diff --git a/src/ElectricField/ElectricField.jl b/src/ElectricField/ElectricField.jl
index 0a42f7928..137c8e56c 100644
--- a/src/ElectricField/ElectricField.jl
+++ b/src/ElectricField/ElectricField.jl
@@ -49,12 +49,12 @@ Base.convert(T::Type{ElectricField}, x::NamedTuple) = T(x)
 
 
 
-function ElectricField(epot::ElectricPotential{T, 3, S}, point_types::PointTypes{T}) where {T, S}
-    return ElectricField{T, 3, S, typeof(grid.axes)}(get_electric_field_from_potential( epot, point_types ), epot.grid)
+function ElectricField(epot::ElectricPotential{T, 3, S}, point_types::PointTypes{T}; use_nthreads::Int = Base.Threads.nthreads()) where {T, S}
+    return ElectricField{T, 3, S, typeof(grid.axes)}(get_electric_field_from_potential( epot, point_types; use_nthreads ), epot.grid)
 end
 
 
-function get_electric_field_from_potential(epot::ElectricPotential{T, 3, Cylindrical}, point_types::PointTypes{T}, fieldvector_coordinates=:xyz)::ElectricField{T, 3, Cylindrical} where {T <: SSDFloat}
+function get_electric_field_from_potential(epot::ElectricPotential{T, 3, Cylindrical}, point_types::PointTypes{T}; use_nthreads::Int = Base.Threads.threadid())::ElectricField{T, 3, Cylindrical} where {T <: SSDFloat}
     p = epot.data
     axr::Vector{T} = collect(epot.grid.axes[1])
     axφ::Vector{T} = collect(epot.grid.axes[2])
@@ -62,7 +62,7 @@ function get_electric_field_from_potential(epot::ElectricPotential{T, 3, Cylindr
 
     cyclic::T = epot.grid.axes[2].interval.right
     ef = Array{SVector{3, T}}(undef, size(p)...)
-    for iz in 1:size(ef, 3)
+    @onthreads 1:use_nthreads for iz in workpart(1:size(ef, 3), 1:use_nthreads, Base.Threads.threadid())
         for iφ in 1:size(ef, 2)
             for ir in 1:size(ef, 1)
                 ### r ###
@@ -157,9 +157,7 @@ function get_electric_field_from_potential(epot::ElectricPotential{T, 3, Cylindr
             end
         end
     end
-    if fieldvector_coordinates == :xyz
-        ef = convert_field_vectors_to_xyz(ef, axφ)
-    end
+    ef = convert_field_vectors_to_xyz(ef, axφ)
     return ElectricField(ef, point_types.grid)
 end
 
@@ -177,6 +175,7 @@ function convert_field_vectors_to_xyz(field::Array{SArray{Tuple{3},T,1,3},3}, φ
 end
 
 
+
 function interpolated_scalarfield(spot::ScalarPotential{T, 3, Cylindrical}) where {T}
     @inbounds knots = spot.grid.axes[1].ticks, cat(spot.grid.axes[2].ticks,T(2π),dims=1), spot.grid.axes[3].ticks
     ext_data = cat(spot.data, spot.data[:,1:1,:], dims=2)
@@ -212,17 +211,17 @@ end
 
 
 
-function get_electric_field_from_potential(epot::ElectricPotential{T, 3, Cartesian}, point_types::PointTypes{T})::ElectricField{T, 3, Cartesian} where {T <: SSDFloat}
+function get_electric_field_from_potential(epot::ElectricPotential{T, 3, Cartesian}, point_types::PointTypes{T}; use_nthreads::Int = Base.Threads.nthreads())::ElectricField{T, 3, Cartesian} where {T <: SSDFloat}
     axx::Vector{T} = collect(epot.grid.axes[1])
     axy::Vector{T} = collect(epot.grid.axes[2])
     axz::Vector{T} = collect(epot.grid.axes[3])
-    axx_ext::Vector{T} = get_extended_ticks(epot.grid.axes[1])
-    axy_ext::Vector{T} = get_extended_ticks(epot.grid.axes[2])
-    axz_ext::Vector{T} = get_extended_ticks(epot.grid.axes[3])
+    # axx_ext::Vector{T} = get_extended_ticks(epot.grid.axes[1])
+    # axy_ext::Vector{T} = get_extended_ticks(epot.grid.axes[2])
+    # axz_ext::Vector{T} = get_extended_ticks(epot.grid.axes[3])
 
     ef::Array{SVector{3, T}} = Array{SVector{3, T}}(undef, size(epot.data))
 
-    for ix in eachindex(axx)
+    @onthreads 1:use_nthreads for ix in workpart(eachindex(axx), 1:use_nthreads, Base.Threads.threadid())
         for iy in eachindex(axy)
             for iz in eachindex(axz)
                 if ix - 1 < 1
diff --git a/src/Simulation/Simulation.jl b/src/Simulation/Simulation.jl
index ff5d45e92..765891c38 100644
--- a/src/Simulation/Simulation.jl
+++ b/src/Simulation/Simulation.jl
@@ -1167,7 +1167,7 @@ Calculates the [`ElectricField`](@ref) from the [`ElectricPotential`](@ref) stor
 !!! note 
     This method only works if `sim.electric_potential` has already been calculated and is not `missing`.
 """
-function calculate_electric_field!(sim::Simulation{T, CS}; n_points_in_φ::Union{Missing, Int} = missing)::Nothing where {T <: SSDFloat, CS}
+function calculate_electric_field!(sim::Simulation{T, CS}; n_points_in_φ::Union{Missing, Int} = missing, use_nthreads::Int = Base.Threads.nthreads())::Nothing where {T <: SSDFloat, CS}
     @assert !ismissing(sim.electric_potential) "Electric potential has not been calculated yet. Please run `calculate_electric_potential!(sim)` first."
     periodicity::T = width(sim.world.intervals[2])
     e_pot, point_types = if CS == Cylindrical && periodicity == T(0) # 2D, only one point in φ
@@ -1181,7 +1181,7 @@ function calculate_electric_field!(sim::Simulation{T, CS}; n_points_in_φ::Union
             end
         end
         get_2π_potential(sim.electric_potential, n_points_in_φ = n_points_in_φ),
-        get_2π_potential(sim.point_types,  n_points_in_φ = n_points_in_φ);
+        get_2π_potential(sim.point_types,  n_points_in_φ = n_points_in_φ)
     elseif CS == Cylindrical
         get_2π_potential(sim.electric_potential),
         get_2π_potential(sim.point_types)
@@ -1189,7 +1189,7 @@ function calculate_electric_field!(sim::Simulation{T, CS}; n_points_in_φ::Union
         sim.electric_potential,
         sim.point_types
     end
-    sim.electric_field = get_electric_field_from_potential(e_pot, point_types);
+    sim.electric_field = get_electric_field_from_potential(e_pot, point_types; use_nthreads)
     nothing
 end