diff --git a/sma/integrationpluginsma.cpp b/sma/integrationpluginsma.cpp
index c286a5d..d504725 100644
--- a/sma/integrationpluginsma.cpp
+++ b/sma/integrationpluginsma.cpp
@@ -63,7 +63,7 @@ void IntegrationPluginSma::discoverThings(ThingDiscoveryInfo *info)
             webBoxDiscovery->deleteLater();
             ThingDescriptors descriptors;
             foreach (const NetworkDeviceInfo &networkDeviceInfo, webBoxDiscovery->discoveryResults()) {
-                QString title = networkDeviceInfo.hostName() + " (" + networkDeviceInfo.address().toString() + ")";
+                QString title = "SMA Sunny WebBox (" + networkDeviceInfo.address().toString() + ")";
                 QString description;
                 if (networkDeviceInfo.macAddressManufacturer().isEmpty()) {
                     description = networkDeviceInfo.macAddress();
@@ -290,13 +290,12 @@ void IntegrationPluginSma::setupThing(ThingSetupInfo *info)
 
         QString requestId = sunnyWebBox->getPlantOverview();
         connect(sunnyWebBox, &SunnyWebBox::plantOverviewReceived, info, [=] (const QString &messageId, SunnyWebBox::Overview overview) {
-            qCDebug(dcSma()) << "Received plant overview" << messageId << "Finish setup";
-            Q_UNUSED(overview)
-
+            qCDebug(dcSma()) << "Received plant overview" << messageId << "finish setup";
             info->finish(Thing::ThingErrorNoError);
             connect(sunnyWebBox, &SunnyWebBox::connectedChanged, this, &IntegrationPluginSma::onConnectedChanged);
             connect(sunnyWebBox, &SunnyWebBox::plantOverviewReceived, this, &IntegrationPluginSma::onPlantOverviewReceived);
             m_sunnyWebBoxes.insert(info->thing(), sunnyWebBox);
+            onPlantOverviewReceived(messageId, overview);
         });
 
     } else if (thing->thingClassId() == speedwireMeterThingClassId) {
@@ -569,7 +568,7 @@ void IntegrationPluginSma::onPlantOverviewReceived(const QString &messageId, Sun
     if (!thing)
         return;
 
-    thing->setStateValue(sunnyWebBoxCurrentPowerStateTypeId, overview.power);
+    thing->setStateValue(sunnyWebBoxCurrentPowerStateTypeId, -overview.power);
     thing->setStateValue(sunnyWebBoxDayEnergyProducedStateTypeId, overview.dailyYield);
     thing->setStateValue(sunnyWebBoxTotalEnergyProducedStateTypeId, overview.totalYield);
     thing->setStateValue(sunnyWebBoxModeStateTypeId, overview.status);
@@ -587,9 +586,9 @@ void IntegrationPluginSma::setupRefreshTimer()
 
     m_refreshTimer = hardwareManager()->pluginTimerManager()->registerTimer(5);
     connect(m_refreshTimer, &PluginTimer::timeout, this, [=](){
-        foreach (Thing *thing, myThings().filterByThingClassId(sunnyWebBoxThingClassId)) {
-            SunnyWebBox *sunnyWebBox = m_sunnyWebBoxes.value(thing);
-            sunnyWebBox->getPlantOverview();
+        foreach (SunnyWebBox *webbox, m_sunnyWebBoxes) {
+            // Max refresh rate according to docs should be 30 seconds, will be handled in the webbox class
+            webbox->getPlantOverview();
         }
 
         foreach (SpeedwireInverter *inverter, m_speedwireInverters) {
diff --git a/sma/sunnywebbox/sunnywebbox.cpp b/sma/sunnywebbox/sunnywebbox.cpp
index d148ea2..b75f096 100644
--- a/sma/sunnywebbox/sunnywebbox.cpp
+++ b/sma/sunnywebbox/sunnywebbox.cpp
@@ -37,8 +37,8 @@
 
 SunnyWebBox::SunnyWebBox(NetworkAccessManager *networkAccessManager, const QHostAddress &hostAddress,  QObject *parrent) :
     QObject(parrent),
-    m_hostAddresss(hostAddress),
-    m_networkManager(networkAccessManager)
+    m_networkManager(networkAccessManager),
+    m_hostAddresss(hostAddress)
 {
     qCDebug(dcSma()) << "SunnyWebBox: Creating Sunny Web Box connection";
 }
@@ -50,6 +50,16 @@ SunnyWebBox::~SunnyWebBox()
 
 QString SunnyWebBox::getPlantOverview()
 {
+    QDateTime currentDateTime = QDateTime::currentDateTime();
+
+    if (!m_lastRequest.isNull()) {
+        // According to the documentation, the interval between 2 requests should not be less than 30 seconds.
+        if (QDateTime::currentDateTime().toMSecsSinceEpoch() - m_lastRequest.toMSecsSinceEpoch() < 30000) {
+            return QString();
+        }
+    }
+
+    m_lastRequest = currentDateTime;
     return sendMessage(m_hostAddresss, "GetPlantOverview");
 }
 
@@ -163,10 +173,10 @@ QNetworkReply *SunnyWebBox::sendRequest(const QHostAddress &address, const QStri
     doc.setObject(obj);
 
     QUrl url;
+    url.setScheme("http");
     url.setHost(address.toString());
     url.setPath("/rpc");
     url.setPort(80);
-    url.setScheme("http");
     QNetworkRequest request(url);
     request.setHeader(QNetworkRequest::KnownHeaders::ContentTypeHeader, "application/json");
     QByteArray data = doc.toJson(QJsonDocument::JsonFormat::Compact);
@@ -309,6 +319,7 @@ QString SunnyWebBox::sendMessage(const QHostAddress &address, const QString &pro
             setConnectionStatus(false);
             return;
         }
+
         setConnectionStatus(true);
 
         QByteArray data = reply->readAll();
diff --git a/sma/sunnywebbox/sunnywebbox.h b/sma/sunnywebbox/sunnywebbox.h
index 9981aeb..9446530 100644
--- a/sma/sunnywebbox/sunnywebbox.h
+++ b/sma/sunnywebbox/sunnywebbox.h
@@ -38,11 +38,11 @@
 #include <QJsonObject>
 #include <QHostAddress>
 #include <QUdpSocket>
+#include <QDateTime>
 
 class SunnyWebBox : public QObject
 {
     Q_OBJECT
-
 public:
     struct Overview {
         int power;
@@ -96,10 +96,11 @@ public:
     static QString generateRequestId();
 
 private:
+    NetworkAccessManager *m_networkManager = nullptr;
     bool m_connected = false;
     QHostAddress m_hostAddresss;
     QString m_macAddress;
-    NetworkAccessManager *m_networkManager = nullptr;
+    QDateTime m_lastRequest;
 
     QString sendMessage(const QHostAddress &address, const QString &procedure);
     QString sendMessage(const QHostAddress &address, const QString &procedure, const QJsonObject &params);