diff --git a/simpegEM/TDEM/BaseTDEM.py b/simpegEM/TDEM/BaseTDEM.py
index 3ea68aa2..5aa92fac 100644
--- a/simpegEM/TDEM/BaseTDEM.py
+++ b/simpegEM/TDEM/BaseTDEM.py
@@ -1,5 +1,7 @@
 from SimPEG import Utils
 from SimPEG.Data import BaseData
+from SimPEG.Problem import BaseProblem
+import numpy as np
 
 
 class DataTDEM1D(BaseData):
@@ -16,3 +18,102 @@ class DataTDEM1D(BaseData):
     def __init__(self, **kwargs):
         BaseData.__init__(self, **kwargs)
         Utils.setKwargs(self, **kwargs)
+
+
+class MixinInitialFieldCalc(object):
+    """docstring for MixinInitialFieldCalc"""
+                        
+    def getInitialFields(self):
+        pass
+        # return fields obj
+        
+
+class ProblemTDEM1D(MixinInitialFieldCalc, BaseProblem):
+    """docstring for ProblemTDEM1D"""
+    def __init__(self, mesh, model, **kwargs):
+        BaseProblem.__init__(self, mesh, model, **kwargs)
+        
+
+    # Time stuff ########################################
+
+    def dt():
+        doc = "Size of time steps"
+        def fget(self):
+            return self._dt
+        def fdel(self):
+            del self._dt
+        return locals()
+    dt = property(**dt())
+
+    def nsteps():
+        doc = "Number of steps to take"
+        def fget(self):
+            return self._nsteps
+        def fdel(self):
+            del self._nsteps
+        return locals()
+    nsteps = property(**nsteps())
+
+    def tCalc():
+        doc = "Modelling times"
+        def fget(self):
+            t = np.r_[1:self.nsteps[0]+1]*self.dt[0]
+            for i in range(1,self.dt.size):
+                t = np.r_[t, np.r_[1:self.nsteps[i]+1]*self.dt[i]+t[-1]]
+            return t
+        return locals()
+    tCalc = property(**tCalc())
+
+    def getDt(self, tInd):
+        return np.concatenate([self.dt[i].repeat(self.nsteps[i]) for i in range(self.dt.size)])[tInd]
+
+    def setTimes(self, dt, nsteps):
+        dt = np.array(dt)
+        nsteps = np.array(nsteps)
+        assert dt.size==nsteps.size, "dt, nsteps must be same length"
+        self._dt = dt
+        self._nsteps = nsteps
+
+    # End Time stuff ########################################
+
+    def field(self, m):
+        F = self.getInitialFields()
+        Asolve = None
+        for i, dt in enumerate(self.times):
+            A = self.getA(i, F)
+            rhs = self.getRHS(i, F)
+            if Asolve is None or redoSolver:
+                Asolve = Solver(A,options=self.solveOpts)
+            sol = Asolve.Solve(rhs)
+            self.updateField(sol, F)
+
+        return F
+
+
+
+class FieldsTDEM(object):
+
+    phi0 = None #: Initial electric potential
+    A0 = None #: Initial magnetic vector potential
+    e0 = None #: Initial electric field
+    b0 = None #: Initial magnetic flux density
+    j0 = None #: Initial current density
+    h0 = None #: Initial magnetic field
+
+    phi = None #: Electric potential
+    A = None #: Magnetic vector potential
+    e = None #: Electric field
+    b = None #: Magnetic flux density
+    j = None #: Current density
+    h = None #: Magnetic field
+
+    """docstring for FieldsTDEM"""
+    def __init__(self, mesh, nTimes, store):
+        
+        self.nTimes = nTimes
+        self.nC = mesh.nC
+        self.nE = mesh.nE
+        self.nF = mesh.nF
+        self.nN = mesh.nN
+
+
diff --git a/simpegEM/TDEM/__init__.py b/simpegEM/TDEM/__init__.py
index af6842f5..805e777d 100644
--- a/simpegEM/TDEM/__init__.py
+++ b/simpegEM/TDEM/__init__.py
@@ -1 +1 @@
-from BaseTDEM import DataTDEM1D
\ No newline at end of file
+from BaseTDEM import DataTDEM1D, ProblemTDEM1D
\ No newline at end of file