⚡ Energy Monitor

Powerwall 3 · Solar · EV · Agile Octopus

Compare UK suppliers → Solar calculator → Agile tracker → EV ownership →

🔋 Powerwall 3 × 2

Battery

—

0 kW

Solar

—

🌙 Not generating

Home

—

Consumption

Grid

—

Neutral

Capacity

27kWh

2 × Powerwall 3

☀️ Solar: 0.0 kW → 🏠 Home: 0.0 kW → 🔋 Battery: 0.0 kW → ⚡ Grid: neutral

📊 Octopus Agile (East Midlands)

Current Rate

22.7p

Next 24h Low

22.7p

Next 24h High

36.1p

⏰ Cheapest Charging Window

21:30 – 21:00 · avg 23.4p/kWh — perfect time to charge the Audi or fill the battery

🚗 Audi Q4 E-Tron

Charge Level

—

82 kWh battery (usable ~77 kWh)

Status

—

🟡 Idle

Charge Rate

—

Max 11 kW (3-phase AC)

Time Remaining

—

0–100%: ~8 hrs at 11 kW

💰 EV Charging Economics

Octopus Agile Off-Peak

~7–12p/kWh

Full charge: £5.39–£9.24 (77 kWh usable)

Octopus IOG Off-Peak

7p/kWh

Full charge: £5.39 — guaranteed 6h window

Solar via Powerwall

0p/kWh (free)

Free miles on sunny days — charge from solar excess

Public Rapid (150 kW+)

~75–85p/kWh

Full charge: £57.75–£65.45 — avoid if possible!

🐙

Switch to Octopus Energy

Use my referral link to sign up. You get £50 credit, I get £50 — and you can switch to Agile, Tracker, Cosy, or Intelligent Go.

Best for solar homes (Outgoing Agile/Flux), EV owners (Intelligent Octopus Go), or anyone who likes smart tariffs.

⚡ Quick Tariff Comparison

See full comparison on the energy providers page →

Provider	Tariff	Off-Peak	Peak	Best For
Octopus	Agile	~5–15p	~15–35p	Shiftable loads, battery
Octopus	IOG	7p	~28p	EV owners (compatible cars)
Octopus	Flux	~20p	~35p	Solar + battery (best export)
Octopus	Cosy	12p	~38p	Home workers, heat pumps
E.ON	Next Drive	6.9p	~27p	EV owners (lowest off-peak)
OVO	Charge Anytime	7p	~27p	EV owners
British Gas	EV Tariff	~8p	~26p	BG customers with EV

🏠 My Setup

2 × Powerwall 3 (27 kWh total) · Solar panels · Audi Q4 E-Tron · Octopus Agile tariff · Tesla Owner API · Home Assistant

Data from Tesla Owner API & Octopus Energy · Updated every 30s · 2026