Policy Alternatives and Complements
Schemes such as quota-based mechanisms (Renewable Portfolio Standards) and subsidies create limited protected markets for renewable energy. The supply of renewable energy is achieved by obliging suppliers to deliver to consumers a portion of their electricity from renewable energy sources. To do this, they collect green electricity certificates. Hence, a market is created in green electricity certificates which, according to the theory, generates downward pressure on the prices paid to renewable energy developers. This is based on the theory of perfect competition where there is a multiplicity of buyers and sellers in a market where no single buyer or seller has a big enough market share to have a significant influence on prices. Although, in practice, markets are very rarely perfectly competitive, the assumption is still that a relatively competitive market will produce a more efficient use of resources compared to a system where prices are set by analysts.
The fundamental problem with the quota scheme is that there is no long-term certainty. When a quota is set either for a period of time or for a quantity of power, once that goal is reached then there is nothing to keep the green power producers from becoming uneconomic in the face of power produced from coal-fired power stations and hence collapsing as businesses. This inevitability with the quota method means that there is reluctance on behalf of investors to get involved in the first place. Those that do get involved are short-term speculators rather than long-term entrepreneurs and so instability is inherent in this system.
Quota systems favor large, vertically integrated generators and multinational electric utilities, and are more difficult to design and implement than a price system.
Read more about this topic: Feed-in Tariff
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