The continuing development of the offshore wind sector is an important element of UK energy and industrial policy since it holds the potential of substantial emissions reductions while simultaneously boosting economic activity. A central idea here is that the economic impact of the offshore wind sector can be enhanced by increasing the local content of its inputs. We explore, through simulation of a purpose-built Input-Output model of the UK, the economic and emissions impacts of the likely future development of the UK's offshore wind sector, with a particular emphasis on the importance of local content. We explore six scenarios all of which embed the capacity expansion anticipated by the Sector Deal, but differ in terms of local content-including a set of illustrative simulations considering the possible impact of Brexit on local content. We find that future offshore wind development does indeed generate a "double dividend" in the form of simultaneous and substantial reductions in emissions and improvements in economic activity. It is also the case that, as anticipated, the scale of the economic stimulus arising from offshore wind development is directly and strongly related to the extent of local content.

Summary This paper measures the effect of political integration, such as sharing a national state or economic union, on the degree of trade integration. Consistently with previous work, we find large border effects. However, such estimates may be biased and overestimate the effects of borders because of endogeneity: selection into sharing a political space is correlated with affinities for trade. We propose a method to address this and we produce estimates which are closer to the causal effect. We then conduct speculative exercises showing the costs and benefits of the changing levels of integration associated with: the independence of Scotland, Catalonia and the Basque Country from the United Kingdom and Spain [but remaining within the European Union (EU)]; the United Kingdom’s exit from the EU; the break-up of the EU itself and closer integration within the EU so that its internal borders appear similar to the internal borders of individual countries (as opposed to its current state of being simply a closely integrated group of countries). We find that the border effect between countries is an order of magnitude larger than the border effect associated with the EU.

Encouraging consumers to shift their diets towards to a lower meat/lower calorie alternative has been the focus of food and health policies across the world. The economic impact on regions has been less widely examined, but is likely to be significant, where agricultural and food activities are important for the host region. In this study we use a multi-sectoral modelling framework to examine the environmental and economic impacts of a dietary change, and illustrate this using a detailed model for Scotland. We find that if household food and drink consumption follows healthy eating guidelines, it would reduce both Scotland's "footprint" and "territorial" emissions, and yet may be associated with positive economic impacts, generating a "double dividend" for both the environment and the economy. Furthermore, the likely benefits to health suggest the potential for a "triple dividend". The economic impact however depends critically upon how households use the income previously spent on higher calorie diets.

Credible implementation of climate change policy, consistent with the 2C limit, requires a large proportion of current fossil fuel reserves to remain unused. This issue, named the Carbon Bubble, is usually presented as a required asset write-off, with implications for investors. For the first time, we discuss its implications for macroeconomic policy. We embed the Carbon Bubble in a macroeconomic model exhibiting a financial accelerator: if investors are leveraged, the Carbon Bubble may precipitate a fire-sale of assets across the economy, and generate a large and persistent fall in output and investment. We find a role for policy in mitigating the Carbon Bubble.

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