2026 Ashburn (20148) Line-Item Benchmark Schedule Labor Index: 1.08x
Use this schedule when reviewing quotes from contractors in Ashburn, VA. Quotes exceeding these ranges by more than 18% typically contain dealer financing markups or unitemized overhead.
| Dominion Energy / Appalachian Power Benchmark (20148) | Without Solar (Utility Tariff) | With 9.7 kW Solar + Battery | Net Homeowner Impact |
|---|---|---|---|
| 2026 Residential Electric Rate | $0.154 / kWh (+21.5% in 3 yrs) | $0.068 / kWh Levelized | Locks in hedge against utility rate hikes |
| System Investment & 30% Federal Tax Credit | $0 Upfront ($2,124/yr forever) | Gross: $29,857 / ITC: -$8,957 | Net Cost: $20,900 (9.8 yr payback) |
| 25-Year Cumulative Utility Spend vs. Savings | -$73,278 | +$52,378 Net Savings | Includes 4.8 hrs/day peak solar irradiance |
Interactive 20148 Property Customizer Real-Time Math
Local Code, Rebate & Insurance Mandate Notes for ZIP 20148
Insurance & Wind/Hail Rule (Loudoun County): Northern and Central Virginia convective wind storms create high approval rates for architectural upgrades.
2026 Incentives & Utility Rebates: Virginia SREC Solar Market ($55/MWh) + Dominion Energy Heat Pump Upgrade Credits
Permitting Authority: All structural roofing, electrical panel, and mechanical replacements in 20148 must be permitted through City of Ashburn Building & Permitting Division (Loudoun County) (Design Wind Speed: 115 MPH).
Frequently Asked Questions — Ashburn, VA (20148)
What is the current electric rate for Dominion Energy / Appalachian Power in 20148?
Residential customers in Ashburn, VA (20148) served by Dominion Energy / Appalachian Power pay an average of $0.154/kWh, following a 21.5% tariff increase over the past 3 years.
How fast is the solar payback period in Ashburn, VA (20148)?
With 4.8 peak sun hours per day and the 30% federal tax credit ($8,957 savings on an 9.7 kW system), the average payback period in 20148 is 9.8 years, generating $52,378 in cumulative 25-year savings.