Features

Everything in One Place

One dashboard, one optimiser, one source of truth for your home energy.

👁

Shadow Mode

Not ready to hand over control? Run the optimiser in shadow mode first. It watches your system, builds the same charge and discharge schedule it would execute, and shows you exactly what it would have done—without touching your inverter.

Once you're confident it's making the right calls, flip the switch. Shadow mode stays available any time you want to step back and observe.

Shadow Mode All the insight. Zero risk.

00:0006:0012:0018:0000:00
Grid Charge Discharge Solar EV
👁 Observing — not acting
📈

Real-Time Dashboard

Your energy system at a glance, always up to date. Live power flows for solar generation, battery charge and discharge, grid import and export, and home consumption stream in via server-sent events—no refresh, no polling, no delay.

At the top of every page: today's optimiser action, how much you've saved so far today, and when the next cheap rate window opens.

£

Agile Rate Explorer

Every half-hour rate* for the day laid out clearly—colour-coded green, amber, or red so cheap windows are obvious at a glance. Navigate forward and back to plan ahead or review past days.

Spot plunge-pricing windows where rates go negative, see both your import and export rates side by side, and understand exactly what each part of the day costs before the optimiser acts.

🚘

EV Charge Scheduling

Automatically charges your EV at the best time based on your tariff rates and solar forecast. Choose how aggressively to charge with three modes:

  • Low — cheapest slots only. Maximum savings.
  • Medium — cheap and normal slots. Balances cost with readiness.
  • High — priority charging, ready by a time you set.

Need charge right now? Boost overrides the schedule and starts charging immediately. Planning a trip? Journey scheduling lets you add a departure date and time so the optimiser guarantees your car is ready when you need it.

Low
cheapest slots
Medium
cheap & normal
High
priority charge
State of Charge (SoC)64%
Boost
charging now
Next journey
Sat 3 May Ready by 08:00
🌱

Savings Tracking

See exactly what the optimiser is saving you. Every day, Joule Genie records what you actually paid versus what you would have paid on a flat grid tariff or a basic overnight timer—so you always know your return.

  • Total savings, optimised cost, and daily average across 7, 30, or 90 days.
  • Head-to-head comparison: grid-only, basic timer, and Joule Genie side by side.
  • Self-consumption rate—how much of your solar you're using rather than exporting.

No estimates. No projections. Real numbers from your actual usage.

How we compare — last 30 days
Grid Only
£48.20
Basic Timer
£32.80
Optimised
£18.35
You saved £29.85 vs grid-only · £14.45 vs basic timer
Self-Consumption74%
📱

Mobile Apps

Native Android and iOS apps are in development. The full dashboard, live energy flows, savings tracking, and optimiser status—all in your pocket.

Push notifications will alert you to advisories, plunge-pricing windows, and completed charge sessions. Coming soon.

🔒

Secure by Design

Your inverter and tariff credentials are encrypted at rest—we never store them in plain text. All communication between your browser and our servers is over TLS.

Accounts are protected with bcrypt password hashing, optional two-factor authentication via an authenticator app or SMS, and per-user lockout after repeated failed attempts. You can revoke access at any time.

☀️

Solar Forecast

Joule Genie predicts how much solar your panels will generate each day, combining the weather forecast with the specific details of your installation—panel size, tilt, orientation, and shading.

  • Today at a glance: total generation, peak power, sun hours, and average output.
  • Seven-day outlook so the optimiser can plan ahead, not just react.
  • Hour-by-hour breakdown showing exactly when your panels will produce.
  • Self-calibrating—the system compares its predictions against your actual output and gets more accurate over time.
The week ahead
Mon
18.4
Tue
🌝
13.1
Today
⛈️
8.9
Thu
☁️
4.5
Fri
🌝
15.2
Sat
22.1
Sun
25.0
kWh forecast per day
Peak power
3.2 kW
Sun hours
4.5 hrs
Total today
8.9 kWh

* Only possible with time of use tariffs.

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