charger draws on that stored energy before using the grid. Performance, savings and payback depend on system design, property usage, tariff structure and future energy prices - factors we assess and model before any system is specified, so the outcome is grounded in your property’s own numbers rather than a generic projection.
Our clients measure success in kilowatt-hours exported, grid bills eliminated, and assets commissioned. Here’s what our clients say months and years after installation.
A solar and battery system introduces significant new electrical loads. Before any energy hardware is specified, your consumer unit must be assessed for spare ways, RCBO capacity, and surge protection compatibility. An undersized or outdated consumer unit is one of the most common causes of integration problems in retrofit installations. Resolving this before installation begins avoids delays and additional costs later.
On Octopus Agile or Go tariffs, a home battery can be programmed to charge at sub-5p/kWh overnight and discharge during 30p+ peak periods. Without solar, this alone can deliver material bill savings. With solar, the battery is also filled by free daytime generation - an effect that can strengthen the case for battery storage over time, though actual savings depend on tariff structure and usage patterns.
Most Tier-1 solar panel, inverter and battery manufacturers require installation by a qualified and registered installer to validate their product warranties. An installation that does not meet those requirements may affect your eligibility for export tariffs and manufacturer warranty coverage simultaneously. Before committing to any system, confirm that the installer can provide the relevant certification and warranty documentation in your name on completion.
Every system begins with a structured assessment, not assumptions. Here is how we take a property from initial consultation to a fully commissioned and documented energy installation.
Smart Meter half-hourly data, roof geometry, DNO export limits, and tariff structure are combined into a site-specific savings forecast before any component is specified or any commitment is made.
Solar, battery, EV and consumer unit are co-designed as one system, with a single DNO application covering the combined load. Installation follows the agreed design with consistent oversight from start to finish.
System commissioning, DNO notification, and relevant certification and warranty documentation are handled as part of the installation programme and issued in your name on completion.
Annual yield-versus-forecast reviews, inverter firmware updates, system diagnostics, and tariff guidance as available products evolve - keeping your installation performing to specification throughout its working life.
