What you need is also reference price because people don't know how much things cost.

你还需要参考价格，因为人们不知道这个东西的成本。

The reference price for electricity and for the settlement of many long-term agreements is set on the spot market, where the physical delivery of electricity is traded for the next day.

电力和许多长期协议结算的参考价格是在现货市场上确定的，在现货市场上，电力实物交割交易的都是次日的电力。