HOW SOLAR WORKS
HOW BATTERIES WORKS
Backup-Focused Battery Configuration (“I want power when the grid goes down.”)
Resilience & reliability
Keeps energy reserved for outages
Powers critical loads (fridge, lights, Wi-Fi, medical devices)
Battery stays mostly full
Solar powers the home first
Excess solar charges the battery
Grid is used as needed
During an outage → inverter isolates the home and runs off battery + solar
Backup reserve: 30–100% (often 50–80%)
Battery discharge: Limited during normal operation
Grid charging: Sometimes enabled (for storm prep)
✅ Reliable power during outages
✅ Predictable performance
✅ Required in outage-prone areas
❌ Less daily savings
❌ Battery cycles less (under-utilized)
Areas with frequent outages
Medical or critical equipment
Customers who value reliability over bill savings
Bill reduction
Uses stored solar instead of buying grid power
Especially valuable with Time-of-Use (TOU) rates
Solar powers home during the day
Excess solar charges the battery
Battery actively discharges in evenings or peak hours
Grid use is minimized
Backup reserve: 0–30%
Battery discharge: Aggressive
Peak-shaving / TOU modes: Enabled
✅ Maximum utility bill savings
✅ High battery utilization
✅ Faster return on investment
❌ Less energy available during outages
❌ Battery may be empty if outage occurs at night
High electricity rates
TOU billing customers
Areas with reliable grids
SOLAR BENEFITS
100 REASONS TO GO SOLAR
Lower monthly electricity bills
Protection against rising utility rates
Reduced lifetime energy costs
Hedge against Time-of-Use (TOU) penalties
Improved ROI compared to many traditional investments
Federal Investment Tax Credit (ITC)
State, local, and utility incentives
Net metering or export compensation
Higher savings when paired with batteries
Solar financing often cheaper than utility inflation
Fixed energy cost for 25–30+ years
Increased disposable income
Potential cash flow positive systems
Lower exposure to fuel price volatility
Predictable long-term household budgeting
Increased property resale appeal
Lower operational costs than generators
Avoided demand charges (where applicable)
Ability to optimize savings via load shifting
Reduced reliance on utility monopolies
Increased home value (often 3–5%)
Faster home resale in many markets
No additional property tax in many states
Improved home energy rating
Modernizes the home’s infrastructure
Attractive to energy-conscious buyers
Future-proofs against electrification trends
Adds resilience without noise or fuel storage
Integrates cleanly into new or existing homes
Can be removed and reinstalled if needed
Low visual impact with modern designs
Appeals to remote workers needing reliability
Reduced dependence on the utility grid
Power during grid outages (with battery)
No fuel supply risk
Silent backup power
Instant response during outages
Storm and disaster resilience
Supports critical medical or work equipment
Maintains refrigeration and communication
Greater control over energy usage
Ability to prioritize critical loads
Energy autonomy during peak grid stress
Protection against rolling blackouts
Enhanced peace of mind
Grid isolation capability (islanding)
Avoids generator maintenance and emissions
Scales easily with additional batteries
Reduced strain on local grid infrastructure
Supports grid stability during peak demand
Distributed generation improves resilience
Offsets transmission and distribution losses
Provides local generation during heat waves
Reduces need for new power plants
Supports virtual power plant (VPP) programs
Eligible for utility demand response incentives
Helps prevent brownouts
Improves neighborhood energy resilience
Reduces utility peak load costs
Enables smarter energy management
Zero operational emissions
Reduces household carbon footprint
Decreases air pollution
Reduces water use compared to fossil fuels
Helps combat climate change
Supports clean energy transition
Improves local air quality
Reduces reliance on fossil fuels
Long lifecycle with minimal waste
Panels are increasingly recyclable
Offsets dirty peak power plants
Protects future generations
Aligns with sustainability goals
Reduces environmental justice impacts
Supports cleaner local communities
Greater awareness of energy usage
Encourages energy efficiency upgrades
Empowers homeowners with control
Reduces anxiety during outages
Improves work-from-home reliability
Supports EV ownership
Supports electrification (heat pumps, induction)
Compatible with smart home systems
Promotes energy-smart habits
Increases comfort during extreme weather
Reduces dependence on extension cords and generators
Improves family safety during outages
Aligns energy usage with personal values
Ready for EV charging growth
Scales with future battery additions
Compatible with V2H/V2G technology
Protects against utility policy changes
Adapts to changing rate structures
Software-upgradable systems
Long warranties (20–30 years)
Minimal maintenance
High reliability with few moving parts
Compatible with community energy programs
Integrates with smart grid technologies
Positions homeowners for the energy future
SOLAR FINANCING
SOLAR INCENTIVES
SRECS
RENEWABLE PORTFOLIO STANDARDS
U.S. State Renewables Portfolio & Clean Electricity Standards: Berkeley Lab’s (2023 Review)
SOLAR DICTIONARY
A practical glossary of common solar energy terms used across sales, engineering, EPC, permitting, and operations.
AC (Alternating Current) – Electricity used by homes and businesses; converted from DC by an inverter.
AHJ (Authority Having Jurisdiction) – Local agency that reviews permits and performs inspections.
Annual Production – Estimated energy a system generates in one year (kWh).
Balance of System (BOS) – All components except modules and inverters (wiring, conduit, racking, breakers).
Bidirectional Meter – Utility meter that measures power flowing to and from the grid.
Commissioning – Process of testing and verifying system performance after installation.
Conduit – Protective tubing used to route electrical wiring.
DC (Direct Current) – Electricity produced by solar panels.
Design Freeze – Point at which system design is finalized and no longer changes.
EPC (Engineering, Procurement, Construction) – Full-scope solar project delivery model.
Export – Electricity sent from a solar system to the utility grid.
Final Inspection – AHJ inspection confirming system compliance before PTO.
Grounding & Bonding – Safety measures that prevent electrical shock and fire hazards.
Ground Mount – Solar system installed on the ground rather than a roof.
Home Run – Main electrical wiring run from the array to the inverter or service panel.
Interconnection – Utility approval process allowing a solar system to connect to the grid.
Inverter – Device that converts DC power to AC power.
Junction Box (J-Box) – Enclosure for electrical wire connections.
kW (Kilowatt) – Unit of system power capacity.
kWh (Kilowatt-hour) – Unit of energy production or consumption.
Load Calculation – Structural or electrical analysis to confirm capacity limits.
Microinverter – Small inverter attached to each panel.
Module – Another term for a solar panel.
NEC (National Electrical Code) – U.S. standard governing electrical installations.
Net Metering – Billing mechanism crediting customers for exported solar energy.
Operations & Maintenance (O&M) – Ongoing monitoring and servicing of a solar system.
Permit Set – Approved construction drawings used for installation.
Photovoltaic (PV) – Technology that converts sunlight into electricity.
PTO (Permission to Operate) – Final utility approval to energize a solar system.
Quality Control (QC) – Inspection steps ensuring installation meets design and code.
Rapid Shutdown – Safety feature that de-energizes rooftop conductors.
Racking – Mounting system that secures panels to a roof or ground structure.
Service Panel – Main electrical distribution panel of a building.
Site Survey – On-site assessment performed before system design.
String Inverter – Inverter connected to multiple panels wired in series.
Tilt Angle – Angle at which panels are mounted relative to horizontal.
Utility Tie-In – Physical connection point to the electrical grid.
Voltage – Electrical pressure that drives current flow.
Watt (W) – Basic unit of power.
Zero Export – System configuration that prevents energy from feeding into the grid.