ENERGY EQUIPMENTS
North West

Energy Storage Sizing & ROI Calculator

Input your property's daily consumption and solar array size to calculate the optimal hybrid inverter and LiFePO4 battery capacity, with realistic UK bill savings and payback estimates.

Quick Presets:

1. Property & Energy Profile

Adjust sliders to match your exact home or client site requirements.

15 kWh / day
5 kWh (Low) 15 kWh (Typical UK) 30 kWh (EV/HP) 45 kWh (High)

Estimated annual consumption: 5,475 kWh/year

5.0 kWp
0 kWp (Storage Only) 4.0 kWp 8.0 kWp 15 kWp (Large)

Estimated solar generation: 4,750 kWh/year

Electricity Tariff Type:
Est. Annual Savings £1,478 per year off energy bills
Grid Independence 78% self-sufficiency rate
Est. Payback ~1.4 yrs equipment cost recovery
ES-PKG-04

Energy Equipments North West Turnkey Package ES-PKG-04: 5kW Inverter + 10.24kWh Battery

Our most popular residential system. Pairs a robust 5kW hybrid inverter with 10.24kWh of high-capacity storage. Features active heating, aerosol fire safety suppression, and built-in WiFi.

UK Warehouse Wholesale £2,137.00 ex. VAT
🔋
10.24 kWh LiFePO4
Deep-cycle storage
⚡
5 kW Hybrid
2x PV Oversize (Up to 10kW Solar)
❄️
Sub-Zero Auto-Heating
-20°C winter charge ready
🛡️
10-Year Factory Warranty
Wires & comms included
Compare Packages
🌱 Est. CO₂ offset: 1,393 kg/year
Equivalent to ~32 trees/year
Arbitrage Scenario Analysis

Overnight Tariff Arbitrage: How Much Can You Save?

Charge your Energy Equipments battery when grid power is cheapest overnight (e.g. 7p/kWh) and power your home during the day when standard electricity costs 28.5p/kWh. Run the numbers below to see your daily, annual, and 10-year warranty savings.

Spread: 21.5p / kWh Saved
1. Select Battery Storage Capacity Usable shift: ~9.2 kWh/day
2. Choose UK Electricity Tariff Preset
Overnight Off-Peak Rate: 7.0p / kWh
4.0p 7.0p (Intelligent) 8.5p (Go) 16.0p
Daytime Peak Rate (Standard Grid): 28.5p / kWh
20.0p 28.0p (UK Cap) 34.0p 38.0p
Daily Net Saving £1.95 every 24-hour cycle
Monthly Bill Cut £59 per month off electricity
Annual Arbitrage £711 pure tariff shift / year
10-Year Warranty Total £7,110 over factory warranty life
Arbitrage Economics Breakdown 100% Automated Inverter Logic
Overnight charge cost (9.2 kWh @ 7p): £0.68 / night
Value of daytime electricity displaced (@ 28.5p): £2.63 / day
Net Daily Profit / Bill Reduction: +£1.95 / day
Estimated Payback Time: ~3.0 Years (on ES-PKG-04 at £2,137 Ex. VAT)

24-Hour Operational Cycle: How Your Battery Shifts Energy

The Energy Equipments hybrid inverter connects to your home WiFi and runs automated time-of-use scheduling. No manual switching required.

00:30 – 04:30 Off-Peak

🌙 1. Fast Overnight Charge

While you sleep, the inverter pulls cheap 7p electricity from the grid, charging the LiFePO4 battery to 100% capacity in under 3 hours.

Daily charge cost: ~£0.68
07:00 – 09:00 Morning Peak

☕ 2. Morning Routine

Kettles, toasters, power showers, and electric heating turn on. The battery supplies full power instantly, avoiding standard 28.5p daytime grid rates.

Grid Import: 0 kW
09:00 – 16:00 Daytime Baseline

☀️ 3. Daytime & Solar Top-Up

Fridges, heat pumps, and home office loads run off battery or solar PV. If solar is generating, it charges the battery for free and exports surplus to the grid.

Blended solar & stored power
16:00 – 21:00 Peak Window

🍳 4. Evening Dinner Peak

UK electricity hits its highest demand. Ovens, hobs, TVs, and appliances run completely off stored low-cost energy—bypassing the most expensive grid units of the day.

Saves 21.5p on every kWh

❄️ Why Overnight Arbitrage Guarantees 365-Day ROI in UK Winters

Integrated Sub-Zero Auto-Heating (-20°C)

The biggest objection to UK solar storage is: "What happens in winter when there is no sun?" UK winter daylight yields only ~15% of summer solar output, but household heating and lighting consumption peak at their highest levels. With overnight smart tariff charging, your Energy Equipments battery operates at 100% financial capacity throughout November, December, January, and February—charging cheaply at 7p every single night without waiting for sunshine.