Each term in this reference represents a modeling variable, rate structure concept, or incentive mechanism that directly informs how GetSunScore generates solar savings projections across Texas utility territories. This glossary is an institutional reference — it is not sales material, financial advice, or a product recommendation. All definitions reflect publicly available data and energy market standards as of the 2024 reference year.
Understanding these terms supports transparency in how GetSunScore constructs non-binding savings scenarios for residential solar assessment. Readers are encouraged to consult the /methodology page for a full explanation of modeling assumptions.
Alphabetical Index
How Glossary Terms Are Used in
SunScore™ Projection Engine Modeling
Irradiation Layer
Solar Irradiance and Peak Sun Hours determine how much solar energy a given location receives on an annualized basis. GetSunScore references NREL's National Solar Radiation Database (NSRDB) for georeferenced irradiation inputs. These values anchor the production estimate side of all modeled scenarios.
Utility Rate Layer
Utility Rate Structure and Avoided Cost define what electricity costs in a given territory. For Texas, this layer accounts for ERCOT market dynamics, TDU pass-through charges, and retail provider rate variability. Net Metering and Buyback Plan policies govern how excess generation is valued.
Incentive Layer
The Federal Investment Tax Credit (ITC) represents the primary federal incentive variable applied in modeling scenarios. GetSunScore references IRS guidance and publicly available legislative records. State-level incentives are sourced from DSIRE. All incentive references are non-guaranteed and subject to change.
20-Year Projection Modeling
Solar Degradation Rate, Grid Parity, and LCOE are multi-decade modeling variables. The SunScore™ Projection Engine applies a standard annual degradation factor and reference utility escalation rates to produce estimated payback windows and long-term savings scenarios.
All projections referenced on this page are modeled scenarios based on publicly available datasets including NREL, EIA, and Texas utility rate filings (reference year: 2024). Results are non-binding estimates and may vary based on individual system design, usage, local utility tariffs, and regulatory conditions. Glossary definitions are provided for informational purposes only. GetSunScore does not install solar systems, provide financial advice, or guarantee savings.