diff --git a/scripts/ev_charging_simulator.py b/scripts/ev_charging_simulator.py
new file mode 100644
index 0000000..08e47d8
--- /dev/null
+++ b/scripts/ev_charging_simulator.py
@@ -0,0 +1,251 @@
+#!/usr/bin/env python3
+"""
+Cariflex - EV Charging Session Simulator
+Simulates realistic charging sessions synchronized across FM, CitrineOS, and Grafana.
+"""
+
+import asyncio, json, logging, os, random, re
+from datetime import datetime, timezone, timedelta
+import requests
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger("cariflex-ev-simulator")
+
+FM_HOST = os.getenv("FM_HOST", "https://cariflex.digitribe.fr")
+FM_EMAIL = os.getenv("FM_EMAIL", "admin@digitribe.fr")
+FM_PWD = os.getenv("FM_PWD", "Digitribe972")
+CITRINEOS_URL = os.getenv("CITRINEOS_URL", "http://cariflex-citrineos-server:8080")
+
+# EVSE configuration: sensor_id -> (cp_id, max_power_kw, location)
+EVSE_CONFIG = {
+    61: {"cp_id": "CP001", "max_power": 22, "location": "Fort-de-France Centre"},
+    62: {"cp_id": "CP002", "max_power": 22, "location": "Lamentin"},
+    63: {"cp_id": "CP003", "max_power": 22, "location": "Sainte-Marie"},
+    64: {"cp_id": "CP004", "max_power": 22, "location": "Ducos"},
+    65: {"cp_id": "CP005", "max_power": 22, "location": "Le Robert"},
+    66: {"cp_id": "CP006", "max_power": 11, "location": "Fort-de-France Sud"},
+    67: {"cp_id": "CP007", "max_power": 11, "location": "Lamentin Nord"},
+    68: {"cp_id": "CP008", "max_power": 11, "location": "Sainte-Marie Nord"},
+    69: {"cp_id": "CP009", "max_power": 11, "location": "Ducos Sud"},
+    70: {"cp_id": "CP010", "max_power": 11, "location": "Le Robert Nord"},
+}
+
+# Session state for each EVSE
+sessions = {}
+
+
+class ChargingSession:
+    """Represents a single EV charging session."""
+    
+    def __init__(self, sensor_id, cp_id, max_power, location):
+        self.sensor_id = sensor_id
+        self.cp_id = cp_id
+        self.max_power = max_power
+        self.location = location
+        self.session_id = f"SESS-{cp_id}-{datetime.now().strftime('%Y%m%d%H%M%S')}"
+        self.vehicle_id = f"VEH-{random.randint(1000, 9999)}"
+        self.start_time = datetime.now(timezone.utc)
+        self.soc_start = random.uniform(10, 40)  # Start SOC 10-40%
+        self.soc_target = random.uniform(70, 90)  # Target SOC 70-90%
+        self.soc_current = self.soc_start
+        self.energy_capacity = random.choice([40, 50, 60, 75, 100])  # kWh battery
+        self.status = "Charging"  # Charging, Paused, Completed
+        self.current_power = 0.0
+        self.total_energy = 0.0
+    
+    def update(self, price, load_control):
+        """Update session state based on price and load control."""
+        if self.status == "Completed":
+            return False
+        
+        # Calculate power based on price and load control
+        if price > 150:  # Very expensive - pause charging
+            self.current_power = 0
+            self.status = "Paused"
+        elif price > 100:  # Expensive - reduce power
+            self.current_power = self.max_power * 0.3 * (1 - load_control)
+            self.status = "Charging"
+        elif price > 50:  # Medium - normal charging
+            self.current_power = self.max_power * 0.7 * (1 - load_control)
+            self.status = "Charging"
+        else:  # Cheap - full power
+            self.current_power = self.max_power * (1 - load_control)
+            self.status = "Charging"
+        
+        # Update SOC
+        if self.current_power > 0:
+            energy_added = self.current_power * (5/60)  # 5 min interval
+            self.total_energy += energy_added
+            soc_increase = (energy_added / self.energy_capacity) * 100
+            self.soc_current = min(self.soc_current + soc_increase, self.soc_target)
+        
+        # Check if charging complete
+        if self.soc_current >= self.soc_target:
+            self.status = "Completed"
+            self.current_power = 0
+        
+        return True
+    
+    def to_fm_data(self):
+        """Convert to FM sensor data format."""
+        return {
+            "sensor_id": self.sensor_id,
+            "value": round(self.current_power, 2),
+            "unit": "kW",
+            "start": datetime.now(timezone.utc).isoformat(),
+            "duration": "PT5M",
+        }
+    
+    def to_citrineos_data(self):
+        """Convert to CitrineOS meter value format."""
+        return {
+            "connectorId": 1,
+            "transactionId": self.session_id,
+            "meterValue": [{
+                "timestamp": datetime.now(timezone.utc).isoformat(),
+                "sampledValue": [
+                    {"value": str(int(self.current_power * 1000)), "measurand": "Power.Active.Import", "unit": "W"},
+                    {"value": str(int(self.soc_current)), "measurand": "SoC", "unit": "%"},
+                    {"value": str(int(self.total_energy * 1000)), "measurand": "Energy.Active.Import.Register", "unit": "Wh"},
+                ]
+            }]
+        }
+
+
+fm_session = None
+
+
+def fm_login():
+    global fm_session
+    try:
+        s = requests.Session(); s.verify = False
+        r = s.get(f"{FM_HOST}/login")
+        m = re.search(r'csrf_token[^>]*value="([^"]+)"', r.text)
+        if m:
+            csrf = m.group(1)
+            r = s.post(f"{FM_HOST}/login", data={
+                "email": FM_EMAIL, "password": FM_PWD,
+                "csrf_token": csrf, "remember": "y"
+            }, allow_redirects=True)
+            if "dashboard" in r.url:
+                fm_session = s
+                return True
+    except Exception as e:
+        logger.error(f"FM login: {e}")
+    return False
+
+
+def post_fm_data(sensor_id, value, unit, start, duration="PT5M"):
+    """Post sensor data to FlexMeasures."""
+    if not fm_session:
+        return False
+    try:
+        r = fm_session.post(
+            f"{FM_HOST}/api/v3_0/sensors/{sensor_id}/data",
+            json={"values": [value], "start": start, "duration": duration, "unit": unit},
+            timeout=30
+        )
+        return r.status_code in [200, 201, 202]
+    except Exception as e:
+        logger.error(f"FM post: {e}")
+        return False
+
+
+def get_price():
+    """Get current price from FM (sensor 84 - OpenADR)."""
+    if not fm_session:
+        return 80.0
+    try:
+        r = fm_session.get(f"{FM_HOST}/api/v3_0/sensors/84/data?limit=1")
+        if r.status_code == 200:
+            data = r.json()
+            if data and len(data) > 0:
+                return float(data[-1].get("event_value", 80))
+    except Exception as e:
+        logger.error(f"Price: {e}")
+    return 80.0
+
+
+def get_load_control():
+    """Get current load control signal from FM (sensor 86)."""
+    if not fm_session:
+        return 0.0
+    try:
+        r = fm_session.get(f"{FM_HOST}/api/v3_0/sensors/86/data?limit=1")
+        if r.status_code == 200:
+            data = r.json()
+            if data and len(data) > 0:
+                return float(data[-1].get("event_value", 0))
+    except Exception as e:
+        logger.error(f"Load control: {e}")
+    return 0.0
+
+
+async def simulate_sessions():
+    """Main simulation loop."""
+    global sessions
+    
+    logger.info("EV Charging Session Simulator starting")
+    fm_login()
+    
+    # Initialize sessions for each EVSE
+    for sensor_id, config in EVSE_CONFIG.items():
+        # Randomly start with some sessions active
+        if random.random() < 0.6:  # 60% chance of active session
+            sessions[sensor_id] = ChargingSession(
+                sensor_id, config["cp_id"], config["max_power"], config["location"]
+            )
+            logger.info(f"Started session on {config['cp_id']} ({config['location']})")
+    
+    logger.info(f"Initial sessions: {len(sessions)}")
+    
+    while True:
+        try:
+            price = get_price()
+            load_control = get_load_control()
+            
+            active_count = 0
+            completed_sessions = []
+            
+            for sensor_id, session in sessions.items():
+                # Update session
+                session.update(price, load_control)
+                
+                if session.status in ["Charging", "Paused"]:
+                    active_count += 1
+                
+                # Post to FM
+                data = session.to_fm_data()
+                post_fm_data(data["sensor_id"], data["value"], data["unit"], data["start"])
+                
+                # Check if completed
+                if session.status == "Completed":
+                    completed_sessions.append(sensor_id)
+                    logger.info(f"Session completed: {session.cp_id} - SOC: {session.soc_current:.1f}%, Energy: {session.total_energy:.1f} kWh")
+            
+            # Remove completed sessions
+            for sensor_id in completed_sessions:
+                del sessions[sensor_id]
+            
+            # Start new sessions for idle EVSEs
+            for sensor_id, config in EVSE_CONFIG.items():
+                if sensor_id not in sessions and random.random() < 0.1:  # 10% chance per cycle
+                    sessions[sensor_id] = ChargingSession(
+                        sensor_id, config["cp_id"], config["max_power"], config["location"]
+                    )
+                    logger.info(f"New session on {config['cp_id']} - Vehicle: {sessions[sensor_id].vehicle_id}")
+            
+            # Log status
+            charging = sum(1 for s in sessions.values() if s.status == "Charging")
+            paused = sum(1 for s in sessions.values() if s.status == "Paused")
+            logger.info(f"Sessions: {len(sessions)} total, {charging} charging, {paused} paused | Price: {price} EUR/MWh | Load control: {load_control}")
+            
+        except Exception as e:
+            logger.error(f"Simulation error: {e}")
+            fm_login()
+        
+        await asyncio.sleep(300)  # 5 minutes
+
+
+if __name__ == "__main__":
+    asyncio.run(simulate_sessions())