def _kW(model, ID, item, line, shape):
key = 'kW'
mid = float(item[key])
if not mid: return None
units = item.units
size = item.S
mid = mid / size
distribution = shape(mid)
units = (bst._Q(1, 'kW') / bst._Q(1, units)).units
name = 'electricity rate'
if ID != line: ID = ID + ' ' + name
else: ID = name
@model.parameter(element=line,
units=units,
distribution=distribution,
name=ID)
def set_cost_option(value):
item[key] = value * size
def factor(base_units, new_units):
if base_units == new_units: return 1
else: return bst._Q(1, base_units).to(new_units).magnitude