diff --git a/cmd/energyd/energyd.go b/cmd/energyd/energyd.go
index 9df6e94..94edbc1 100644
--- a/cmd/energyd/energyd.go
+++ b/cmd/energyd/energyd.go
@@ -1,9 +1,11 @@
 package main
 
 import (
+	"context"
 	"flag"
 	"log"
 	"os"
+	"os/signal"
 	"runtime/pprof"
 
 	"github.com/amigan/energyd/internal/config"
@@ -27,5 +29,11 @@ func main() {
 
 	ic := isoclient.New(cfg)
 
-	energy.Compute(ic)
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt)
+	defer stop()
+
+	ener := energy.New(ic)
+	go ener.Go(ctx)
+	<-ctx.Done()
+	log.Printf("shutting down\n")
 }
diff --git a/internal/config/config.go b/internal/config/config.go
index 42d3293..9662e35 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -20,8 +20,8 @@ func Config() *Conf {
 	}
 
 	return &Conf{
-		ISOUser: viper.Get("isouser").(string),
-		ISOPassword: viper.Get("isopassword").(string),
+		ISOUser: viper.Get("iso.user").(string),
+		ISOPassword: viper.Get("iso.password").(string),
 	}
 }
 
diff --git a/pkg/energy/energy.go b/pkg/energy/energy.go
index 1dfc541..26e581f 100644
--- a/pkg/energy/energy.go
+++ b/pkg/energy/energy.go
@@ -1,6 +1,7 @@
 package energy
 
 import (
+	"context"
 	"fmt"
 	"math"
 	"time"
@@ -8,6 +9,10 @@ import (
 	"github.com/amigan/energyd/pkg/isoclient"
 )
 
+type Energy struct {
+	iso isoclient.Client
+}
+
 type LoadProfile struct {
 	Current int
 	Peak int
@@ -19,7 +24,9 @@ type LoadProfile struct {
 	HoursAway int
 }
 
-func Compute(ic isoclient.Client) {
+func (e *Energy) Compute() {
+	ic := e.iso
+
 	load, err := ic.GetCurrentLoad()
 	if err != nil {
 		panic(err)
@@ -53,5 +60,23 @@ func Compute(ic isoclient.Client) {
 	lp.PctPeak = int(float32(load.LoadMW / float32(lp.Peak)) * 100)
 	lp.HoursAway = int(math.Abs(float64(hour) - float64(lp.PeakHr)))
 	fmt.Printf("lp %#v\n", lp)
-
+}
+
+func (e *Energy) Go(ctx context.Context) {
+	tick := time.NewTicker(time.Minute*15)
+	e.Compute()
+	for {
+		select {
+		case <-tick.C:
+			e.Compute()
+		case <-ctx.Done():
+			return
+		}
+	}
+}
+
+func New(ic isoclient.Client) *Energy {
+	return &Energy{
+		iso: ic,
+	}
 }