Solar · unit rate
Solar panel cost per watt
DOE’s certified PV-only residential rates are $2.78 per watt (2024 USD) at the low (MSP) and $2.95 per watt (2024 USD) typical (MMP). There is no certified high dollars-per-watt figure.
Source year. Based on the same DOE / NREL Q1 2025 photovoltaic benchmark, reported in 2024 dollars.
Geographic scope. United States national modelled benchmark.
Model scope. Unit-rate page only. It does not restate an 8 kW project total except as a link to the installation page.
Important limitation. A dollars-per-watt rate is not an installer quote, and it is not a 2026 market price.
Certified benchmark values
| Band | Value |
|---|---|
| unit cost | $2.78 per watt (2024 USD) |
| unit cost | $2.95 per watt (2024 USD) |
No extra inputs
This page is a static certified benchmark. Adding location or complexity sliders would invent multipliers that are not certified.
What this estimate includes
- MSP and MMP dollars per watt (DC)
- PV-only residential definition from DOE
What moves the number
- Which DOE price concept you read (minimum-sustainable vs market)
- Module and balance-of-system mix inside the DOE benchmark
Methodology and sources
- Values are copied from DOE Table 2. They are not reconstructed from module stickers or labor hours.
- This page stays on the unit rate so it does not duplicate the installation-total page.
- HIGH remains unpublished.
Primary source: Q1-2025 Solar Photovoltaic System Cost Benchmarks.
How to use this result when planning
- Read this page when you need the unit rate, not a project total.
- MSP is the certified low dollars-per-watt rate. MMP is the certified typical rate. There is no certified high rate.
- To turn a rate into a project total, use the installation page and a size you supply. Do not multiply by an unpublished high rate.
When to get a contractor quotation
- Ask an installer for their all-in dollars per watt on the same PV-only residential scope before comparing to these 2024 rates.
- If their quote mixes storage, reroofing, or a service upgrade, that is a different scope than this unit-rate page.
Limitations
- Unit-cost page. Do not restated 8 kW project totals here.
- HIGH $/W is unpublished and is not invented.
- 2024$ historical benchmark.
Questions this evidence can answer
How is this different from the installation page?
This page answers dollars per watt. The installation page answers a whole-system total using the DOE 8 kW example.