renewable energy database

Does anyone know the disadvantages of the DSIRE (Database of State Incentives for renewable energy)?
incentives do not help at all? like some evidence to support an answer.
Incentives work: We own a cotton gin (inoperable now) and we were able to change the filter system w / the help of government incentives. Had there been no incentives would not have been able to do so quickly. What about Charles Bronson and his spaceship? The incentive was 1 million … that was part of the motivation to build their rocket. As DSIRE – I think the incentives are more efficient than flat-out government backing. Free-market companies, that planning before exercising any of the effort. With the incentive, they have to make sure you're quite right, or you will cost a lot of them if they fail. With government backing, can become a game of guess and check … the money keeps flowing.
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