It also has higher education requirements than renewable electricity generators, which may relate positively to spillovers in terms of social cohesion and regional development. From available evidence, educational requirements (as well as salaries) appear to be higher in the NPP construction and operating sectors (although not as high as in the decommissioning and waste management sectors) than in onshore wind, and in both PV and concentrated solar power (CSP). Trends in R&D funding have changed remarkably.