Parser for Amber Electric JSON electricity pricing data found at https://api.amberelectric.com.au/prices/listprices
https://www.amberelectric.com.au/
Amber is an Australian Electricity Retailer passing through real-time wholesale pricing. This allows IoT enabled devices to switch on and off energy hungry loads based on price signals from the market. For example, I am using it to control charging of an Electric Vehicle.
Example output:
# ./amber -p 5000 -i
JSON File Parser
Amber Electric
Current NEM Time 2021-03-08 12:28:25
Postcode 5000
Network Provider SA Power
Daily Charges:
Fixed Network Charge 51.24 c/day
Basic Metering Charge 0.00 c/day
Additional Smart Meter Charge 41.56 c/day
Amber Price 32.88 c/day
Total Daily Price 125.67 c/day
Per kWh unit Charges:
Network Charges 15.158 c/kWh
Market Charges 2.678 c/kWh
100 percent Green Power Offset 4.247 c/kWh
Carbon Neutral Offset 0.110 c/kWh
Total 17.946 c/kWh
Renewables 104 percent
Loss Factor 1.10606
Wholesale Spot Market Price 2.42 c/kWh
Total Price 20.6 c/kWh
All prices include GST
Code is written in C and designed with the intention be transferred to embedded MCU such as the ESP32: https://github.com/craigpeacock/ESP32_DINTimeSwitch
This code uses the following libraries
- cURL (https://curl.haxx.se/)
- Requires OpenSSL for https support (https://www.openssl.org/)
- cJSON (https://github.com/DaveGamble/cJSON)
$ wget https://www.openssl.org/source/openssl-1.1.1i.tar.gz
$ tar -xzf openssl-1.1.1i.tar.gz
$ cd openssl-1.1.1i/
$ ./config
$ make
$ sudo make install$ wget https://curl.se/download/curl-7.74.0.tar.gz
$ tar -xzf curl-7.74.0.tar.gz
$ cd curl-7.74.0.tar.gz
$ make
$ sudo make install$ wget https://github.com/DaveGamble/cJSON/archive/v1.7.14.tar.gz
$ tar -xzf curl-7.74.0.tar.gz
$ cd curl-7.74.0/
$ make
$ sudo make installIf you get the following error message
error while loading shared libraries: libcjson.so.1: cannot open shared object file: No such file or directory
execute
$ ldconfig -v
If you get this message
curl_easy_perform() failed: Unsupported protocol
It may be because curl hasn't been compiled with SSL. Run
$ curl -V
and check if https is listed as a protocol.
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