Document the Change
Capture the tariff, rule, effective date and regulatory source.
SUNDOCS PROTOTYPE
Solar Policy Intelligence
Explore sample utility-policy records and see how changes can be translated into standardized customer-dollar impacts.
BROWSE
Sample Policy Records
10
Prototype dataset
Utilities Represented
10
Initial test utilities
States Represented
9
Coverage is not national yet
Largest Sample Impact
-$23,000
20-year nominal estimate
STATE EXPLORER
Experimental Solar Policy Value Index
Select a state to focus the policy database. The current scores are conceptual while the SPVI methodology is being developed.
SPVI
Experimental Index
More Challenging
Watch
Neutral
More Supportive
POLICY DATABASE
Utility Policy Change Records
Sort, filter and select a record to inspect its sample assumptions and load it into the customer-impact model.
SAMPLE / UNVERIFIED DATA
⌕
Showing 10 records
Sorted by most recent
| Status | Policy Type | Change | Source |
|---|
Prototype notice:
records are being used to build the SUNDOCS
schema, interface and methodology. Source links
and calculations require verification before publication
as authoritative data.
SELECTED POLICY
APS — Solar Export Rate Reduction
Effective
PREVIOUS STRUCTURE
Higher export compensation
→
NEW STRUCTURE
Reduced export compensation
SAMPLE CUSTOMER IMPACT
-$380 / year
-$7,600 over 20 years
HISTORICAL VIEW CONCEPT
Solar Customer Value Over Time
Eventually this view can reconstruct the value of the same system under historical tariffs and policies.
Concept visualization only. These values are not
represented as verified historical calculations.
CUSTOMER IMPACT MODEL
Turn the policy into dollars.
Select a policy above or adjust the assumptions manually to see how changes in export compensation affect a representative solar customer.
CURRENT MODEL POLICY
APS — Solar Export Rate Reduction
Sample assumptions loaded from selected policy.
Current prototype formula:
exported solar energy × change in export compensation
This does not yet include batteries, TOU intervals,
fixed charges, demand charges, escalation,
system degradation or discounting.
ESTIMATED VALUE CHANGE
-$420 / year
-$8,400 over 20 years
Solar System Size
8 kW
Annual Solar Production
12,000
kWh
Self-Consumption
60
%
Previous Export Value
16
¢
New Export Value
7.25
¢
Analysis Period
20
years
Exported Energy
4,800 kWh
Export Value Change
-8.75¢ / kWh
THE CORE IDEA
Build an auditable history of rooftop solar economics.
SUNDOCS should connect each policy record to the regulatory source, effective date, tariff mechanics and estimated customer-dollar effect.
The long-term value is not simply knowing what a utility calls its solar program. It is being able to reconstruct what a new solar customer faced at a particular point in time.
Primary Source
Tariff sheet, utility filing, commission order or statute.
Effective Date
Identify when the policy actually applies to a new customer.
Before / After
Normalize the old and new economic rules.
Customer Impact
Calculate the difference using transparent assumptions.
Historical Trend
Track whether rooftop-solar economics improve or deteriorate.
PRODUCT DIRECTION
One policy database. Multiple ways to use it.
These are product directions, not features represented as complete today.
State Profiles
Utility-by-utility solar policy history organized by state.
Utility Profiles
Historical export rates, charges, grandfathering and tariff changes.
Customer Calculator
Apply policy changes to representative or custom solar systems.
Policy Monitoring
Track filings before they become effective customer policy.
Industry Data
Structured policy information for installers, advocates and finance providers.
