Researchers in Sweden have investigated incentive applications for rooftop PV and proposed the variation of future schemes to completely different investor profiles.
Researchers from Chalmers College of Know-how and PV advisory agency Becquerel Sweden AB have investigated the impression of direct subsidies on the deployment of photo voltaic in Sweden. They’ve urged policymakers to adapt future applications to completely different investor traits.
The group analyzed all of the incentives for rooftop PV between 2009 to 2021, based mostly on an evaluation of 79,336 purposes for PV capital assist that the federal government awarded.
“For the research, the dependent variable was the willingness to spend money on photo voltaic,” defined the scientists. “The seven unbiased variables (IVs), one analysis variable, and 6 management variables included within the research have been the subsidy stage, the PV module value, the serial variety of the month, the electrical energy day-ahead spot value, the rate of interest, the state of the economic system, and vitality tax on self-consumed electrical energy.”
The group mentioned that the utmost capital subsidy in 2009 was set at as much as 55% for big corporations and 60% for all different teams, In 2021, it reached as much as 10% for corporations and as much as 20% for all different entities. At its peak in 2019, the annual funds for PV subsidies stood at about SEK 1.2 billion ($110 million).
The lecturers separated the info into 4 investor teams: households, corporations, associations, and public organizations. They analyzed them with quasi-Poisson regression, which is used when modeling an overdispersed depend variable, and 4 completely different robustness checks to evaluate whether or not the outcomes remained constant throughout completely different approaches.
“Our outcomes reveal that there have been necessary disparities among the many 4 completely different teams, which means that various factors of market dynamics might impression renewable electrical energy expertise (RET) investor teams in a different way,” the researchers mentioned. “Particularly, solely households had a considerably constructive relationship between the subsidy stage and the willingness to speculate. The same impact was noticed for personal corporations, though, the robustness of this relationship could also be questioned as a result of potential instability.”
Explaining the dearth of affect on public organizations and associations, the scientists proposed that they’re extra delicate to coverage threat. Amongst coverage dangers, they mentioned, are the restricted funds of the Swedish subsidy program, the lengthy ready time for subsidies, and the frequent adjustments within the stage of the subsidies.
“The outcomes emphasize the necessity for analysis to raised inform policymakers about investor teams’ potential preferences,” concluded the teachers. “We propose that so as to seize the nuances amongst completely different investor teams, this could not solely deal with excessive or oppositive teams, e.g., corporations versus households, or revenue-driven versus saving-driven actors, but in addition for different subgroups, akin to households, corporations, associations and public organizations.”
The scientists offered their findings within the research “The impression of photo voltaic PV subsidies on funding over time – the case of Sweden,” revealed in Power Economics.
Picture: Chalmers College of Know-how, Power Economics, CC BY 4.0 DEED
This content material is protected by copyright and is probably not reused. If you wish to cooperate with us and want to reuse a few of our content material, please contact: editors@pv-magazine.com.
