Addressing these barriers requires an integrated approach across environment, economic and social domains, and often close coordination among different levels of government. Clear, stable and credible long-term environmental, energy, transport and infrastructure policy signals are important drivers of investment and innovation (Kaminker, C., et al, 2013, Corfee-Morlot, J., et al, 2012, Criscuolo, C. and C. Menon, 2014, OECD, 2012, and OECD, 2013b). In addition, barriers to investment and innovation can often be addressed with revision to existing policy, regulation and tax settings (Kaminker, C., et al, 2013).