A recent study from the National Renewable Energy Laboratory (NREL) found that quotes from large solar installers  (companies that installed more than 1,000 systems in any year from 2013 to 2015) were $0.33/W higher (or 10%) than non-large installer quotes offered to the same customer. Although the study did not call out companies by name, it is likely that the data for the large solar installer category included SolarCity / Telsa, Sunrun and Vivint. Large installers offered a higher quote price than a corresponding non-large installer in about 70% of pairings. The NREL study is unique in that it uses price quote data versus installed pricing data in order to compare quotes offered to the exact same customer. The study concluded that customers could benefit from obtaining more quotes before deciding to install a system (also a top consideration in OhmHome’s guide on how to choose a solar company).

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 solar installers
solar installers prices

Source: NREL: Using Residential Solar PV Quote Data to Analyze the Relationship Between Installer Pricing and Firm Size

Solar installers – How Long Will the Pricing Premium Last?

The residential solar market landscape has changed in the last 18 months, as national firms have pulled back on acquisition spend and local installers gave gained share. Local installers have benefited from technology and financing platforms that has leveled the playing field with national installers. There has also been an increase in solar marketplaces, including EnergySage, Pickmysolar and Powerscout. These marketplaces and increased pricing transparency may continue to erode the pricing power of national installers.

Drivers of Cost of Solar Difference Between National and Local Solar Firms

The study offered several hypothesis on why the pricing difference exists. Large installers may bid higher prices due to imperfect competition in the customer quote collection process. Customers may also attribute benefits to large installers (perceived or real), including higher quality or trustworthiness or large installers may offer superior warranties or inverter replacement terms. Large installers may also have customer acquisition scale advantages, although Telsa and other large firms recently announced a reduction in acquisition spending. This reduction in spending is likely a key driver to the estimated 41% decline in solar in California in the first quarter of 2017, as OhmHome’s Solar Index indicated.

Below is a summary of pricing behavioral differences between large and small firms from the study.

  • Large Firms
    • More homogeneous price behavior
    • Preference for setting prices to ensure minimum return
    • Opportunity to earn premiums in nascent markets
    • More likely to use market share goals to determine pricing
  • Small Firms
    • More heterogeneous price behavior
    • More responsive to market conditions and policy changes
    • More likely to use cash flow goals to determine pricing
    • More likely to site fair pricing (i.e. fair price for the customer) as an important price driver

Current Cost of Solar in Major Markets

OhmHome’s research on solar pricing in California indicates that there is still a wide distribution in per watt pricing. The chart below shows the distribution of cost of solar per watt in California in Q4 of 2016 for larger systems.  Pricing is widely distributed in part due to quality of panels and equipment, but as the NREL study indicates, there is still an opportunity for tighter pricing distributions through increased consumer transparency. For more information, refer to OhmHome’s pricing guides for California (Los Angeles, San Diego, San Francisco) and New York (New York City, Long Island, Syracuse).

The full report from NREL can be found here.

 solar installers
solar installers