Comparison table
All seeded solar savings pages
Source of truth: current seed data
| City | State | Solar irradiance (kWh/m²/day) | Estimated 25-year savings | Payback period (years) | Primary utility + net-metering status | Federal / state / utility incentives summary |
|---|---|---|---|---|---|---|
| Atlanta | Georgia | 5.17 | $28,075 | 9.3 |
Georgia Power Bill savings depend on avoided retail use plus Georgia Power export-program terms |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Georgia residential solar property-tax exemption (Property-tax relief for qualifying residential solar value) | Georgia Power rooftop-solar interconnection / buyback pathway (Bill savings depend on avoided retail use plus Georgia Power export-program terms) |
| Austin | Texas | 5.07 | $16,705 | 10.4 |
Austin Energy ~$0.097/kWh for exported solar energy |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Texas Solar Property Tax Exemption (100% of added home value from solar) | Austin Energy Value of Solar Tariff (VOST) (~$0.097/kWh for exported solar energy) |
| Charlotte | North Carolina | 4.63 | $16,538 | 12.1 |
Duke Energy Carolinas Retail-rate bill credit for exported solar (~$0.1187/kWh) |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | NC Solar Property Tax Exemption (100% of added home value from solar); NC Sales Tax Exemption for Solar Equipment (Exempt from NC state and local sales tax (6.75–7.25%)) | Duke Energy Carolinas Net Metering (Retail-rate bill credit for exported solar (~$0.1187/kWh)) |
| Chicago | Illinois | 4.23 | $9,655 | 13.8 |
Commonwealth Edison (ComEd) Retail rate credit (~$0.135/kWh) for excess solar exported to the grid |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Illinois Shines — Adjustable Block Program (ABP) (Lump-sum SREC payment of $7,000–$10,000+ for a 6 kW residential system (block price dependent)); Illinois Property Tax Exemption for Solar (Added value from solar excluded from assessed property value for up to 10 years) | ComEd Net Metering (Retail rate credit (~$0.135/kWh) for excess solar exported to the grid) |
| Dallas | Texas | 5.38 | $16,605 | 10.5 |
Oncor Electric Delivery service area (ERCOT deregulated) Varies by provider — typically $0.03–$0.07/kWh for exported energy |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Texas Solar Property Tax Exemption (100% of added home value from solar) | REP Solar Buyback Programs (Varies by provider — typically $0.03–$0.07/kWh for exported energy) |
| Denver | Colorado | 5.57 | $19,695 | 9.6 |
Xcel Energy (Public Service Company of Colorado) Retail rate credit for exported solar energy |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Colorado Residential Solar Tax Credit (15% of installation cost, up to $2,500); Colorado Solar Property Tax Exemption (100% of added home value from solar) | Xcel Solar*Rewards Production Incentive (Per-kWh production incentive for first 10 years); Colorado Net Metering (Retail Rate) (Retail rate credit for exported solar energy) |
| Houston | Texas | 4.82 | $14,305 | 11.4 |
CenterPoint Energy service area (ERCOT deregulated) Varies by provider — typically $0.03–$0.07/kWh for exported energy |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Texas Solar Property Tax Exemption (100% of added home value from solar) | REP Solar Buyback Programs (Varies by provider — typically $0.03–$0.07/kWh for exported energy) |
| Jacksonville | Florida | 5.48 | $23,313 | 10.0 |
JEA (Jacksonville Electric Authority) Legacy net metering for grandfathered pre-2018 systems; current DG exports compensated near fuel rate (~$0.03050/kWh) |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Florida Residential Solar Sales Tax Exemption (100% exemption from Florida sales tax on eligible solar equipment); Florida Residential Renewable Energy Property Tax Exemption (100% of added home value from residential PV excluded from property tax) | JEA Distributed Generation / Legacy Net Metering Context (Legacy net metering for grandfathered pre-2018 systems; current DG exports compensated near fuel rate (~$0.03050/kWh)) |
| Los Angeles | California | 5.62 | $38,845 | 6.0 |
Los Angeles Department of Water and Power (LADWP) Retail rate credit (~$0.215/kWh) for exported solar energy |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | California Property Tax Exclusion for Solar (100% of added assessed value from solar installation); Self-Generation Incentive Program (SGIP) — Battery Storage ($150–$1,000 per kWh of battery capacity (income-qualified tiers higher)) | LADWP Net Energy Metering (NEM) (Retail rate credit (~$0.215/kWh) for exported solar energy) |
| Miami | Florida | 5.49 | $18,305 | 9.9 |
Florida Power & Light (FPL) Retail rate credit for excess solar exported to the grid |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Florida Sales Tax Exemption for Solar Equipment (6% Florida sales tax waived on solar equipment); Florida Property Tax Exemption for Residential Solar (100% of added home value from solar installation) | FPL Net Metering (Retail rate credit for excess solar exported to the grid) |
| Nashville | Tennessee | 4.50 | $19,300 | 13.5 |
Nashville Electric Service (NES) Grid-tied interconnection available; export credited at TVA avoided-cost rate (not full retail) |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Tennessee — No State Income Tax (context note) (N/A — no state income tax credit exists because TN has no personal income tax); Tennessee Sales Tax Exemption for Solar Equipment (Potential exemption from TN state and local sales tax) | NES/TVA Residential Solar Interconnection (Grid-tied interconnection available; export credited at TVA avoided-cost rate (not full retail)) |
| Phoenix | Arizona | 6.54 | $20,470 | 9.3 |
Arizona Public Service (APS) ~$0.076/kWh for exported solar energy |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Arizona Residential Solar Energy Tax Credit (25% of installation cost, up to $1,000); Arizona Solar Equipment Property Tax Exemption (100% of added home value from solar) | APS Net Billing (Resource Comparison Proxy) (~$0.076/kWh for exported solar energy) |
| Portland | Oregon | 4.04 | $8,860 | 14.6 |
Portland General Electric (PGE) Full retail rate credit for exported solar energy |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Oregon Solar Property Tax Exemption (100% of added home value from solar system) | Energy Trust of Oregon Solar Rebate (Up to $0.20/W — approximately $1,200 for a 6 kW system); Oregon Net Metering (Retail Rate) (Full retail rate credit for exported solar energy) |
| San Antonio | Texas | 5.30 | $17,291 | 10.1 |
CPS Energy Credit for exported solar energy at avoided cost rate |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Texas Solar Property Tax Exemption (100% of added home value from solar) | CPS Energy Solar Buyback (NEM) (Credit for exported solar energy at avoided cost rate) |
| Seattle | Washington | 3.57 | $6,400 | 21.0 |
Seattle City Light Full retail rate credit for exported solar energy |
Federal Solar Investment Tax Credit (ITC) (30% of system cost) | Washington State Sales Tax Exemption on Solar (Full retail sales tax exemption on solar equipment and installation (≈10.25% in Seattle)); Washington Solar Property Tax Exemption (100% of added home value from solar system) | Washington Net Metering (Full Retail Rate) (Full retail rate credit for exported solar energy) |