diff --git a/README.md b/README.md
index f69634fd4..dad1937b3 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ EVCC is an extensible EV Charge Controller with PV integration implemented in [G
 - multiple [chargers](#charger): Wallbe, Phoenix (includes ESL Walli), go-eCharger, NRGkick (direct Bluetooth or via Connect device), SimpleEVSE, EVSEWifi, KEBA/BMW, openWB, Mobile Charger Connect, and any other charger using scripting
 - multiple [meters](#meter): ModBus (Eastron SDM, MPM3PM, SBC ALE3 and many more), Discovergy (using HTTP plugin), SMA Home Manager 2.0 and SMA Energy Meter, KOSTAL Smart Energy Meter (KSEM, EMxx), any Sunspec-compatible inverter or home battery devices (Fronius, SMA, SolarEdge, KOSTAL, STECA, E3DC), Tesla PowerWall
 - wide support of vendor-specific [vehicles](#vehicle) interfaces (remote charge, battery and preconditioning status): Audi, BMW, Ford, Tesla, Nissan, Renault, Porsche, Volkswagen and any other vehicle using scripting
-- [plugins](#plugins) for integrating with hardware devices and home automation: Modbus (meters and grid inverters), MQTT and shell scripts
+- [plugins](#plugins) for integrating with hardware devices and home automation: Modbus (meters and grid inverters), HTTP, MQTT, Javascript, WebSockets and shell scripts
 - status notifications using [Telegram](https://telegram.org) and [PushOver](https://pushover.net)
 - logging using [InfluxDB](https://www.influxdata.com) and [Grafana](https://grafana.com/grafana/)
 - soft ramp-up/ramp-down of charge current ensures contactor only switched at minimum current
@@ -42,9 +42,11 @@ EVCC is an extensible EV Charge Controller with PV integration implemented in [G
 - [Plugins](#plugins)
   - [Modbus](#modbus-read-only)
   - [MQTT](#mqtt-readwrite)
-  - [Script](#script-readwrite)
   - [HTTP](#http-readwrite)
   - [Websocket](#websocket-read-only)
+  - [Javascript](#javascript-readwrite)
+  - [Shell Script](#shell-script-readwrite)
+  - [Calc (meter aggregation)](#calc-read-only)
   - [Combined status](#combined-status-read-only)
 - [API](#api)
 - [Background](#background)
@@ -250,32 +252,6 @@ Plugins are used to integrate various devices and external data sources with EVC
 
 Plugins support both *read* and *write* access. When using plugins for *write* access, the actual data is provided as variable in form of `${var[:format]}`. If `format` is omitted, data is formatted according to the default Go `%v` [format](https://golang.org/pkg/fmt/). The variable is replaced with the actual data before the plugin is executed.
 
-### Calc (read only)
-
-The `calc` plugin allows calculating the sum of other plugins:
-
-```yaml
-type: calc
-add:
-- type: ...
-  ...
-- type: ...
-  ...
-```
-
-The `calc` plugin is useful e.g. to combine power values if import and export power are separate like with S0 meters. Use `scale` on one of the elements to implement a subtraction.
-
-### Javascript (read only)
-
-The `js` plugin is able to execute Javascript code from the `script` tag. Useful for quick prototyping:
-
-```yaml
-type: js
-script: |
-  var res = 500;
-  2 * res; // returns 1000
-```
-
 ### Modbus (read only)
 
 The `modbus` plugin is able to read data from any Modbus meter or SunSpec-compatible solar inverter. Many meters are already pre-configured (see [MBMD Supported Devices](https://github.com/volkszaehler/mbmd#supported-devices)).
@@ -382,26 +358,6 @@ payload: ${var:%d}
 
 For write access, the data is provided using the `payload` attribute. If `payload` is missing, the value will be written in default format.
 
-### Script (read/write)
-
-The `script` plugin executes external scripts to read or update data. This plugin is useful to implement any type of external functionality.
-
-Sample read configuration:
-
-```yaml
-type: script
-cmd: /bin/bash -c "cat /dev/urandom"
-timeout: 5s
-```
-
-Sample write configuration:
-
-```yaml
-type: script
-cmd: /home/user/my-script.sh ${enable:%b} # format boolean enable as 0/1
-timeout: 5s
-```
-
 ### HTTP (read/write)
 
 The `http` plugin executes HTTP requests to read or update data. Includes the ability to read and parse JSON using jq-like queries for REST apis.
@@ -444,6 +400,63 @@ scale: 0.001 # floating point factor applied to result, e.g. for Wh to kWh conve
 timeout: 30s # error if no update received in 30 seconds
 ```
 
+### Javascript (read/write)
+
+EVCC includes a bundled Javascript interpreter with Underscore.js library installed. The `js` plugin is able to execute Javascript code from the `script` tag. Useful for quick prototyping:
+
+```yaml
+type: js
+script: |
+  var res = 500;
+  2 * res; // returns 1000
+```
+
+When using the `js` plugin for writing, the value to write is handed to the script as pre-populated variable:
+
+```yaml
+charger:
+- type: generic
+  maxcurrent:
+    type: js
+    script: |
+      console.log(maxcurrent);
+```
+
+### Shell Script (read/write)
+
+The `script` plugin executes external scripts to read or update data. This plugin is useful to implement any type of external functionality.
+
+Sample read configuration:
+
+```yaml
+type: script
+cmd: /bin/bash -c "cat /dev/urandom"
+timeout: 5s
+```
+
+Sample write configuration:
+
+```yaml
+type: script
+cmd: /home/user/my-script.sh ${enable:%b} # format boolean enable as 0/1
+timeout: 5s
+```
+
+### Calc (read only)
+
+The `calc` plugin allows calculating the sum of other plugins:
+
+```yaml
+type: calc
+add:
+- type: ...
+  ...
+- type: ...
+  ...
+```
+
+The `calc` plugin is useful e.g. to combine power values if import and export power are separate like with S0 meters. Use `scale: -1` on one of the elements to implement a subtraction or `scale: 1000` to implement Wh to kWh conversion.
+
 ### Combined status (read only)
 
 The `combined` status plugin is used to convert a mixed boolean status of plugged/charging into an EVCC-compatible charger status of A..F. It is typically used together with OpenWB MQTT integration.