Solar Panel Cost in Tacoma, WA
Estimated costs and savings for ZIP code 98402 — updated for 2026
Urgent tax credit deadlines
- Section 48E phase-out completes December 31, 2027 — projects must be placed in service by then (469 days left).
Gross Cost
$20,160
7kW system
Annual Savings
$1,234
$103/month
Payback Period
16.3 yrs
Break-even
Peak Sun Hours
3.8
hrs/day avg
Solar System Cost Breakdown — Tacoma, WA
Estimated costs and savings for different residential solar system sizes in ZIP 98402. Costs based on WA average of $2.88/W and utility rate of $0.15/kWh.
| System | Cost | Savings/yr | Payback |
|---|---|---|---|
| 4 kW | $11,520 | $705 | 16.3 yrs |
| 5 kW | $14,400 | $881 | 16.3 yrs |
| 6 kW | $17,280 | $1,058 | 16.3 yrs |
| 7 kW(typical) | $20,160 | $1,234 | 16.3 yrs |
| 8 kW | $23,040 | $1,410 | 16.3 yrs |
| 10 kW | $28,800 | $1,763 | 16.3 yrs |
Solar Production in Tacoma, Washington
Average Peak Sun Hours
3.8 hours/day
Lower solar resource — longer payback but still viable
Est. Annual Production (7kW)
8,253 kWh
Based on 3.8 PSH × 7kW × 365 days × 85% efficiency
Average Utility Rate
$0.15/kWh
Above-average rates — good solar savings potential
Cost Per Watt in WA
$2.88/W
Below national average — competitive market
Solar Panel FAQ — Tacoma, WA
How much do solar panels cost in Tacoma, WA?
A typical 7kW solar system in Tacoma, WA (ZIP 98402) costs approximately $20,160 before any incentives. This works out to about $2.88 per watt installed. Smaller systems start around $11,520, while larger 10kW systems can cost up to $28,800.
How long is the solar payback period in Tacoma?
The average solar payback period in Tacoma, WA is approximately 16.3 years for a 7kW system. With estimated annual savings of $1,234, the system pays for itself and then generates free electricity for the remaining 15-20+ years of its lifespan.
How much can I save with solar panels in 98402?
Homeowners in Tacoma, WA (ZIP 98402) can save approximately $103 per month or $1,234 per year with a standard 7kW solar system. Over 25 years, total savings can exceed $30,850, depending on utility rate increases.
How many peak sun hours does Tacoma get?
Tacoma, WA receives an average of 3.8 peak sun hours per day. This is below the national average, making solar still viable but with longer payback in this area.
What size solar system do I need for my home in Tacoma?
The average home in Tacoma, WA needs a 7kW solar system to offset their electricity usage. The exact size depends on your monthly electric bill, roof orientation, and available space. A 7kW system would produce approximately 8,253 kWh annually in ZIP 98402.
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