diff --git a/cmd/plan.go b/cmd/plan.go
index e97bab1..8163797 100644
--- a/cmd/plan.go
+++ b/cmd/plan.go
@@ -44,7 +44,7 @@ Example usages:
 			log.Fatal(err)
 		}
 
-		input := workdir
+		var input string
 		if len(args) != 0 {
 			input = args[0]
 			if !filepath.IsAbs(input) {
diff --git a/internal/data/data/energy_coefficients.json b/internal/data/data/energy_coefficients.json
index b3a726e..7699d28 100644
--- a/internal/data/data/energy_coefficients.json
+++ b/internal/data/data/energy_coefficients.json
@@ -1,7 +1,7 @@
 {
     "AWS": {
         "cpu_min_wh": 0.74,
-        "cpu_max_wh": 3.5,
+        "cpu_max_wh": 5.23,
         "storage_hdd_wh_tb": 0.65,
         "storage_ssd_wh_tb": 1.2,
         "networking_wh_gb": 1,
diff --git a/internal/estimate/coefficients/coefficients.go b/internal/estimate/coefficients/coefficients.go
index 6fe6df4..feb5128 100644
--- a/internal/estimate/coefficients/coefficients.go
+++ b/internal/estimate/coefficients/coefficients.go
@@ -49,6 +49,7 @@ func (cps *CoefficientsProviders) GetByProvider(provider providers.Provider) Coe
 
 func (cps *CoefficientsProviders) getByProviderName(name string) Coefficients {
 	r := reflect.ValueOf(cps)
-	coefficients := reflect.Indirect(r).FieldByName(name)
-	return coefficients.Interface().(Coefficients)
+	coefficientsVal := reflect.Indirect(r).FieldByName(name)
+	coefficients := coefficientsVal.Interface().(Coefficients)
+	return coefficients
 }
diff --git a/internal/estimate/estimate.go b/internal/estimate/estimate.go
index 82c4660..afbc0f4 100644
--- a/internal/estimate/estimate.go
+++ b/internal/estimate/estimate.go
@@ -45,7 +45,7 @@ func EstimateResources(resourceList map[string]resources.Resource) estimation.Es
 	return estimation.EstimationReport{
 		Info: estimation.EstimationInfo{
 			UnitTime:                viper.Get("unit.time").(string),
-			UnitWattTime:            fmt.Sprintf("%s%s", viper.Get("unit.power"), viper.Get("unit.time")),
+			UnitWattTime:            fmt.Sprintf("%s%s", "W", viper.Get("unit.time")),
 			UnitCarbonEmissionsTime: fmt.Sprintf("%sCO2eq/%s", viper.Get("unit.carbon"), viper.Get("unit.time")),
 			DateTime:                time.Now(),
 			InfoByProvider: map[providers.Provider]estimation.InfoByProvider{
diff --git a/internal/estimate/estimate/Energy.go b/internal/estimate/estimate/Energy.go
index 0aaa679..7af4ae4 100644
--- a/internal/estimate/estimate/Energy.go
+++ b/internal/estimate/estimate/Energy.go
@@ -18,7 +18,8 @@ func estimateWattHour(resource *resources.ComputeResource) decimal.Decimal {
 	log.Debugf("%v.%v Storage in Wh: %v", resource.Identification.ResourceType, resource.Identification.Name, storageInWh)
 	gpuEstimationInWh := EstimateWattGPU(resource)
 	log.Debugf("%v.%v GPUs in Wh: %v", resource.Identification.ResourceType, resource.Identification.Name, gpuEstimationInWh)
-	pue := coefficients.GetEnergyCoefficients().GCP.PueAverage
+	pue := coefficients.GetEnergyCoefficients().GetByProvider(resource.Identification.Provider).PueAverage
+
 	log.Debugf("%v.%v PUE %v", resource.Identification.ResourceType, resource.Identification.Name, pue)
 	rawWattEstimate := decimal.Sum(
 		cpuEstimationInWh,
diff --git a/internal/estimate/estimate/Resource.go b/internal/estimate/estimate/Resource.go
index ba8c867..c4bfada 100644
--- a/internal/estimate/estimate/Resource.go
+++ b/internal/estimate/estimate/Resource.go
@@ -1,6 +1,8 @@
 package estimate
 
 import (
+	"strings"
+
 	"github.com/carboniferio/carbonifer/internal/estimate/coefficients"
 	"github.com/carboniferio/carbonifer/internal/estimate/estimation"
 
@@ -15,56 +17,55 @@ func EstimateSupportedResource(resource resources.Resource) *estimation.Estimati
 
 	var computeResource resources.ComputeResource = resource.(resources.ComputeResource)
 	// Electric power used per unit of time
-	avgWatt := estimateWattHour(&computeResource) // Watt hour
-	if viper.Get("unit.power").(string) == "kW" {
-		avgWatt = avgWatt.Div(decimal.NewFromInt(1000))
-	}
-	if viper.Get("unit.time").(string) == "m" {
-		avgWatt = avgWatt.Mul(decimal.NewFromInt(24 * 30))
-	}
-	if viper.Get("unit.time").(string) == "y" {
-		avgWatt = avgWatt.Mul(decimal.NewFromInt(24 * 365))
-	}
-	avgWattStr := avgWatt.String()
+	// It's computed first in watt per hour
+	avgWattHour := estimateWattHour(&computeResource) // Watt hour
+	avgKWattHour := avgWattHour.Div(decimal.NewFromInt(1000))
 
 	// Regional grid emission per unit of time
+	// regionEmissions are in gCO2/kWh
 	regionEmissions, err := coefficients.RegionEmission(resource.GetIdentification().Provider, resource.GetIdentification().Region) // gCO2eq /kWh
 	if err != nil {
 		log.Fatalf("Error while getting region emissions for %v: %v", resource.GetAddress(), err)
 	}
-	if viper.Get("unit.power").(string) == "W" {
-		regionEmissions.GridCarbonIntensity = regionEmissions.GridCarbonIntensity.Div(decimal.NewFromInt(1000))
+
+	// Carbon Emissions
+	carbonEmissionInGCO2PerH := avgKWattHour.Mul(regionEmissions.GridCarbonIntensity)
+	carbonEmissionPerTime := carbonEmissionInGCO2PerH
+	if strings.ToLower(viper.GetString("unit.time")) == "d" {
+		carbonEmissionPerTime = carbonEmissionPerTime.Mul(decimal.NewFromInt(24))
 	}
-	if viper.Get("unit.time").(string) == "m" {
-		regionEmissions.GridCarbonIntensity = regionEmissions.GridCarbonIntensity.Mul(decimal.NewFromInt(24 * 30))
+	if strings.ToLower(viper.GetString("unit.time")) == "m" {
+		carbonEmissionPerTime = carbonEmissionPerTime.Mul(decimal.NewFromInt(24 * 30))
 	}
-	if viper.Get("unit.time").(string) == "y" {
-		regionEmissions.GridCarbonIntensity = regionEmissions.GridCarbonIntensity.Mul(decimal.NewFromInt(24 * 365))
+	if strings.ToLower(viper.GetString("unit.time")) == "y" {
+		carbonEmissionPerTime = carbonEmissionPerTime.Mul(decimal.NewFromInt(24 * 365))
 	}
-	if viper.Get("unit.carbon").(string) == "kg" {
-		regionEmissions.GridCarbonIntensity = regionEmissions.GridCarbonIntensity.Div(decimal.NewFromInt(1000))
+	if strings.ToLower(viper.GetString("unit.carbon")) == "kg" {
+		carbonEmissionPerTime = carbonEmissionPerTime.Div(decimal.NewFromInt(1000))
 	}
-
-	// Carbon Emissions
-	carbonEmissionPerTime := avgWatt.Mul(regionEmissions.GridCarbonIntensity)
 	carbonEmissionPerTimeStr := carbonEmissionPerTime.String()
 
 	log.Debugf(
-		"estimating resource %v.%v (%v): %v %v%v * %v %vCO2/%v%v = %v %vCO2/%v%v * %v",
+		"estimating resource %v.%v (%v): %v %v%v * %v %vCO2/%v%v = %v %vCO2/%v%v * %v = %v %vCO2/%v%v * %v",
 		computeResource.Identification.ResourceType,
 		computeResource.Identification.Name,
 		regionEmissions.Region,
-		avgWattStr,
-		viper.Get("unit.power").(string),
-		viper.Get("unit.time").(string),
+		avgKWattHour.String(),
+		"kW",
+		"h",
 		regionEmissions.GridCarbonIntensity,
-		viper.Get("unit.carbon").(string),
-		viper.Get("unit.power").(string),
-		viper.Get("unit.time").(string),
+		"g",
+		"kW",
+		"h",
+		carbonEmissionInGCO2PerH,
+		"g",
+		"kW",
+		"h",
+		resource.GetIdentification().Count,
 		carbonEmissionPerTimeStr,
-		viper.Get("unit.carbon").(string),
-		viper.Get("unit.power").(string),
-		viper.Get("unit.time").(string),
+		viper.GetString("unit.carbon"),
+		viper.GetString("unit.power"),
+		viper.GetString("unit.time"),
 		resource.GetIdentification().Count,
 	)
 
@@ -77,7 +78,7 @@ func EstimateSupportedResource(resource resources.Resource) *estimation.Estimati
 
 	est := &estimation.EstimationResource{
 		Resource:        &computeResource,
-		Power:           avgWatt.RoundFloor(10),
+		Power:           avgWattHour.RoundFloor(10),
 		CarbonEmissions: carbonEmissionPerTime.RoundFloor(10),
 		AverageCPUUsage: decimal.NewFromFloat(viper.GetFloat64("provider.gcp.avg_cpu_use")).RoundFloor(10),
 		TotalCount:      decimal.NewFromInt(count * replicationFactor),
diff --git a/internal/estimate/estimate_test.go b/internal/estimate/estimate_test.go
index 5694802..5d2bc6f 100644
--- a/internal/estimate/estimate_test.go
+++ b/internal/estimate/estimate_test.go
@@ -149,8 +149,8 @@ func TestEstimateResourceKilo(t *testing.T) {
 			args: args{resourceGCPComputeBasic},
 			want: &estimation.EstimationResource{
 				Resource:        &resourceGCPComputeBasic,
-				Power:           decimal.NewFromFloat(5472.56448).RoundFloor(10),
-				CarbonEmissions: decimal.NewFromFloat(232.4745391104).RoundFloor(10),
+				Power:           decimal.NewFromFloat(7.600784).RoundFloor(10),
+				CarbonEmissions: decimal.NewFromFloat(0.3228813043).RoundFloor(10),
 				AverageCPUUsage: decimal.NewFromFloat(avgCPUUse),
 				TotalCount:      decimal.NewFromInt(1),
 			},
@@ -160,8 +160,8 @@ func TestEstimateResourceKilo(t *testing.T) {
 			args: args{resourceGCPComputeCPUType},
 			want: &estimation.EstimationResource{
 				Resource:        &resourceGCPComputeCPUType,
-				Power:           decimal.NewFromFloat(6880.7275733647).RoundFloor(10),
-				CarbonEmissions: decimal.NewFromFloat(292.2933073165).RoundFloor(10),
+				Power:           decimal.NewFromFloat(9.5565660741).RoundFloor(10),
+				CarbonEmissions: decimal.NewFromFloat(0.4059629268).RoundFloor(10),
 				AverageCPUUsage: decimal.NewFromFloat(avgCPUUse),
 				TotalCount:      decimal.NewFromInt(1),
 			},
diff --git a/internal/terraform/terraform.go b/internal/terraform/terraform.go
index 86ea16f..b5ca11d 100644
--- a/internal/terraform/terraform.go
+++ b/internal/terraform/terraform.go
@@ -120,11 +120,23 @@ func CarboniferPlan(input string) (*map[string]interface{}, error) {
 	// If the path points to a file, run show
 	if !fileInfo.IsDir() {
 		parentDir := filepath.Dir(input)
+		// Add the .carbonifer folder in workdir
+		viper.AddConfigPath(filepath.Join(parentDir, ".carbonifer"))
 		fileName := filepath.Base(input)
 		viper.Set("workdir", parentDir)
 		tfPlan, err := terraformShow(fileName)
 		return tfPlan, err
+	} else {
+		viper.AddConfigPath(filepath.Join(input, ".carbonifer"))
 	}
+
+	// Refresh viper config
+	if err := viper.ReadInConfig(); err != nil {
+		if _, ok := err.(viper.ConfigFileNotFoundError); !ok {
+			log.Panic(err)
+		}
+	}
+
 	// If the path points to a directory, run plan
 	viper.Set("workdir", input)
 	tfPlan, err := TerraformPlan()
diff --git a/internal/utils/config.go b/internal/utils/config.go
index e2446f3..0ce99e8 100644
--- a/internal/utils/config.go
+++ b/internal/utils/config.go
@@ -56,6 +56,8 @@ func basePath() string {
 	return filepath.Join(d, "../..")
 }
 
+var WorkDir string
+
 func initViper(configFilePath string) {
 	loadViperDefaults()
 
diff --git a/test/terraform/gcp_1/provider.tf b/test/terraform/gcp_1/provider.tf
index 7fb6a3d..ee95f54 100644
--- a/test/terraform/gcp_1/provider.tf
+++ b/test/terraform/gcp_1/provider.tf
@@ -1,4 +1,5 @@
 provider "google" {
   region = "europe-west9"
+  project = "dummy-project"
 }
 
diff --git a/test/terraform/gcp_cit/provider.tf b/test/terraform/gcp_cit/provider.tf
index 7fb6a3d..ee95f54 100644
--- a/test/terraform/gcp_cit/provider.tf
+++ b/test/terraform/gcp_cit/provider.tf
@@ -1,4 +1,5 @@
 provider "google" {
   region = "europe-west9"
+  project = "dummy-project"
 }
 
diff --git a/test/terraform/gcp_gke/variables.tf b/test/terraform/gcp_gke/variables.tf
index c952a8d..4fc599e 100644
--- a/test/terraform/gcp_gke/variables.tf
+++ b/test/terraform/gcp_gke/variables.tf
@@ -2,6 +2,10 @@ variable "region" {
   default = "europe-west9"
 }
 
+variable "project" {
+  default = "dummy-project"
+}
+
 variable "project_id" {
   default = "cbf-terraform"
 }
diff --git a/test/terraform/gcp_global_module/global.tf b/test/terraform/gcp_global_module/global.tf
index 9d4d743..3f06fc5 100644
--- a/test/terraform/gcp_global_module/global.tf
+++ b/test/terraform/gcp_global_module/global.tf
@@ -1,5 +1,6 @@
 provider "google" {
   region = local.common_region
+  project = "dummy-project"
 }
 
 locals {
diff --git a/test/terraform/gcp_group/main.tf b/test/terraform/gcp_group/main.tf
index 8c2095f..dd340f8 100644
--- a/test/terraform/gcp_group/main.tf
+++ b/test/terraform/gcp_group/main.tf
@@ -38,6 +38,7 @@ resource "google_compute_instance_group_manager" "my-group-manager" {
 resource "google_compute_autoscaler" "autoscaler" {
   name   = "my-autoscaler"
   target = google_compute_instance_group_manager.my-group-manager.id
+  zone = "europe-west9-a"
 
   autoscaling_policy {
     max_replicas    = 10
diff --git a/test/terraform/gcp_group/provider.tf b/test/terraform/gcp_group/provider.tf
index 7fb6a3d..ee95f54 100644
--- a/test/terraform/gcp_group/provider.tf
+++ b/test/terraform/gcp_group/provider.tf
@@ -1,4 +1,5 @@
 provider "google" {
   region = "europe-west9"
+  project = "dummy-project"
 }
 
diff --git a/test/terraform/gcp_images/provider.tf b/test/terraform/gcp_images/provider.tf
index 7fb6a3d..ee95f54 100644
--- a/test/terraform/gcp_images/provider.tf
+++ b/test/terraform/gcp_images/provider.tf
@@ -1,4 +1,5 @@
 provider "google" {
   region = "europe-west9"
+  project = "dummy-project"
 }
 
diff --git a/test/terraform/planRaw/plan.tfplan b/test/terraform/planRaw/plan.tfplan
index e6d7ba6..bf67182 100644
Binary files a/test/terraform/planRaw/plan.tfplan and b/test/terraform/planRaw/plan.tfplan differ
diff --git a/test/terraform/planRaw/provider.tf b/test/terraform/planRaw/provider.tf
index 7fb6a3d..ee95f54 100644
--- a/test/terraform/planRaw/provider.tf
+++ b/test/terraform/planRaw/provider.tf
@@ -1,4 +1,5 @@
 provider "google" {
   region = "europe-west9"
+  project = "dummy-project"
 }