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Green Building News

New Solar Fees Proposed in San Antonio

The municipal electric utility seeks new charges for photovoltaic systems but also wants to offer $21 million in PV incentives

In San Antonio, Texas, residential customers face fees for new photovoltaic systems. A proposal calls for a new one-time "interconnect charge" of $450 as well as a monthly fee of $1 per kilowatt of PV system capacity.
Image Credit: Jon Callas

Trustees of San Antonio’s municipally owned electric utility have approved a plan to award $21 million in new solar rebates, retain the current net-metering rules for rooftop photovoltaic (PV) systems, and develop a solar leasing program for utility customers who are unable to install their own PV systems.

At the same time, the CPS Energy Board of Trustees wants two new fees to pay for it: a one-time $450 interconnect charge for new residential systems, plus a monthly fee of $1 per kW of PV capacity. Existing customers would be grandfathered.

The plan needs the approval of the San Antonio City Council before it can take effect. A vote is likely in June.

CPS Executive Vice President Cris Eugster told trustees that solar is a “centerpiece” of the utility’s strategy for the future, according to a post at the CPS Energy website.

“But,” the account continued, “the utility must transition from an incentive-based model to one more market based if it is to be sustainable as more customers put solar on their rooftops.”

Echoing arguments made by utilities around the country, the CPS post said solar customers were using the grid as a type of storage battery, “but they don’t pay anything toward the cost of maintaining that grid or other necessary infrastructure.”

Utilitydive reported Solar San Antonio Executive Director Lanny Sinkin said the plan would “heavily suppress solar sales,” while Mayor Julian Castro said the proposed fees are “no way a done deal.”

Rebates worth an average of $10,000

Under current rebate rules, rooftop solar installations are eligible for rebates of $1.60 per AC watt, CPS project manager Tracy Hamilton said by telephone. The average residential rebate is about $10,000 and the average commercial rebate is about $60,000 she said.

In all, CPS says it has paid out $30 million since 2008.

CPS wants to add another 25 mega watts of distributed generation to the 15 MW already on line. Rebates would continue at the $1.60/watt level for the next 10 MW, then decline as solar prices continue to fall.

Euster told the board that a 5.6 kW solar system now has a “simple payback” of nine years, which would increase to 10 years with the new fees.


  1. Expert Member
    ARMANDO COBO | | #1

    Keeping my fingers, toes & eyes crossed...
    All energy producers should realize that creating programs to buy back electricity produced in rooftops, including the costs of managing and maintaining the grid, could be a win-win solution to a slowly expanding market, not to mention that it is in our national security interest. Unfortunately, it all gets lost in greed and politics. Would it be to much to wish that it gets included in the next codes, like California?
    In North Texas, only a couple of energy retailers offer some program to buy back PV energy, the great majority of retailers refuse to participate. I’m designing most of my houses solar-ready, and many of my clients are really embracing them, but is an uphill proposition. I’m glad that San Antonio and Austin are progressive about it, and I look forward to the day the rest of Texas and the country make it the norm.

  2. kyeser | | #2

    How does the grid react to fluctuations?
    General question. In areas on the country who have significant grid tied PV( if there is such an area) how does the grid react to high solar energy inputs during daylight hours, then a total drop off from solar production at night? How are the highs and lows managed?

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