Architecture

Single OSeMOSYS REGION (CAN); geography is encoded in fixed-width two-character zone codes. Every transmission link is an ordinary technology — the OSeMOSYS Trade mechanism is not used.

Why transmission is technologies

Technologies already provide losses, costs, maximum capacities, lifetimes and investment. Stock OSeMOSYS Trade is unbounded, cost-free and lossless, so rebuilding those features on it would be wasted effort.

Zones

13 zones across 9 provinces; the four largest provinces are split in two.

Code	Province	Zone
`B1`	British Columbia	South Coast / Lower Mainland
`B2`	British Columbia	Interior & North
`A1`	Alberta	Calgary–Edmonton corridor
`A2`	Alberta	North (oil sands)
`S1`	Saskatchewan	Saskatchewan
`M1`	Manitoba	Manitoba
`O1`	Ontario	Southern Ontario
`O2`	Ontario	Northern Ontario
`Q1`	Quebec	Southern Quebec
`Q2`	Quebec	Northern Quebec (hydro)
`T1`	Atlantic (NB+NS+PE)	Atlantic
`L1`	Newfoundland & Labrador	Newfoundland & Labrador
`N1`	North (YT+NT+NU)	North (territories)

Transmission

24 technologies — 8 intra-provincial and 16 interprovincial (both directions per link). Capacity, cost and losses come from the technology formulation, so expansion is endogenous.

Link	Capacity	Kind
`B1↔B2`	3.0 GW	intra-provincial
`A1↔A2`	2.5 GW	intra-provincial
`O1↔O2`	4.0 GW	intra-provincial
`Q1↔Q2`	6.0 GW	intra-provincial
`B1↔A1`	1.2 GW	inter-provincial
`A1↔S1`	0.15 GW	inter-provincial
`S1↔M1`	0.25 GW	inter-provincial
`M1↔O1`	0.3 GW	inter-provincial
`O1↔Q1`	2.7 GW	inter-provincial
`Q1↔T1`	1.1 GW	inter-provincial
`Q2↔L1`	5.4 GW	inter-provincial
`T1↔L1`	0.5 GW	inter-provincial

Provincial policy

Expressed with User Defined Constraints over groups of technologies: Σ(multiplier × activity) ⋛ UDCConstant. Full formulation in the model & code page; the Policies page inventories the federal & provincial policies this represents.

No provincial policies are active. Declare them in model_structure.ProvincialPolicies and they become UDC rows automatically.