SDG&E Drives High Solar Adoption as One in Four Customers Go Solar

Rhea-AI Summary

San Diego Gas & Electric (SRE) reports that more than 350,000 residential customers now generate power through rooftop solar, representing over one in four customers and among the highest adoption rates nationally.

SDG&E highlights faster interconnections averaging about three days and 20 years of top-tier grid reliability.

AI-generated analysis. How Rhea-AI works. Not financial advice.

News Market Reaction – SRE

+0.78%

+0.78% News Effect

On the day this news was published, SRE gained 0.78%, reflecting a mild positive market reaction.

Data tracked by StockTitan Argus on the day of publication.

What This Means

SDG&E’s report that over 350,000 customers, roughly one in four, use rooftop solar with interconnect...

Analysis

SDG&E’s report that over 350,000 customers, roughly one in four, use rooftop solar with interconnections averaging three days highlights grid modernization progress; investors may watch how storage adoption and evolving regulation affect returns and capital needs.

Key Figures

Residential solar customers: more than 350,000 Solar adoption rate: one in four customers Interconnection time: about three days +1 more

4 metrics

Residential solar customers more than 350,000 customers generating their own power through rooftop solar

Solar adoption rate one in four customers share of SDG&E customers with rooftop solar

Interconnection time about three days average time to complete rooftop solar interconnection

Reliability streak 20 consecutive years most reliable electric utility in the West by PA Consulting

Historical Context

5 past events · Latest: Jun 30 (Positive)

Pattern 5 events

Date	Event	Sentiment	24h Move	Catalyst
Jun 30	customer cost update	Positive	-1.3%	SoCalGas reported five-year low natural gas commodity costs for customers.
Jun 24	recognition award	Positive	+0.8%	Sempra named to WSJ Best Companies for the Future list and other rankings.
Jun 22	community initiative	Positive	+1.0%	SoCalGas employees logged over 1,100 volunteer hours supporting community nonprofits.
Jun 11	efficiency savings	Positive	+0.6%	SoCalGas reported 2025 energy efficiency programs saving customers over $106 million.
Jun 10	growth outlook	Positive	+0.2%	Sempra outlined Texas growth tied to ERCOT-endorsed transmission investments via Oncor.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Pattern Detected

Recent company-focused news has usually coincided with modest gains, with one notable instance of a negative reaction to positive-sounding operational news.

Key Terms

rooftop solar, interconnection process, two-way power flows, battery storage

4 terms

rooftop solar technical

"more than 350,000 residential customers now generating their own power through rooftop solar"

Rooftop solar is the installation of solar panels on the roof of a home, factory or office so the building can generate its own electricity, much like placing a small power plant on top of the property. For investors, rooftop solar can lower a business’s energy bills, change future capital and operating costs, and create new revenue or tax benefits—factors that affect profitability, asset value and risk when assessing a company.

interconnection process technical

"the company has streamlined its interconnection process and consistently exceeded state performance benchmarks"

The interconnection process is the sequence of technical studies, permits, agreements and inspections needed to physically and legally attach a new facility or equipment to an existing network—most commonly an electrical grid or communications network. For investors it matters because this process determines how soon a project can start delivering revenue, what additional costs or upgrades might be required, and the risk of delays; think of it like arranging utility hookups and inspections before a new house can be lived in.

two-way power flows technical

"today's grid increasingly supports two-way power flows as customers both consume and contribute energy"

Electricity moving in both directions on a power grid or distribution network, rather than only from large generators to consumers; this happens when homes or businesses both draw power and send excess electricity back to the grid from sources like rooftop solar, batteries, or electric vehicles. It matters to investors because two-way flows change how utilities, grid equipment, energy storage, and renewable projects are valued and operated—similar to a road that supports cars going both ways instead of only one direction, requiring different rules and infrastructure.

battery storage technical

"more customers are pairing solar with battery storage, allowing them to save excess energy"

Battery storage is a system that stores electricity in large rechargeable batteries so power can be used later, like a reusable fuel tank for the grid. Investors care because it smooths out when energy is available vs. when it’s needed, can lower costs, create new revenue from selling stored power at peak times, and reduce reliance on unpredictable energy sources, affecting utility and clean-energy company valuations.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Strong customer participation and faster interconnections are helping enable the grid of the future 

SAN DIEGO, July 7, 2026 /PRNewswire/ -- San Diego Gas & Electric (SDG&E) is helping enable the grid of the future, with more than 350,000 residential customers now generating their own power through rooftop solar – equivalent to more than one in four customers and one of the highest adoption rates in the nation.

In a region defined by abundant sunshine, customers are increasingly choosing to generate their own clean energy, helping shape a more flexible and locally driven energy system. Their participation is helping transform how energy is produced, shared and delivered across the region.

"The energy system is changing because our customers are leading that change," said Scott Crider, president of SDG&E. "Our responsibility is to help the grid evolve with them. That means building a system that can safely integrate customer-generated energy while continuing to deliver the reliability our customers expect. The progress we are making on solar adoption and interconnections is an important part of enabling that future."

Beyond adoption: Operating a more dynamic energy system
The growth of rooftop solar throughout San Diego and South Orange Counties represents more than increased clean-energy generation; it reflects how customers are changing the way energy is produced, shared and delivered across the region.

Unlike a traditional electric system that primarily delivers electricity in one direction, today's grid increasingly supports two-way power flows as customers both consume and contribute energy.  

Faster, more efficient solar interconnections
To support continued growth, SDG&E has focused on improving how customers connect to the grid. Through targeted process improvements and coordination across teams, the company has streamlined its interconnection process and consistently exceeded state performance benchmarks, helping reduce wait times and uncertainty for customers pursuing solar projects. On average, customers are now able to complete the interconnection process in about three days. These improvements are helping customers connect their systems more quickly and enabling customer-generated energy to be more easily integrated into the grid.

A more connected energy system
As rooftop-solar adoption grows, customers are not only generating clean energy, they remain connected to and supported by the broader grid. Even with solar, customers continue to rely on the grid to meet energy needs at times when generation is lower, reinforcing the importance of a strong, reliable system – one our customers depend on and that SDG&E has consistently delivered, with 20 consecutive years of being named the most reliable electric utility in the West by PA Consulting. At the same time, more customers are pairing solar with battery storage, allowing them to save excess energy generated during the day and use it later when needed. As adoption grows, these technologies can help support reliability and increase flexibility across the energy system.

The strong adoption of rooftop solar and battery storage across the region reflects a broader shift in how energy is generated and used—one that depends on a modern electric grid to connect customers, balance energy resources and provide reliable service across the region.

Supporting customers 
Customers interested in installing rooftop solar can learn more and find information about program options, interconnection requirements and available resources at sdge.com/solar.

About SDG&E
San Diego Gas & Electric (SDG&E) is an innovative energy delivery company that provides clean, safe and reliable energy to better the lives of the people it serves across 27 cities and two counties in the San Diego and southern Orange County region. SDG&E is a recognized leader in its industry and community, as demonstrated by being named Corporate Partner of the Year at the San Diego Business Journal's Nonprofit & Corporate Citizenship Awards and receiving PA Consulting's ReliabilityOne® Award for Outstanding Reliability Performance for 20 consecutive years. SDG&E is a subsidiary of Sempra (NYSE: SRE), a leading U.S. utility holding company. For more information, visit SDGEtoday.com or connect with SDG&E on social media @SDGE.

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SOURCE San Diego Gas & Electric (SDG&E)

FAQ

How many SDG&E (SRE) customers have adopted rooftop solar as of July 2026?

More than 350,000 SDG&E residential customers now generate their own power through rooftop solar. According to SDG&E, this equals over one in four customers and represents one of the highest rooftop solar adoption rates in the United States.

How fast is the solar interconnection process for SDG&E (SRE) customers in 2026?

SDG&E customers can typically complete the rooftop solar interconnection process in about three days. According to SDG&E, targeted process improvements and better coordination help reduce wait times and uncertainty for customers pursuing new solar projects across the service area.

What does strong rooftop solar adoption mean for the SDG&E (SRE) electric grid?

Strong rooftop solar adoption is supporting a more dynamic, two-way SDG&E grid. According to SDG&E, customer-generated energy changes how electricity is produced, shared and delivered, requiring a grid that can integrate local resources while maintaining reliability across the region.

How does SDG&E (SRE) support reliability for customers with rooftop solar?

SDG&E continues to provide grid reliability even as customers adopt rooftop solar. According to SDG&E, solar customers remain connected to the broader system, which supplies power when solar generation is lower, supporting a reliable network recognized 20 consecutive years by PA Consulting.

Are SDG&E (SRE) customers pairing rooftop solar with battery storage?

Many SDG&E customers are increasingly pairing rooftop solar with battery storage to use excess energy later. According to SDG&E, these combined technologies can help support grid reliability and increase flexibility as adoption grows across San Diego and South Orange Counties.

Where can SDG&E (SRE) customers find information on installing rooftop solar?

SDG&E customers can access rooftop solar information and program details on the company website. According to SDG&E, sdge.com/solar offers guidance on interconnection requirements, program options and available resources for those considering new or expanded home solar systems.