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tesla-style-energy-flow

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# Tesla Style Energy Flow

Custom Home Assistant Lovelace card for energy flows on a house scene, with dynamic weather/day-night backgrounds and EV-aware layout switching.

> **Fork notice** — This is a community fork of
> [stexecute/tesla-style-energy-flow](https://github.com/stexecute/tesla-style-energy-flow)
> (MIT). The following were contributed by this fork and already merged into upstream:
> visual scene-position editor, editor debouncing, Tesla-style label hierarchy,
> scene tone gradients per time-of-day, extended `background_map` keys.
>
> This fork currently adds the following on top of upstream (PR #22 open):
>
> - **fix:** Grid → Battery flow animation now always shown when the
>   grid charges the battery (with or without simultaneous solar) *(not fully tested — feedback welcome)*
> - **feat:** Separate battery charge / discharge power entities —
>   `battery_charge_power` and `battery_discharge_power`
> - **feat:** Separate grid import / export power entities —
>   `grid_import_power` and `grid_export_power` (SMA SHM 2.0, Victron, Fronius, …)
> - **feat:** Smart entity filtering in editor dropdowns (W/kW, %, V, A)
> - **refactor:** Fully restructured editor UI — sensors grouped by topic,
>   visual editor button at the top, friendly names in dropdowns
>
> Upstream maintainer: [@stexecute](https://github.com/stexecute).
> Until PR #22 is merged this fork can be installed as a HACS Custom Repository.

[![Open your Home Assistant instance and open a repository inside the Home Assistant Community Store.](https://my.home-assistant.io/badges/hacs_repository.svg)](https://my.home-assistant.io/redirect/hacs_repository/?owner=stexecute&repository=tesla-style-energy-flow&category=dashboard)

![Tesla Style Energy Flow single EV day](https://raw.githubusercontent.com/stexecute/tesla-style-energy-flow/main/docs/screenshots/08-single-ev-day-clear.png)

[Features](#features) • [Installation](#installation) • [Usage](#usage) • [Screenshots](#screenshots) • [Files](#files) • [License](#license)

## Features

- Smooth animated SVG flow lines
- Flow colors by source: solar = yellow, battery = green, grid = red
- Dynamic background (weather + day/night + EV charging)
- Scene-specific label/guide positioning for each background
- Optional dual-EV support with separate EV1 / EV2 power, battery and charging switch entities
- Optional `ev_label` / `ev2_label` for custom vehicle names
- Optional `roof_a_label` / `roof_b_label` for custom PV array names
- Optional `ev_presence` / `ev2_presence` to show the EV scene when a vehicle is at home, even if it is not charging
- Optional `scene_path_map` and `scene_component_map` overrides for custom dual-EV backgrounds
- Config editor with entity dropdowns
- Multilanguage UI (`auto`, `it`, `en`, `es`, `fr`, `de`)
- Configurable thresholds for flow visibility:
  - `thresholds.solar_min_w`
  - `thresholds.grid_min_w`
  - `thresholds.battery_min_w`
  - `ev_min_w`
- Optional `ev_hide_when_idle` to hide EV labels/guide when not charging
- Optional `ev_in_load` / `ev2_in_load` for whole-home meters that already include the wallbox draw in `load_power` (SMA SHM 2.0, SolarEdge total_consumption, …) — the card subtracts EV power from load before flow allocation so the battery is not double-counted
- Optional `smoothing_seconds` (Tesla-style EWMA, default `0`) — set to e.g. `10` to dampen the cloud-induced jumpiness on Solar, Grid, Battery, Load. EV power stays unsmoothed so start/stop transitions remain instant.
- Optional `show_header` to show or hide the card title
- Optional `font_scale` to improve readability on compact cards or tablet layouts
- Optional `battery_invert` if your battery sensor uses the opposite sign convention
- Battery node hidden automatically when no battery entities are configured
- Battery percentage remains readable even when battery power is idle
- Simplified node status text with battery-focused charging/discharging state

## Installation

### HACS (Custom Repository)

1. HACS -> Frontend -> Custom repositories
2. Add this GitHub repo URL: `https://github.com/stexecute/tesla-style-energy-flow`
3. Category: `Dashboard`
4. Install `Tesla Style Energy Flow`
5. Refresh browser cache

### Manual

1. Copy package files to:
   - `dist/tesla-style-energy-flow.js` -> `/config/www/community/tesla-style-energy-flow/tesla-style-energy-flow.js`
   - `dist/backgrounds/*` -> `/config/www/community/tesla-style-energy-flow/backgrounds/*`
2. Add Lovelace resource:

```yaml
lovelace:
  resources:
    - url: /local/community/tesla-style-energy-flow/tesla-style-energy-flow.js
      type: module
```

3. Reload frontend (or restart Home Assistant)

## Usage

```yaml
type: custom:tesla-style-energy-flow
title: Tesla Style Energy Flow
show_header: true
language: auto
background: /local/community/tesla-style-energy-flow/backgrounds/scene_day_clear_idle.png
dynamic_background: true
background_asset_base: /local/community/tesla-style-energy-flow/backgrounds
battery_invert: false
grid_invert: false
font_scale: 1.0
ev_label: Model Y
ev2_label: Model 3
roof_a_label: South
roof_b_label: West
ev_hide_when_idle: false
ev_min_w: 150
thresholds:
  solar_min_w: 50
  grid_min_w: 50
  battery_min_w: 50
entities:
  solar_power: sensor.solar_power
  roof_a_power: sensor.roof_array_a_power
  roof_a_voltage: sensor.roof_array_a_voltage
  roof_a_current: sensor.roof_array_a_current
  roof_b_power: sensor.roof_array_b_power
  roof_b_voltage: sensor.roof_array_b_voltage
  roof_b_current: sensor.roof_array_b_current
  grid_power: sensor.grid_power
  battery_power: sensor.battery_power
  load_power: sensor.home_load_power
  battery_level: sensor.battery_level
  ev_power: sensor.ev_charging_power
  ev_battery: sensor.ev_battery_level
  ev_charge_switch: switch.ev_charge
  ev_presence: binary_sensor.ev_presence
  # Optional second EV — leave empty or omit entirely if you only have one car
  # ev2_power: sensor.your_ev2_charging_power
  # ev2_battery: sensor.your_ev2_battery_level
  # ev2_charge_switch: switch.your_ev2_charge
  # ev2_presence: binary_sensor.your_ev2_presence
  weather: weather.home
  sun: sun.sun
```

The card ships with built-in SVG flow paths and scene presets, so no extra `paths:` block is required for a normal install.

The second EV is optional. If `ev2_*` entities are not configured, the card behaves exactly like the single-EV version.

If presence entities are configured:

- the card can keep the EV scene visible when a car is at home even if charging power is `0`
- if only one EV is present/active, the single-car scene is reused and mapped to that vehicle
- if both EVs are present/active, the dual-EV scene logic is used

Optional roof array sensors can also be added for two array overlays:

- `roof_a_power`
- `roof_a_voltage`
- `roof_a_current`
- `roof_b_power`
- `roof_b_voltage`
- `roof_b_current`

For custom dual-EV scenes you can also override per-scene geometry through:

- `scene_path_map`
- `scene_component_map`

## Troubleshooting

### The grid → battery line disappears while the car is charging

**Symptom:** the grid → battery flow line shows correctly while the car is *not*
charging, but vanishes as soon as the EV starts charging — even though the grid is
still charging the battery.

**Cause:** your `load_power` sensor is a **whole-home / total-consumption meter**
that *already includes the wallbox draw* (common with SolarEdge `power_consumption`,
SMA SHM 2.0, and other house-level meters). When `ev_in_load` is left at its default
(`false`), the EV draw is counted twice in the flow allocation — once inside the
inflated home load and once as the separate EV path. The card allocates grid import
to the home load and the EV *before* the battery, so during charging the grid-import
budget is exhausted and the computed grid → battery flow drops to zero, hiding the line.

**Fix:** tell the card the EV is already included in the load meter:

```yaml
ev_in_load: true        # set ev2_in_load: true as well if you have a second EV
```

The card then subtracts the EV power from `load_power` before allocating flows, so the
grid → battery line stays visible while the car charges. Only set this if your load
meter actually includes the wallbox — if you have a *dedicated* EV circuit that is **not**
part of `load_power`, leave it `false`.

### Grid / battery flow direction looks inverted

Some inverters (e.g. SolarEdge) report the opposite sign from what the card expects.
The card expects **positive = grid importing** and **positive = battery charging**.
If a flow points the wrong way, add `grid_invert: true` and/or `battery_invert: true`,
or use the separate `grid_import_power` / `grid_export_power` and
`battery_charge_power` / `battery_discharge_power` entities.

## Screenshots

Day clear (idle)

![Day clear idle](https://raw.githubusercontent.com/stexecute/tesla-style-energy-flow/main/docs/screenshots/01-day-clear-idle.png)

Day rain (EV charging)

![Day rain charging](https://raw.githubusercontent.com/stexecute/tesla-style-energy-flow/main/docs/screenshots/02-day-rain-charging.png)

Night clear (EV charging)

![Night clear charging](https://raw.githubusercontent.com/stexecute/tesla-style-energy-flow/main/docs/screenshots/03-night-clear-charging.png)

Night rain (idle)

![Night rain idle](https://raw.githubusercontent.com/stexecute/tesla-style-energy-flow/main/docs/screenshots/04-night-rain-idle.png)

Night rain (grid + home + EV)

![Night rain grid home ev](https://raw.githubusercontent.com/stexecute/tesla-style-energy-flow/main/docs/screenshots/05-night-rain-grid-home-ev.png)

## Files

- `dist/tesla-style-energy-flow.js`: packaged card file used by HACS
- `dist/backgrounds/`: packaged background assets used by HACS
- `hacs.json`: HACS metadata
- `examples/lovelace-card.yaml`: config example
- `docs/screenshots/`: preview images for README

## License

MIT

## Trademark notice

This project is an independent, community-built Home Assistant Lovelace
card. It is **not affiliated with, endorsed by, sponsored by, or in any
way officially connected to Tesla, Inc.**

"Tesla" and any related marks are trademarks of Tesla, Inc., used here
in a purely descriptive sense to indicate the visual style this card
takes inspiration from. The card does not redistribute Tesla artwork,
logos, screenshots, or any other Tesla-owned material. All graphics
shipped in `dist/backgrounds/` are original work intended to evoke a
similar aesthetic.

If you are a Tesla representative and have concerns about this project,
please open an issue and the maintainers will respond promptly.

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