chengjian-xu/pvfree

Free PV API

PV Free

A public API for PV modeling parameters and pvlib API for learning about solar.

Announcements

pvfree is moving to Microsoft Azure Cloud b/c Heroku free dyno service will end Nov 28th. Please use https://pvfree.azurewebsites.net/ from now on to get module and inverter parameters for pvlib and to learn about solar energy modeling.

Usage

Browsing to pvfree.azurewebsites.net/api/v1/pvinverter/ will display a JSON string with the first 20 records. The endpoint and query string to obtain the next set api/pvinverter/?limit=20&offset=20 is contained in the next key of the string as are the endpoints for each inverter. Note: the query string ?format=json is only necessary when using the API url directly in a browser to display the response.

Tastypie

The API is generated by the Tastypie django extension. Add the following endpoints to the base URL, https://pvfree.azurewebsites.net/:

• Get first 20 pvinverters.

    api/pvinverter/
  

• Get first pvinverter.

    api/pvinverter/1/
  

• Get pvinverter set containing #'s 2, 3, 5, and 10.

    api/pvinverter/set/2;3;5;10/
  

• Get 100 pvinverters starting from pvinverter # 500.

    api/pvinverter/?limit=100&offset=500
  

• Get pvinverter database schema.

    api/pvinverter/schema/
  

Python Requests

Python has several libraries for interacting with URLs. The Requests package is available from PyPI.

>>> import requests
>>> response = requests.get('https://pvfree.azurewebsites.net/api/v1/pvinverter/set/1;3;5/')
>>> response
  <Response [200]>
>>> response.status_code
  200
>>> response.content
  {"objects": [{"C0": -2.48104842861e-05, "C1": -9.0149429405099999e-05, "C2": 0.00066889632690700005, "C3": -0.018880466688599998, "Idcmax": 10.0, "MPPT_hi": 50.0, "MPPT_low": 20.0, "Paco": 250.0, "Pdco": 259.52205054799998, "Pnt": 0.02, "Pso": 1.7716142241299999, "Sandia_ID": 1399, "Tamb_low": -40.0, "Tamb_max": 85.0, "Vaco": 208.0, "Vdcmax": 65.0, "Vdco": 40.242603174599999, "id": 1, "manufacturer": "ABB", "name": "MICRO-0.25-I-OUTD-US-208", "numberMPPTChannels": 1, "resource_uri": "/api/v1/pvinverter/1/", "source": "CEC", "vintage": "2014-01-01", "weight": 1.6499999999999999}, ...]}