5-Year Workmanship Warranty
When you commission electricalworks to rewire a Victorian terrace in Fulham, upgrade a consumer unit in a Hackney conversion, or wire the electrical portions of a solar installation in Wimbledon, every hour of installation labour and every metre of containment we fit is guaranteed for five full years against defects in workmanship.
This is not a conditional offer buried in small print. It is a direct reflection of the engineering discipline our teams apply to every circuit. We operate as an NICEIC Approved Contractor - the highest tier of NICEIC registration - which means our work is assessed against BS 7671 (18th Edition) by an independent body, not self-certified. For homeowners, that matters enormously. If a fault arises from our installation within the warranty period, we investigate it, we own it, and we remediate it at our cost.
This guarantee also provides practical protection at the point of property sale. Solicitors and mortgage lenders increasingly request evidence of workmanship accountability. Our NICEIC Approved Contractor status and the accompanying Electrical Installation Certificates create an auditable chain of responsibility that reassures buyers and their conveyancers in a way that sole-trader paperwork rarely can.
25-Year Solar Panel Performance Guarantee
London receives less annual irradiance than southern Spain, but that is not the decisive factor in a solar investment. What matters is consistency - and Tier 1 monocrystalline panels deliver precisely that. The panels we specify from established tier-one manufacturers carry a linear performance guarantee to at least 85% of rated output after 25 years, validated against IEC 61215 and IEC 61730 standards.
In practical terms, a 5 kWp system installed on a south-facing London roof today will still be producing well over 4 kWp of generating capacity a quarter of a century from now - enough to meaningfully offset grid demand regardless of future electricity tariff movements. We provide the full datasheet, performance warranty certificate and MCS design documentation at handover so you hold the evidence, not just our word for it.
That documentation is not merely reassuring. It is the prerequisite for registering your Smart Export Guarantee (SEG) tariff with a licensed electricity supplier, and it is what lenders and valuers increasingly require when a property with a solar installation changes hands. We make sure it is complete and coherent before we leave site.
10-Year Battery Storage Warranty
Battery storage transforms a solar installation from a daytime-only asset into a genuine 24-hour energy management tool - particularly relevant for London households running EV chargers, heat pumps, or high baseload appliances through the evening hours. The economics only hold, however, if the battery degrades at the rate the manufacturer promises.
We install Tesla Powerwall 3 and equivalent premium storage architectures that carry 10-year manufacturer warranties covering both charge cycle count and capacity retention. The Powerwall 3, for example, guarantees 70% end-of-warranty capacity after a decade of daily cycling - a figure that underpins any serious off-peak tariff strategy such as Octopus Intelligent or Octopus Go, where cheap overnight electricity is stored for peak-hour use.
Our commissioning process includes configuring remote monitoring so that capacity drift is visible well before it reaches warranty threshold levels. If an OEM claim is ever required, the telemetry records we help establish are precisely the evidence manufacturers need to process it without delay. Our responsibility for the electrical installation - conductors, isolators, metering tails and earthing - runs in parallel for the full five-year workmanship period.
Total Regulatory Compliance & Certification
London homeowners should never have to navigate planning authorities, building control offices, network operators or certification bodies on their own. That entire compliance process is part of what electricalworks delivers - not an optional add-on, and not something we hand back to you once cables are pulled.
Every notifiable electrical installation we undertake is registered under Part P of the Building Regulations, with a Minor Works Certificate or Electrical Installation Certificate issued to you on completion. For solar and battery installations connected to the grid, we prepare and submit the G98 or G99 notification to UK Power Networks (UKPN) - the Distribution Network Operator serving most of London - covering everything from engineering assessment through to formal network acceptance.
For microgeneration projects requiring MCS certification, we guarantee that the full commissioning dossier is completed correctly before handover. This includes:
- MCS 001 installation certificate with system design parameters
- Inverter commissioning report with serial numbers and firmware version
- DNO acceptance confirmation (G98 or G99) for grid-tied systems
- Evidence pack for Smart Export Guarantee (SEG) tariff registration with your chosen licensed supplier
Without a complete and accurate MCS dossier, your SEG application will be delayed or rejected. We have never had one rejected, and we intend to keep it that way.
100% Transparent Pricing
The quote you sign is the price you pay. This is the simplest and most important commitment we make to every client, and we mean it without qualification.
Before any work begins - whether we are rewiring a four-bedroom Edwardian house in Wandsworth, installing a solar and battery system on a semi-detached in Barnet, or fitting a commercial EV charging infrastructure in an NW1 car park - you receive a fully itemised written quotation. That document sets out labour by phase, materials by specification, containment route, commissioning attendance, and any third-party costs such as scaffolding or DNO application fees.
We do not issue provisional quotes that grow once access is confirmed. We do not insert open-ended clauses for "unforeseen circumstances" as a mechanism to inflate final invoices. If, during works, you elect to change scope - adding a circuit, upgrading a specification, extending cable runs - we issue a written variation order with the cost attached before any additional work proceeds. Nothing is done on a handshake and billed retrospectively.
For London homeowners who have previously experienced contractors arriving with a competitive quote and departing with a significantly larger invoice, this policy is the reason clients return to us and refer their neighbours.
Book a no-obligation engineering consultation - thirty minutes, no pressure, and a clear sense of what your project will cost and what guarantees protect it.