Similarly, for solar projects this risk is mitigated by data from existing installations, and, where there is little data, occasionally by insurance. Currently this performance data is closely held by project developers as a barrier to competition, increasing returns to incumbents but slowing adoption by other market participants. Deployment of low-carbon infrastructure would be greatly accelerated if there were standard methods to measure and report the characteristics of systems and their components. They are looking for investments which provide steady, low correlation, long-term, and preferably inflation adjusted income streams. They are therefore likely to invest in established and mature technologies. However, much clean energy technology remains at the pre-commercial stage.