Following these steps will allow you to integrate this API into the openHAB home automation system.
This enables you to make decisions based on the current or future energy price.

Steps

1. Create the three required openHAB items PVPCServer_current_price, PVPCServer_Currentpricerating and PVPCServer_Timestampforcurrentprice
2. Add this script in the “Scripts” section of the settings, make sure to update your credentials (API-Key and API-Host)
3. Run it hourly and at start up.

Script

(function() {
const response = actions.HTTP.sendHttpGetRequest('https://pvpc-hourly-spanish-energy-prices-api.p.rapidapi.com/price/0/peninsular', {
    'X-RapidAPI-Key': '**YOUR-RAPID-API-KEY**',
    'X-RapidAPI-Host': '**YOUR-RAPID-API-HOST**'
}, 10000);
const parsed = JSON.parse(response);

const currentPriceItem = items.getItem('PVPCServer_current_price');
currentPriceItem.postUpdate(parseFloat(parsed['price']));

const currentPriceRating = items.getItem('PVPCServer_Currentpricerating');
currentPriceRating.postUpdate(parsed['price_rating']);

const currentPriceTimeStamp = items.getItem('PVPCServer_Timestampforcurrentprice');
currentPriceTimeStamp.postUpdate(parsed['time']);
})();

Update rule

configuration: {}
triggers:

• id: "1"
  configuration:
  cronExpression: 0 0 * * * ? *
  type: timer.GenericCronTrigger
• id: "3"
  configuration:
  startlevel: 100
  type: core.SystemStartlevelTrigger
  conditions: []
  actions:
• inputs: {}
  id: "2"
  configuration:
  considerConditions: true
  ruleUIDs:
  - YOUR_RULE_ID
  type: core.RunRuleAction