HowDoesaSolarSystemWork?
And How to Maximize Efficiency
How a solar system produces electricity, what actually blocks its output - and the solutions we apply in every project.
How Is Solar Electricity Produced?
4 simple steps that turn sunlight into electricity in your home.
Sunlight Hits the Panels
Solar radiation, made up of photons, hits the panel surface. Each panel is built from photovoltaic cells made of silicon.
Photons Generate DC Current
Photons release electrons in the silicon, producing direct current (DC). More light means more electricity produced.
Inverter Converts to AC
DC flows to the inverter, which converts it to alternating current (AC) at 50Hz - the type that runs all appliances in your home.
Power Flows to Home & Grid
Generated power feeds your home consumption first. The surplus flows to the grid, and you receive a credit for it, via a bidirectional meter.
How to Choose a Home Solar System
6 critical decisions to make - in order of importance.
Check Your Electricity Bill
Pull your annual kWh consumption from the last 12 months of bills - the basis for every decision.
Assess the Roof
Free area, orientation (south is optimal), tilt, and shading sources. ~30 m² fits ~5 kWp; ~60 m² fits ~10 kWp; ~90 m² fits ~15 kWp.
Existing Connection Size
Shown on the bill (usually 3x25A or 3x40A). It caps the max system size. Upgrading the connection has a separate cost.
Pick System Size
Too small - not enough savings; too large - wasted unused capacity. Rule of thumb: aim to cover 90-110% of your annual consumption.
Component Quality
Tier-1 panels (LG, Q-Cells, JinkoSolar, LONGi) and a known inverter (Fronius, SolarEdge, Sungrow). Saving a few percent on cheap components costs much more over 25 years.
Financing & a Long-Term Partner
Cash, bank loan, or PPA. Pick a provider who supports the system for all 25 years - not just installs and disappears.
What Hurts Output - and How We Fix It
The 7 most common issues in solar systems, with a solution and how we implement it in practice.
Shading from Trees & Buildings
Even partial shading on a single panel can drop the entire string output by 20-40%.
Optimizers & Microinverters
Installing an optimizer per panel isolates the effect: a shaded panel doesn't drag down the rest.
- 1Digital shade analysis during design
- 2Sun-path mapping per season
- 3Per-panel optimizer or microinverter on problem panels
- 4Periodic tree trimming, coordinated with the client
Wrong Orientation or Tilt
In Israel, south-facing at 30-degree tilt is optimal. Significant deviation reduces output.
Adjustable Tilt Mounting
On a flat roof or sub-optimal orientation, tilt frames re-orient panels to the correct direction and angle.
- 1Optimal orientation calculated from property coordinates
- 2Choosing appropriate tilt frames
- 3Row spacing designed to prevent inter-panel shading
- 4Higher tilt to fit more panels on a small roof
Dust & Soiling
A layer of dust can cut output by 5-15%. In Israel, particularly after dust storms and muddy rains.
Periodic Cleaning + Anti-Soiling Coating
Professional cleaning 1-2 times a year restores original output. A hydrophobic coating extends the clean period.
- 1Cleaning included in the maintenance package
- 2Extra cleaning after heavy dust storms
- 3Output drop monitored - if it drops, cleaning is scheduled
- 4Optional coating at installation time
Panel Overheating
A hot panel is less efficient - about 0.4% output loss per degree above 25°C. In an Israeli summer, that adds up.
Ventilation Under the Panels
A 10-15 cm air gap between panel and roof allows airflow and natural cooling.
- 1Installed with planned ventilation gap
- 2Aluminum rails chosen to enable airflow
- 3No direct adhesion to the roof
- 4When needed, elevated frame for improved ventilation
Wrong or Cheap Inverter
A cheap inverter at 92% efficiency means 5%+ less output. Also more frequent failures.
Tier-1 Inverter at 97%+ Efficiency
Choose a known brand (Fronius, SolarEdge, Sungrow) with long warranty and high efficiency.
- 1Inverter selected for system size and profile
- 210-20% over-sizing designed (panels > inverter capacity)
- 3Manufacturer warranty 10-12 years minimum
- 4Compatible with the monitoring platform
Wiring Losses
Thin or overly long cables cause 2-5% output losses - accumulating to thousands of shekels over the years.
Engineered Wiring Layout
Right cable gauge, shorter routes, quality connectors, and reduced voltage drops.
- 1Voltage-drop calculated at the design stage
- 2Use of professional MC4 or external DC cables
- 3Inverter located as close as possible to panels
- 4Connection-tightness tests at every commissioning
No Monitoring or Maintenance
A 20% output drop fault can go untreated for months - thousands of shekels lost.
Smart 24/7 Monitoring with Alerts
A monitoring platform that detects anomalies and sends an automatic alert to both the homeowner and our team.
- 1Monitoring installed as part of the original order
- 2User app access to view live performance
- 3Automatic alert on any abnormal output drop
- 4Scheduled, documented periodic maintenance
Proper Implementation = Up to 30% More Output
The gap between a well-designed and well-maintained system versus a "standard" one accumulates to 25-30% more electricity over 25 years - thousands of kWh of profit.
Request Professional Design