To prevent energy providers from cheating the quota model, Sweden requires them to submit a certain number of green energy certificates.

为了防止能源供应商欺骗配额模型，瑞典要求他们提交确定数量的绿色能源证书。

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When the amount of green energy being generated is low, there are fewer certificates on the market and their price increases.

在绿色能源量生产数量较低时，市场上有证书的数量减少，价格上涨。

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Sweden developed a system based on government-mandated quotas for green energy and a market for certificates.

瑞典开发了一套基于授权绿色能源证书市场配额制度。

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The Green Palm Certificates offer an interesting solution (you can read all the details here).

FORBES: Can Commodities Be Sustainable?

Its subsidy regime, under which green power stations generate tradable certificates, is unwieldy compared with traditional cash handouts in other countries.

ECONOMIST: Renewable energy