diff --git a/meter/tibber/types.go b/meter/tibber/types.go
index 00fe38e92..33d24b836 100644
--- a/meter/tibber/types.go
+++ b/meter/tibber/types.go
@@ -24,7 +24,7 @@ type Address struct {
 type Subscription struct {
 	ID        string
 	Status    string
-	PriceInfo PriceInfo
+	PriceInfo PriceInfo `graphql:"priceInfo(resolution: QUARTER_HOURLY)"`
 }
 
 type PriceInfo struct {
diff --git a/tariff/tibber.go b/tariff/tibber.go
index 1d4a0940b..ee93c9347 100644
--- a/tariff/tibber.go
+++ b/tariff/tibber.go
@@ -115,7 +115,7 @@ func (t *Tibber) rates(pi []tibber.Price) api.Rates {
 		}
 		ar := api.Rate{
 			Start: r.StartsAt.Local(),
-			End:   r.StartsAt.Add(time.Hour).Local(),
+			End:   r.StartsAt.Add(SlotDuration).Local(),
 			Value: price,
 		}
 		data = append(data, ar)