The deployment of decentralized productions units (DPU) like rooftop solar panels is a major challenge for a transition towards greener energy sources. Under a net metering system where the meter runs backward when there is excessive PV production, the electricity produced by a solar panel is valued at the retail price. Higher retail prices thus encourage the deployment of DPU. To identify this relationship, we use data from Wallonia where tariffs are paid on a mostly volumetric base and where there are 13 different tariff zones. Using various specifications, our results suggest that in a municipality where the distribution tariff is one eurocent per kWh higher, the investment in solar PV is, all else equal, around 8% higher.

中文翻译：

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光伏采用：净计量下的分销关税的作用

像屋顶太阳能电池板这样的分散生产单位（DPU）的部署是向绿色能源过渡的主要挑战。在净计量系统中，当有过多的PV产生时电表会向后运行，太阳能电池板产生的电将以零售价计价。因此，较高的零售价格鼓励DPU的部署。为了确定这种关系，我们使用了来自瓦隆的数据，其中关税主要是按体积计算的，并且有13个不同的关税区。使用各种规格，我们的结果表明，在分配电价每千瓦时高出1欧分的城市中，太阳能光伏发电的投资在其他所有条件下均提高了8％左右。