Defining the optimisation constraints

# Specify input levers to fix
constraint_lever_names = ['CCS electricity',
'GGR1',
'GGR2',
'GGR3',
'GGR4']
constraint_lever_values = [1, 1, 1, 1, 1]

# Specify input levers to bound within a threshold
threshold_names  = [ 'Solar',
                    'Wind',
                    'Global population',
 'Electric & hydrogen',
 'CCS manufacturing',
'Nuclear',
'Calories consumed',
 'Quantitiy of meat',
  'Type of meat',
 'Livestock grains/residues fed',
'Land-use efficiency']
thresholds = [[2.6, 3.2], [2.5, 3.0], [1.6, 2.0], [2.8, 3.1], [1, 2], [1.5, 2], [2, 3], [2, 3], [2, 3], [1.8, 2.2], [1.8, 2.2]]

# Specify output constraints
output_constraint_names = ['Total energy demand (EJ / year)', 'Forest area (native and commercial, millions of hectares']
output_constraints = [420, 4100]