Between 2023 and 2025, 583 home solar systems were installed in National City by 87 different companies. Sunrun installed the most (191, or 33% of the local market), followed by Bright Planet Solar (119) and Semper Solaris (26). 54% of the systems were leased or financed through a power purchase agreement; the rest were bought outright. Every company in the ranking was still installing in 2025; installers that have since closed are left out.
Top 6 Solar Companies in National City by Home Installations
-
Serves National City, CA · no office address listed
- Most installations
- Mostly leases & PPAs
- Lowest median price in this list
- Typical system
- 4.3 kW
- Median price (owned)
- $4.95/W
- Leased / PPA
- 89%
- With battery
- 36%
Sunrun mostly sells leases and power purchase agreements: 89% of its systems here were leased or on a PPA, so the homeowner pays monthly and doesn't own the panels. Its most common setup here pairs JA Solar panels with SolarEdge inverters with power optimizers. 36% of its systems here include a home battery. Its median price for an owned system, $4.95/W, is close to the National City median. A typical system is 4.3 kW, about 11 panels, and it has installed in National City since 2000. It is also among the top installers in 107 other cities we rank, including Bakersfield and San Diego.
-
Serves National City, CA · no office address listed
- Mostly leases & PPAs
- Most battery installs
- Typical system
- 4.4 kW
- Median price (owned)
- $6.38/W
- Leased / PPA
- 84%
- With battery
- 59%
Bright Planet Solar mostly sells leases and power purchase agreements: 84% of its systems here were leased or on a PPA, so the homeowner pays monthly and doesn't own the panels. Its most common setup here pairs CSI Solar panels with SolarEdge inverters with power optimizers. 59% of its systems here include a home battery. Its median price for an owned system, $6.38/W, is 28% above the National City median of $4.98/W. A typical system is 4.4 kW, about 11 panels, and it has installed in National City since 2001. It is also among the top installers in 69 other cities we rank, including Stockton and Chula Vista.
-
- Mostly sells systems you own
- (619) 715-4054
- sempersolaris.com
- 1805 John Towers Avenue, El Cajon, CA 92020
- Typical system
- 4.5 kW
- Median price (owned)
- $5.09/W
- Leased / PPA
- 0%
- With battery
- 8%
Semper Solaris mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs Silfab Solar panels with Enphase microinverters. 8% of its systems here include a home battery. Its median price for an owned system, $5.09/W, is close to the National City median. A typical system is 4.5 kW, about 11 panels, and it has installed in National City since 2013. It is also among the top installers in 24 other cities we rank, including Oceanside and San Diego.
Phone from its California contractor license, CSLB #978152
-
Serves National City, CA · no office address listed
- Mostly leases & PPAs
- Typical system
- 4.5 kW
- Leased / PPA
- 65%
- With battery
- 53%
Freedom Solar Power mostly sells leases and power purchase agreements: 65% of its systems here were leased or on a PPA, so the homeowner pays monthly and doesn't own the panels. Its most common setup here pairs Qcells panels with SolarEdge inverters with power optimizers. 53% of its systems here include a home battery. A typical system is 4.5 kW, about 11 panels, and it has installed in National City since 2004. It is also among the top installers in 8 other cities we rank, including Vista and San Marcos.
-
- (888) 373-9379
- betterearth.solar
- 16720 Marquardt Avenue, Cerritos, CA 90703
- Typical system
- 5.7 kW
- Leased / PPA
- 50%
- With battery
- 13%
Better Earth sells both: 50% of its systems here were leased or on a PPA, the rest bought outright. Its most common setup here pairs Hanwha Q CELLS panels with SolarEdge inverters with power optimizers. 13% of its systems here include a home battery. A typical system is 5.7 kW, about 14 panels, and it has installed in National City since 2018. It is also among the top installers in 44 other cities we rank, including Fremont and San Bernardino.
Phone from its California contractor license, CSLB #1024460
- Map & reviews ↗
Sunlight Solar
- Mostly sells systems you own
- (858) 564-8032
- sunlightsolarinc.com
- 1300 N Johnson Ave #104, El Cajon, CA 92020
- Typical system
- 4.4 kW
- Leased / PPA
- 0%
- With battery
- 27%
Sunlight Solar mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs Hanwha Q CELLS panels with Enphase microinverters. 27% of its systems here include a home battery. A typical system is 4.4 kW, about 11 panels, and it has installed in National City since 2015.
Comparing quotes in National City?
Divide each quote's total, before incentives, by the system size in watts. Homeowners in National City who bought their system paid a median of $4.98/W in 2023–2025. Reject any 2026 quote that subtracts a 30% federal tax credit from a purchase: that credit ended in 2025.
How to check a solar quote →Home Solar in National City by the Numbers
Based on 584 residential systems installed in National City between 2023 and 2025, as reported to utilities and state agencies.
Most-installed panel brands
- Hanwha Q CELLS
- Silfab Solar
- LONGi Green Energy
Most-installed inverter brands
- SolarEdge
- Enphase Energy
- Tesla
How these brands compare nationwide: share, price and leasing →
Home installations per year
Median price of owned systems by year: 2020: $4.32/W · 2021: $4.25/W · 2022: $4.40/W · 2023: $4.82/W · 2024: $5.29/W.
Solar Panel Repair in National City
When a system stops producing, the best first call is an established local company. The companies ranked above installed systems in National City through 2025, so they know the equipment on local roofs. Many will service a system they didn't install, but not all — ask before you book, and expect a diagnostic fee.
50% of the home systems installed here in 2023–2025 use SolarEdge inverters, followed by Enphase Energy (30%). Enphase systems use a microinverter under each panel, so one failure usually knocks out a single panel and the monitoring app shows which one. Systems with a central (string) inverter — SolarEdge and others — stop producing entirely when that inverter fails; a dark screen or an error code on the unit on your wall is the usual sign.
Checks to do before you call anyone: solar troubleshooting guide. Storm damage, a roof leak or a burning smell: what to do first.
Installers That Closed or Went Bankrupt in National City
At least 23 home solar systems in National City were installed by companies that have since closed, liquidated or filed for bankruptcy. They are left out of the ranking above. If one of them installed your system, its workmanship warranty is likely gone — but panel and inverter warranties come from the manufacturer and usually survive the installer.
- Infinity Energy23 systems in National City
Ceased operations in 2023. Source: Forme Solar
See the full list of solar companies that went out of business and what still works if yours is one of them.
Solar in National City: Common Questions
Who installs the most solar panels in National City?
In the most recent three years of records (2023–2025), Sunrun installed 191 home systems in National City, more than any other company. Bright Planet Solar (119) and Semper Solaris (26) came next. Volume shows local experience, not workmanship, so compare quotes and reviews before choosing.
How much does a solar system cost in National City?
Homeowners who bought their system outright paid a median of $4.98/W before incentives, and the typical system was 4.8 kW — about $24,000 in total. Prices vary by installer: in the ranking above, the median ranges from $4.95/W to $6.38/W.
Do most people in National City buy or lease their panels?
47% bought their system and 54% leased it or signed a power purchase agreement (PPA). With a lease or PPA you pay little upfront, but you don't own the panels and the savings are smaller over the contract. Some installers sell almost only one way — check the "Leased / PPA" figure for each company in the ranking.
Who repairs solar panels in National City?
Start with the companies in the ranking above: Sunrun, Bright Planet Solar and Semper Solaris did the most work here, and an installer that knows the equipment on local roofs can usually diagnose a fault faster. If your system was leased or is on a PPA, call the company you pay each month first — maintenance is normally its job.
Can I still get the federal solar tax credit in 2026?
Not as a homeowner buying the system: the 30% residential credit (Section 25D) ended on December 31, 2025. Be wary of any quote that still subtracts it from the price. See our 2026 solar tax credit guide for what's left.
What if my solar installer went out of business?
Your panels and inverters are still covered by their manufacturers' warranties; what you lose is the installer's workmanship and roof-leak warranty. If the system is leased or on a PPA, the company you pay each month is usually responsible for repairs, and any active company in the ranking can take over service. See the installers that closed in National City and what still works when an installer closes.
What do homeowners in National City pay for electricity?
Residential customers in California pay an average of 34.74¢ per kWh, 99% above the national average. The higher the rate, the faster solar pays for itself. Source: EIA, Electric Power Monthly, Table 5.6.A.
No company pays to be listed or to rank higher, and any ad on this site is labeled. Before you sign, confirm the contractor license, insurance and recent reviews, and get at least three quotes. If a company in National City has closed, moved or changed its phone number, tell us and we'll check it.
How This Ranking Works
Companies are ranked by the home solar systems they installed here in 2023–2025, from utility and state records; each needs at least 10 local installations and must still have been installing in 2025. Closed or bankrupt companies are removed and listed separately. The count shows local experience, not workmanship or service.
Source: Tracking the Sun, Lawrence Berkeley National Laboratory (2026 edition), licensed CC BY 4.0. In New York and New Jersey, recent years come from the state programs' own records (NYSERDA and New Jersey's Clean Energy Program). Company names were standardized and closures checked against news reports by Solar Power Fix. More about our methodology.
Solar system not producing in National City?
The checks to do before you call anyone: the inverter screen, the breakers, the monitoring app and what each error code means.