SCHEMA.md

Solstice Residential Energy Simulation Pack - Schema

This pack is a relational synthetic dataset for residential solar-plus-storage operations, VPP dispatch, outage resilience, and subscriber economics. It is designed for dashboarding, workflow testing, and predictive-model validation without customer-data exposure.

The schema is optimized around:

• household archetypes and contract structure
• solar and battery asset metadata
• utility tariff and savings logic
• dispatch participation and incentives
• outage resilience and backup performance
• billing, churn, and subscriber value
• fleet operations and portfolio KPIs

Top-level design

This is a multi-table pack with daily and monthly fact tables. The canonical release format should be Parquet, with CSV mirrors for easier import and demos.

Entity model

households

One row per synthetic customer home.

Field	Type	Notes
household_id	string	Stable household key
state	string	Two-letter state code
utility_territory	string	Synthetic utility-territory name
climate_zone	enum	coastal, desert, temperate, humid_subtropical, mountain, island
home_type	enum	single_family, townhome, small_multifamily
roof_profile	enum	ideal, good, constrained, shaded
income_band	enum	lower, middle, upper_middle, higher
ev_owner_flag	bool	EV adoption proxy
electrification_profile	enum	baseline, heat_pump, ev_ready, full_electrified
outage_risk_band	enum	low, moderate, high

subscriber_contracts

One row per active or historical contract.

Field	Type	Notes
contract_id	string	Stable contract key
household_id	string	FK -> households.household_id
subscription_type	enum	ppa, lease, subscription_flex, loan_like
term_years	int	Contract term length
contract_start_date	date	Start date
monthly_minimum_payment	float	Minimum monthly payment
flex_rate_per_kwh	float	Usage-based overage or flex price
escalator_pct	float	Annual escalator
battery_included_flag	bool	Battery attachment
vpp_eligible_flag	bool	Program eligibility
status	enum	active, renewed, churned
renewal_flag	bool	Renewal signal
churn_flag	bool	Churn signal

installation_pipeline

Sales-to-activation project timeline.

Field	Type	Notes
project_id	string	Stable project key
household_id	string	FK -> households.household_id
lead_source	enum	direct, partner, referral, digital, field_sales
signed_date	date	Customer signature date
permit_ready_date	date	Permit-complete date
install_date	date	Install date
pto_date	date	Permission-to-operate date
battery_attachment_flag	bool	Attached battery
project_cycle_days	int	Signed-to-PTO duration
cancellation_flag	bool	Cancellation signal
cancellation_reason	enum/null	Cancellation category

solar_systems

Installed solar metadata.

Field	Type	Notes
system_id	string	Stable system key
household_id	string	FK -> households.household_id
kw_dc	float	Nameplate DC size
module_count	int	Module count
inverter_type	enum	string, microinverter, hybrid
azimuth_band	enum	south, southwest, east_west, mixed
shading_band	enum	low, moderate, high
expected_annual_kwh	float	Modeled annual generation
commission_date	date	System commission date

battery_systems

Installed battery metadata.

Field	Type	Notes
battery_id	string	Stable battery key
household_id	string	FK -> households.household_id
usable_kwh	float	Usable energy capacity
power_kw	float	Power rating
chemistry	enum	lithium_iron_phosphate, lithium_nmc
reserve_setting_pct	float	Customer reserve floor
vpp_enabled_flag	bool	Dispatch participation enabled
install_date	date	Install date
replacement_due_year	int	Expected replacement year

utility_tariffs

Tariff metadata by territory and plan.

Field	Type	Notes
tariff_id	string	Stable tariff key
utility_territory	string	Territory name
state	string	State code
tariff_name	string	Synthetic tariff plan
tariff_type	enum	flat, tou, demand_like, export_sensitive
peak_start_hour	int	Peak start hour
peak_end_hour	int	Peak end hour
summer_peak_rate	float	Peak import rate
offpeak_rate	float	Off-peak import rate
fixed_monthly_charge	float	Fixed charge
net_billing_export_rate	float	Export compensation

daily_generation_consumption

Daily energy and savings fact table.

Field	Type	Notes
date	date	Day grain
household_id	string	FK -> households.household_id
solar_generation_kwh	float	Daily generation
home_load_kwh	float	Daily load
grid_import_kwh	float	Net import
grid_export_kwh	float	Net export
battery_charge_kwh	float	Battery charging
battery_discharge_kwh	float	Battery discharging
state_of_charge_end_pct	float	End-of-day battery state
bill_without_system_usd	float	Counterfactual utility bill
bill_with_system_usd	float	Utility bill with DERs
customer_savings_usd	float	Daily customer savings

dispatch_events

Program dispatch fact table.

Field	Type	Notes
dispatch_event_id	string	Stable dispatch key
date	date	Event date
household_id	string	FK -> households.household_id
program_id	string	Program name/id
dispatch_type	enum	peak_shave, capacity_event, emergency_event, market_dispatch
requested_kwh	float	Requested delivery
delivered_kwh	float	Actual delivery
duration_minutes	int	Event length
participated_flag	bool	Participation signal
non_participation_reason	enum/null	Reason when not participating
customer_incentive_usd	float	Event incentive value
grid_value_usd	float	Program value estimate

vpp_program_enrollment

Program enrollment metadata.

Field	Type	Notes
enrollment_id	string	Stable enrollment key
household_id	string	FK -> households.household_id
program_name	string	Program label
market_type	enum	utility, iso, aggregator, resilience
enrollment_date	date	Enrollment date
opt_out_flag	bool	Customer opt-out
participation_score	float	Participation likelihood proxy
seasonal_availability_band	enum	low, moderate, high

outage_events

Backup and resilience table.

Field	Type	Notes
outage_event_id	string	Stable outage key
date	date	Outage date
household_id	string	FK -> households.household_id
outage_duration_minutes	int	Duration
critical_load_served_kwh	float	Critical load supported
backup_duration_hours	float	Backup runtime
grid_down_flag	bool	Grid-down event
customer_outage_avoided_flag	bool	Whether backup protected load
unserved_load_kwh	float	Unserved energy

billing_and_savings

Monthly economics table.

Field	Type	Notes
billing_month	string	YYYY-MM month
household_id	string	FK -> households.household_id
contract_id	string	FK -> subscriber_contracts.contract_id
utility_bill_without_system_usd	float	Counterfactual monthly bill
utility_bill_with_system_usd	float	Monthly utility bill with system
subscription_payment_usd	float	Subscription payment
vpp_credits_usd	float	Dispatch or participation credits
net_customer_value_usd	float	Net monthly customer value
overage_kwh	float	Usage overage proxy

service_tickets

Fleet reliability and support.

Field	Type	Notes
ticket_id	string	Stable ticket key
household_id	string	FK -> households.household_id
open_date	date	Ticket open date
issue_category	enum	battery_alert, inverter_fault, connectivity, production_drop, customer_question
severity_band	enum	low, moderate, high
truck_roll_required_flag	bool	Truck roll requirement
resolution_days	int	Resolution duration
equipment_replaced_flag	bool	Replacement event

channel_attribution

Acquisition channel summary.

Field	Type	Notes
household_id	string	FK -> households.household_id
channel	enum	partner, digital, referral, direct, field_sales
campaign_type	enum	Acquisition campaign type
cac_usd	float	Customer acquisition cost proxy
conversion_days	int	Lead-to-sign duration
sales_motion	enum	inside_sales, field, partner_led, self_serve_assisted

portfolio_kpis_daily

Fleet-level KPI rollup.

Field	Type	Notes
date	date	Day grain
state	string	State rollup
active_households	int	Active subscribed homes
active_batteries	int	Active batteries
dispatch_events_count	int	Daily dispatch events
total_dispatched_kwh	float	Total delivered dispatch
participation_rate	float	Daily participation rate
avg_customer_savings_usd	float	Daily average savings
avg_bill_reduction_pct	float	Average bill reduction
outages_supported_count	int	Outages supported
service_ticket_rate	float	Daily service ticket rate
estimated_grid_value_usd	float	Portfolio-level dispatch value

Key relationships

• households.household_id joins to contracts, assets, timeseries, outage, service, and attribution tables
• subscriber_contracts.contract_id joins to billing_and_savings
• utility_tariffs.utility_territory joins to households.utility_territory
• households.state joins to portfolio_kpis_daily.state

Invariants

• bill_without_system_usd >= bill_with_system_usd for most rows, though some low-value days may be near zero savings
• grid_import_kwh >= 0 and grid_export_kwh >= 0
• delivered_kwh <= requested_kwh on dispatch rows
• customer_outage_avoided_flag == true implies critical_load_served_kwh > 0
• active_batteries <= active_households

Causal realism targets

The generator should preserve:

• higher cooling load and EV ownership -> higher evening battery value
• high-rate tariffs -> higher apparent savings opportunity
• battery-equipped homes -> higher outage resilience and dispatch eligibility
• high participation score -> stronger dispatch response
• more service burden -> lower net customer value and higher churn likelihood
• outage-prone markets -> stronger resilience event value

MVP release recommendation

For the first production-ready pack:

• 5,000 households
• 12 months
• daily grain
• all tables included

Premium expansion

For the larger commercial pack:

• 25,000 to 100,000+ households
• 24 to 36 months
• optional sub-daily load and dispatch tables
• richer degradation and replacement logic