diff --git a/src/core/electric_utility.jl b/src/core/electric_utility.jl
index 3a5f9d615..99d8fa11e 100644
--- a/src/core/electric_utility.jl
+++ b/src/core/electric_utility.jl
@@ -49,8 +49,8 @@
     cambium_scenario::String = "Mid-case", # Cambium Scenario for evolution of electricity sector (see Cambium documentation for descriptions). Default: "Mid-case".
         ## Options: ["Mid-case", "Low Renewable Energy and Battery Costs", "High Renewable Energy and Battery Costs", "Electricifcation", "Low Natural Gas Price", "High Natural Gas Price", "Mid-case with 95% Decarbonization by 2050", "Mid-case with 100% Decarbonization by 2035", "Mid-case (with tax credit phaseout)", "Low Renewable Energy and Battery Costs (with tax credit phaseout)"]     
     cambium_location_type::String =  "States", # Geographic boundary at which emissions are calculated. Default: "States". Options: ["Nations", "GEA Regions", "States", "Balancing Areas"] # TODO: some may not work 
-    cambium_metric_col::String =  "lrmer_co2e", # Emissions metric. Default: "lrmer_co2e" - Long-run marginal emissions rate for CO2-equivalant, combined combustion and pre-combustion emissions rates. Options: See metric definitions and names in the Cambium documentation
-    cambium_start_year::Int = 2024, # First year of operation of system. Default: 2024 # Options: any year now through 2050.
+    cambium_metric_col::String =  "lrmer_co2e", # Emissions metric used. Default: "lrmer_co2e" - Long-run marginal emissions rate for CO2-equivalant, combined combustion and pre-combustion emissions rates. Options: See metric definitions and names in the Cambium documentation
+    cambium_start_year::Int = 2024, # First year of operation of system. Emissions will be levelized starting in this year for the duration of cambium_levelization_years.  Default: 2024 # Options: any year 2023 through 2050.
     cambium_levelization_years::Int = analysis_years, # Expected lifetime or analysis period of the intervention being studied. Emissions will be averaged over this period. Default: analysis_years (from Financial struct)
 
     # Climate Option 2: Use CO2 emissions data from the EPA's AVERT based on the AVERT emissions region and specify annual percent decrease
@@ -206,7 +206,7 @@ struct ElectricUtility
 
         is_MPC = isnothing(latitude) || isnothing(longitude)
         cambium_emissions_region = "NA - Cambium data not used for climate emissions" # will be overwritten if Cambium is used
-
+        
         if !is_MPC
             # Get AVERT emissions region
             if avert_emissions_region == ""
@@ -234,6 +234,10 @@ struct ElectricUtility
                     throw(@error("The provided ElectricUtility emissions factor series for $(ekey) does not match the time_steps_per_hour."))
                 else # if not user-provided, get emissions factors from AVERT and/or Cambium
                     if ekey == "CO2" && co2_from_avert == false # Use Cambium for CO2
+                        if cambium_start_year < 2023 || cambium_start_year > 2050
+                            @warn("The cambium_start_year must be between 2023 and 2050. Setting to cambium_start_year to 2024.")
+                            cambium_start_year = 2024
+                        end
                         try
                             cambium_response_dict = cambium_emissions_profile( # Adjusted for day of week alignment with load
                                     scenario = cambium_scenario, 
@@ -552,6 +556,8 @@ function cambium_emissions_profile(; scenario::String,
     )
 
     try
+        print("\n\n***CALLING CAMBIUM API***\n\n")
+
         r = HTTP.post(url, [], HTTP.Form(payload))
         response = JSON.parse(String(r.body))
         # print("\n", response["status"], "\n")
diff --git a/src/results/electric_utility.jl b/src/results/electric_utility.jl
index 8533a1659..56793f293 100644
--- a/src/results/electric_utility.jl
+++ b/src/results/electric_utility.jl
@@ -40,9 +40,9 @@
 - `lifecycle_emissions_tonnes_NOx` # Total tons of NOx emissions associated with the site's grid-purchased electricity over the analysis period. If include_exported_elec_emissions_in_total is False, this value only reflects grid purchaes. Otherwise, it accounts for emissions offset from any export to the grid.
 - `lifecycle_emissions_tonnes_SO2` # Total tons of SO2 emissions associated with the site's grid-purchased electricity over the analysis period. If include_exported_elec_emissions_in_total is False, this value only reflects grid purchaes. Otherwise, it accounts for emissions offset from any export to the grid.
 - `lifecycle_emissions_tonnes_PM25` # Total tons of PM2.5 emissions associated with the site's grid-purchased electricity over the analysis period. If include_exported_elec_emissions_in_total is False, this value only reflects grid purchaes. Otherwise, it accounts for emissions offset from any export to the grid.
-- `avert_emissions_region` # EPA AVERT region of the site. Used for health-related emissions from grid electricity (populated if default emissions values are used). 
-- `distance_to_avert_emissions_region_meters`
-- `cambium_emissions_region` # NREL Cambium region of the site. Used for climate-related emissions from grid electricity (populated if default climate emissions values are used)
+- `avert_emissions_region` # EPA AVERT region of the site. Used for health-related emissions from grid electricity (populated if default emissions values are used) and climate emissions if "co2_from_avert" is set to true. 
+- `distance_to_avert_emissions_region_meters` # Distance in meters from the site to the nearest AVERT emissions region.
+- `cambium_emissions_region` # NREL Cambium region of the site. Used for climate-related emissions from grid electricity (populated only if default (Cambium) climate emissions values are used)
 
 !!! note "'Series' and 'Annual' energy and emissions outputs are average annual"
 	REopt performs load balances using average annual production values for technologies that include degradation.