| AC | alternating current |
| ASP | average selling price |
| BNEF | Bloomberg New Energy Finance |
| BOS | balance of system |
| CA NEM | California Net Energy Metering |
| CdTe | cadmium telluride |
| CF | capacity factor |
| CPI | Consumer Price Index |
| c-Si | crystalline silicon |
| DC | direct current |
| DOE | U.S. Department of Energy |
| EPC | engineering, procurement, and construction |
| FICA | Federal Insurance Contributions Act |
| GPRA | Government Performance and Reporting Act |
| HVAC | heating, ventilating, and air conditioning |
| ITC | investment tax credit |
| LBNL | Lawrence Berkeley National Laboratory |
| LCOE | levelized cost of energy |
| LCOS | levelized cost of storage |
| LCOSS | levelized cost of solar-plus-storage |
| Li-ion | lithium-ion |
| MACRS | Modified Accelerated Cost Recovery System |
| MLPE | module-level power electronics |
| MM | million |
| MWAC | megawatts alternating current |
| MWDC | megawatts direct current |
| NEC | National Electrical Code |
| NEM | net energy metering |
| NREL | National Renewable Energy Laboratory |
| O&M | operation and maintenance |
| PERC | passivated emitter and rear cells |
| PII | permitting, inspection, and interconnection |
| PPA | power-purchase agreement |
| PV | photovoltaic(s) |
| Q | quarter |
| SETO | Solar Energy Technologies Office (DOE) |
| SG&A | selling, general, and administrative |
| TPO | third-party ownership |
| USD | U.S. Dollars |
| VDC | volts direct current |
| WAC | watts alternating current |
| WDC | watts direct current |
| WP | watts peak |
