So what is needed is massive public investment in cleaner energy provision, coupled in the short term with appropriate subsidies to offset high initial prices. If targeted at the most promising technology options (say, solar and wind), such a strategy would yield early unit cost write-downs through innovation, learning, and economies of scale; give the private sector clear, credible, and attractive signals; and encourage energy efficiency.
因此我们真正需要的是在洁净能源供应领域的大规模公共投资，以及在短期内提供抵消初始阶段高价格的恰当的补助。如果以发展最有前途的技术备选方案（例如太阳和风能）为目标，上述策略可以通过创新、学习和规模经济带来早期单位成本减记，向私有部门发出明确、可信和颇具吸引力的信号，并鼓励提高能效。