Community solar rates are still higher than
average retail electricity rates in some places, but as the market matures and solar PV prices continue to fall, that is likely to change.
According to a study by NERA Economic Consulting, under the CPP, 23 states could have experienced
retail electricity rate increases of 10 % to 20 %; seven states could have seen rates jump 20 % to 30 %; and 10 states could have experienced increases of a whopping 30 % or more.
Community solar is attractive to developers because it enables them to «incur commercial solar costs [thanks to the larger scale of these projects] while competing against
residential retail electricity rates.»
In fact, according to the Lawrence Berkeley National Lab, compliance costs for RPS laws were an average of 1 percent of
retail electricity rates across the 24 states they studied.
But the group isn't entirely certain about the details, and calls for more research on consumer behavior, to understand how consumers will likely respond to price signals baked
into retail electricity rates, especially when electric vehicles «result in significant fuel cost savings.»
According to those studies, national
average retail electricity rates may decline by as much as 7 percent, or increase by as much as 7 percent, relative to business - as - usual.
We assume a solar panel life span of 30 years, a decline in panel production of 0.5 % per year, inverter replacements at years 10 and 20, and
retail electricity rates increasing 2.18 % per year (National average utility bill increase of 2.18 % based on EIA data for the last reported 20 years, nationally (1997 - 2017).
The value of net metering credits or payments is often pegged to
the retail electricity rate.
Nevada's new bill (AB 405), if signed, will allow rooftop solar customers to be reimbursed for excess generation beginning at 95 percent of
the retail electricity rate.
Minnesota can strengthen its commitment to renewable energy with essentially no impact on average
retail electricity rates.
Subsequent studies will examine solar home premiums from markets beyond California, the change in premium through the housing market crash and recovery, sale price differences between customer - owned and third - party owned solar arrays, and the impact system age and
retail electricity rates have on solar home premiums.