, consequently, the optimal subsidy, are largely unknown. Policy, therefore, is unlikely to have induced efficient solar investments … damages avoidable by solar capacity in each U.S. zip code, (2) relates these external benefits to subsidy levels in each U … vary considerably across the U.S., and to largely spillover to neighboring states. Subsidy levels are essentially …

subsidies can reduce deadweight loss, but only modestly. Fourth, the current federal purchase subsidy of $7500 has greater … deadweight loss than a no-subsidy policy …