Solar Planner: Panel & Battery

Thinking about solar? Find out exactly what you need — and whether it pays off — before you talk to an installer. Solar Planner sizes a complete solar system for your home, cabin or business in under a minute. Pick your location, enter your electricity bill or list your appliances, and instantly see how many panels you need, what size inverter and battery to buy, how much energy you'll produce every month and how many years until it pays for itself. REAL SUNSHINE DATA • Uses satellite irradiance records (PVGIS, NASA POWER) for almost anywhere on Earth • Accounts for your roof tilt and direction, system losses and seasonal changes • Works offline after the first lookup COMPLETE SYSTEM SIZING • Number of panels, total kWp and roof area • Inverter size for grid-tied, hybrid or off-grid systems • Battery capacity in kWh and Ah at 12, 24 or 48 V • MPPT charge controller, string layout, cable size and fuse rating BEAUTIFUL, INTERACTIVE CHARTS • Monthly production vs. your usage • A typical day for every month — solar output against household load • Battery state of charge hour by hour • Where your energy goes: used, exported or bought from the grid • Year-round solar heatmap • Best tilt angle and facing direction • Sun path for summer, winter and equinox KNOW YOUR PAYBACK • Full cost breakdown: panels, inverter, battery, mounts and installation • Yearly and monthly savings • 25-year cash flow with payback point, ROI and NPV • Solar cost per kWh compared with your grid price • CO₂ avoided and tree equivalent PLAN AROUND YOUR APPLIANCES • Add fridges, air conditioners, lights, pumps and more • Set when each one runs — morning, daytime, evening or night • See your daily usage and peak load update live SAVE, COMPARE & SHARE • Save multiple projects and compare options side by side • Export a clean one-page PDF report to share with installers or family • Dark and light themes • Available in English, Russian, Uzbek, German and French Solar Planner gives you estimates for planning and comparing options. Actual output depends on shading, weather and installation quality — always get a site survey from a qualified installer before buying.