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4. Representing Nordic greenhouse policies: setting the policy shocks
This chapter introduces the Nordic-TERM model and presents the main modelling assumptions and scenarios involved in this research. These include a baseline run and a policy run and set out the effects of the greenhouse policies as deviations from the baseline.
4.1. The Nordic-TERM model
Our main analytical tool for this project is the Nordic-TERM model. It is called Nordic because it focuses on the Nordic countries and TERM because the model is in the tradition of The Enormous Regional Models initially developed at the Centre of Policy Studies at Victoria University in Melbourne, Australia (Horridge 2012; Adams, Dixon, and Horridge 2015). Information on TERM models in general and the technical details of Nordic-TERM in particular are given in Appendix 2. A brief overview is provided here.
Nordic-TERM, like all TERM models, is a multi-regional computable general equilibrium (CGE) model. Nordic-TERM, which was created for this project, identifies the five Nordic countries Denmark, Finland, Iceland, Norway, and Sweden, and the Rest of Europe (RoE). Each Nordic country is split into subnational regions at the NUTS-2 level: 5 regions in Denmark; 5 in Finland; 1 in Iceland; 7 in Norway; and 8 in Sweden. With the rest of Europe (RoE) treated as a single region, Nordic-TERM has 27 regions. The regions are treated as trading economies with strong flows of capital and labour within the regions of each country.
We chose the CGE approach for this study for four reasons:
First, CGE models are a practical framework for representing micro-economic policies. That is because CGE models incorporate descriptions of inputs to industries and sales to users. As explained in Section 4.3, for this project we applied ‘shocks’ to our model by making changes to the composition of inputs for the production of motor fuels and changes to the composition of expenditures by households, including a switch from motor fuels towards increased use of electricity (associated with the adoption of electric vehicles). The quantitative details of the shocks (the extent of the reduction in motor fuels, how much extra electricity etc.) are always subject to debate. Using the CGE framework, we can identify the role of each shock in contributing to key results and the effects on those results of varying the degree of the shocks within plausible ranges.
Second, CGE models specify explicit price-sensitive behaviour for multiple agents. Using a CGE model, we can trace how demand for various products by households, firms, exporters, and importers is affected by changes in prices. That is important for the present study, which involves policy-induced changes in commodity prices, particularly those of energy products.
Third, CGE models incorporate links between different economic agents. The most obvious are input-output links in which one agent (such as the motor vehicle industry) is a customer for the product of another agent (such as the fabricated metals industry). However, CGE models also include macro-economic links through labour, capital, and foreign-currency markets: expansion of one industry in a CGE model generates costs for other industries through wage, interest, and exchange rate effects. With these links in place, a CGE model picks up not only effects of greenhouse policies on energy industries, but also on industries and households that depend on such directly affected activities.
Fourth, a CGE model allows for computations at a high level of disaggregation. As mentioned already, Nordic-TERM encompasses 27 regions. Within each region there are 53 industries. At this level of disaggregation, we can identify activities most relevant to greenhouse gas emissions, including: 5 distinct types of electricity generation based on different fuels; 3 agricultural activities; 3 transport modes; 4 mining activities; oil refining; and 4 categories of metal production.
In addition to the disaggregated regional and industry results generated by the core part of Nordic-TERM, further results can be generated using downstream add-on programs. In this analysis, we have created add-on facilities to take core Nordic-TERM results and compute implications for the following: greenhouse gas emissions; employment by occupation and wage band; and living costs for households classified by income decile and location: urban (large cities); intermediate regions (towns and suburbs); and rural areas.
CGE models can be run using various choices for the length of a period. One possibility is to perform year-on-year simulations, where the length of each period is one year. However, in this analysis, we are concerned with long-term effects. We are therefore able to simplify the simulations by using just one period of 11 years, namely 2019 to 2030. When the Nordic-Term model was developed, the latest data in the CGE database were from 2020. We selected 2019 as the reference year instead of 2020 since the global economy was disrupted by the COVID-19 pandemic in the latter year and 2020 does not therefore reflect typical economic activity patterns in the Nordic Region. Each computation starts with a database for 2019. We then apply shocks for the exogenous variables representing their movements from 2019 to 2030. The model generates results for endogenous variables showing their resulting movements from 2019 to 2030. In other words, the model starts with a picture of 2019 and generates a picture of 2030.
We conducted two types of simulation using Nordic-TERM. The first is a baseline run showing the development of the Nordic economies from 2019 to 2030 in the absence of incremental greenhouse policies. The second is a policy run showing the development of the Nordic economies with decarbonisation policies for the transport sector in place and with phasing-out of coal in the power sector. Comparison of the policy and baseline results shows the effects of anticipated policies by the Nordic countries.
4.2. Developing the baseline scenario
The baseline run shows the evolution of the Nordic economies from 2019 to 2030 in the absence of greenhouse policies beyond those already implemented by 2019. It not only excludes policies that are yet to be agreed, but also policies that have been agreed, but are yet to be implemented. The baseline simulation covers macro variables, output projections for industries by nation, employment projections for industries and subnational regions, and emissions projections by nation. The baseline also includes projections for employment by occupation, wage band, education, and age.
Table 2 shows percentage growth in macro variables for the Nordic countries and the rest of Europe. The results are for growth over the 11 years from 2019 to 2030. They were derived in the baseline simulation.