Nigeria is endowed with abundant sunshine year-round; thus, solar PV would solve the environmental problems associated with petrol-powered generators. However, it is unclear whether households are willing to transition. Thus, we analyze households’ willingness to pay (WTP) for solar PV under four scenarios: (i) WTP when a solar PV is complemented with a generator, (ii) WTP when a solar PV completely displaces a generator, (iii) WTP when a solar PV is complemented with a generator, plus a subsidy, and (iv) WTP when a solar PV completely displaces a generator, given a subsidy. We find that WTP for solar PV is higher when it can displace generators completely. Subsidy plus monthly rather than upfront payment would scale up the adoption of solar PV by about 6 per cent. Furthermore, the cost benefit analysis results show that solar PV investment is profitable. Thus, there is a need to implement policies aimed at scaling up the energy transition.

尼日利亚全年阳光充足，因此，太阳能光伏将解决与汽油发电机相关的环境问题。然而，目前尚不清楚家庭是否愿意过渡。因此，我们分析了四种情况下家庭对太阳能光伏的支付意愿（WTP）：（i）当太阳能光伏与发电机互补时的WTP，（ii）当太阳能光伏完全取代发电机时的WTP，（iii）WTP当太阳能光伏发电与发电机互补时，加上补贴，以及 (iv) 当太阳能光伏发电完全取代发电机时的支付意愿，并给予补贴。我们发现，当太阳能光伏完全取代发电机时，其支付意愿更高。补贴加上每月而不是预付款将使太阳能光伏发电的采用规模扩大约 6%。此外，成本效益分析结果表明，太阳能光伏投资是有利可图的。因此，有必要实施旨在扩大能源转型的政策。