sub pv_leistung {
				
my $ua = LWP::UserAgent->new;
my $response = $ua->get("http://192.168.1.4/solar_api/v1/GetInverterRealtimeData.cgi?Scope=System");
my $content = parse_json ($response->decoded_content);

return $content->{'Body'}->{'Data'}->{'PAC'}->{'Values'}->{'1'};
}