More East London homeowners are combining solar panels, battery storage, EV chargers and smart home systems into a single integrated energy setup. Here's how it works and what it costs.
The way East London homeowners power their homes is changing rapidly. Solar panels, battery storage, EV chargers, and smart home energy management systems are no longer separate products — they're increasingly being designed and installed as integrated systems that work together to maximise self-consumption, minimise grid import, and reduce energy bills to a fraction of what they were just five years ago.
The Integrated Energy System: How It All Fits Together
A fully integrated home energy system in 2026 typically consists of four components: solar PV panels (generating electricity from sunlight), a battery storage system (storing surplus solar energy for use when panels aren't generating), an EV charger (ideally a smart charger that can be scheduled to charge from solar or cheap overnight tariffs), and an energy management system that coordinates all three to maximise self-consumption and minimise cost.
When these four components are properly integrated, the result is a home that generates its own electricity during the day, stores surplus energy in the battery, charges the EV from stored solar energy in the evening, and only draws from the grid when genuinely necessary. For many East London homeowners, this combination can reduce electricity bills by 70–90% compared to a standard grid-only setup.
Solar PV: The Foundation of the System
Solar panels are the starting point for any integrated energy system. A typical 4kWp domestic solar system in East London generates around 3,400 kWh per year — enough to cover a significant proportion of a typical household's electricity consumption. The key to maximising the value of solar is to use as much of the generated electricity as possible within the home (self-consumption) rather than exporting it to the grid at the lower SEG rate.
Without battery storage, self-consumption rates for a typical household are around 30–40% — meaning 60–70% of generated solar energy is exported. With battery storage, self-consumption rates typically rise to 70–85%. With an EV that can be charged from solar, self-consumption can reach 90%+ in summer months.
Battery Storage: Making the Most of Your Solar
Battery storage systems store surplus solar energy generated during the day for use in the evening and overnight. The most popular systems in East London in 2026 include GivEnergy (5–10kWh), Tesla Powerwall (13.5kWh), and Solax (5–10kWh). A 5kWh battery is typically sufficient for a 2–3 bedroom property; a 10kWh battery suits larger properties or those with higher evening consumption.
Battery storage also enables a strategy called time-of-use tariff optimisation — charging the battery from the grid during cheap overnight periods (such as Octopus Go at 7p/kWh) and using that stored energy during expensive peak periods. This strategy works even without solar panels, but the combination of solar + battery + cheap overnight tariff is particularly powerful.
EV Charging: The Third Pillar
A smart 7kW wallbox charger — such as the Zappi, Ohme, or Hypervolt — can be configured to charge the EV preferentially from solar generation, from battery storage, or from the grid during cheap overnight periods. The Zappi charger in particular is designed specifically for solar integration, with an Eco mode that diverts surplus solar generation to the EV rather than exporting it to the grid.
For East London homeowners with solar panels, charging an EV from surplus solar generation is essentially free electricity. A typical EV with a 60kWh battery costs approximately £4–£5 to charge from solar versus £14–£17 from the grid at standard rates, or £25–£40 on a public rapid charger.
Energy Management Systems: The Intelligence Layer
Energy management systems (EMS) are the software layer that coordinates solar, battery, and EV charging to maximise self-consumption and minimise cost. Systems like GivEnergy's GivAI, Tesla's Powerwall app, and third-party platforms like Home Assistant can monitor real-time generation, consumption, battery state, and EV charge level — automatically making decisions about when to charge the battery, when to charge the EV, and when to export to the grid.
What Does a Full Integrated System Cost in East London?
- Solar PV (4kWp): from £5,500–£7,500 installed (MCS certified)
- Battery storage (5kWh): from £2,500–£3,500 installed
- Battery storage (10kWh): from £4,000–£5,500 installed
- EV charger (7kW smart wallbox): from £750–£1,100 (before OZEV grant)
- Full integrated system (solar + battery + EV charger): from £9,000–£14,000
- Typical annual saving: £1,500–£2,500 depending on usage and tariff
- Typical payback period: 6–10 years
OZEV Grant: The OZEV EV charger grant provides up to £350 off the cost of a home EV charger installation. KLIC ELECTRICAL is OZEV-approved — we apply the grant directly, reducing your upfront cost. The grant applies even when the charger is installed as part of a larger solar/battery system.
Can I Add Components to an Existing System?
Yes — all three components can be added incrementally. Many East London homeowners start with solar panels, then add battery storage 1–2 years later when they've seen the solar generation data and want to increase self-consumption. An EV charger can be added at any point. The key is to ensure that the initial solar installation uses an inverter that is compatible with battery storage — which KLIC ELECTRICAL ensures as standard on all solar installations.
Integrated Energy Systems Across East London
KLIC ELECTRICAL installs solar PV, battery storage, and EV chargers across East London — from the Victorian terraces of Walthamstow and Leyton to the family homes of Stratford and the properties of Ilford and Barking. We design integrated systems from the outset, ensuring all components work together efficiently and are correctly certified.
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