NVX DIGITAL ENGINEERING

Solar Calculator

Don't know your kWh? Enter your average electricity bill. NVX converts every input to kWh/month before sizing the photovoltaic system.

1. Tell us what you know

Average monthly consumption Energy consumed each month, in kWh.

Currency Average monthly electricity bill Average electricity tariff Default BRL example: R$1.00/kWh. You can replace it with the actual tariff.

Annual energy consumption Total annual consumption in kWh.

Installation type City / State / Country V1 stores location for project reference. Irradiation automation comes in a future layer.

2. Customer / Site / Roof Mapping

Customer / Company name Installation address

Latitude

Longitude

CONFIRMED PROJECT LOCATION REQUIRED Enter real latitude and longitude. Example values are no longer treated as project data.

NVX ROOF MAP ENGINE V2 — CLICK THE ROOF Use address/GPS to locate the site. For V4.3 you can click directly on the roof-plan canvas to create/edit a polygon, or paste precise GPS corners from Google Earth/Maps.

Click roof corners clockwise. The canvas is a local planning surface; use pasted GPS points below for geodesic area accuracy.

Local canvas scale (meters across) Set the approximate real-world width represented by the planning canvas. V4.3 uses this to estimate clicked polygon area.

IMPORT KML / KMZ WORKFLOW Export the roof polygon from Google Earth as KML. In this V4.4, paste the KML text below or paste the extracted <coordinates> content.

KML / coordinates text

No KML imported.

Roof polygon coordinates

POLYGON POINTS0

POLYGON AREA—m²

MAIN ORIENTATION—approx. azimuth

CLICKED ROOF AREA—m² local estimate

V4.2 calculates geodesic roof area from GPS polygon points. Satellite imagery remains in Google Maps/Earth; embedded satellite mapping can be connected later with a map API.

Total roof / ground area Total mapped area in m². Usable-area factor (%) Preliminary V1 factor to account for setbacks, obstacles, access and unusable zones. Module footprint / spacing area Effective planning area per module, including preliminary spacing. Default V1: 2.8 m²/module.

3. Multi-Roof / Multi-Surface Mapping

NVX MULTI-SURFACE ENGINE V2 Add independent roofs, garages, carports, canopies, warehouses or ground-mount areas. Each surface keeps its own geometry, azimuth, tilt and KML/GPS polygon.

TOTAL SURFACES0

TOTAL GROSS AREA0.0m²

TOTAL USABLE AREA0.0m²

TOTAL MODULE CAPACITY0modules

WEIGHTED ORIENTATION FACTOR—

MULTI-ROOF STATUSNOT MAPPED

DUPLICATE POLYGONS0excluded from totals

4. Solar Path & Roof Orientation

NVX SOLAR PATH ENGINE V1 Uses latitude, date and local solar geometry to estimate sunrise/sunset direction, solar-noon elevation and a preliminary roof-orientation factor.

Roof azimuth (°) 0° North • 90° East • 180° South • 270° West.

Roof tilt (°) Preliminary roof inclination.

Solar path reference date

SUNRISE AZIMUTH—degrees

SUNSET AZIMUTH—degrees

SOLAR NOON ELEVATION—degrees

DAY LENGTH—hours

ORIENTATION FACTOR—preliminary

ROOF SOLAR STATUS—orientation quality

ORIENTATION SOURCE—manual or mapped surfaces

V4.5 solar geometry is a preliminary clear-sky orientation model. It does not yet include terrain horizon, nearby shading, weather files or bankable irradiation datasets.

5. Engineering assumptions

PV module power Watts per module. Default: 600 W. Solar productivity Estimated monthly generation in kWh per installed kWp. Default V1: 130 kWh/kWp/month. Approximate area per module Default V1: 2.6 m² per module.

6. BESS & Financial assumptions

Include preliminary BESS sizing BESS V1 uses a configurable share of average daily consumption. BESS coverage of average daily consumption (%) Installed Solar PV investment (currency / kWp) Editable commercial assumption. Default V1 is only a placeholder, not a market quotation. BESS investment (currency / kWh) Editable placeholder for preliminary scenario analysis. Annual tariff escalation (%)

7. Preliminary system result

Enter your data and click CALCULATE.

STANDARDIZED CONSUMPTION—kWh / month

RECOMMENDED PV SYSTEM—kWp installed

SUGGESTED INVERTER—kW AC

INVERTER RANGE ±20%—kW AC selection window

DC / AC RATIO—target ≈ 1.20

INVERTER STATUS—preliminary selection

PV MODULES REQUIRED—modules

USABLE ROOF AREA—m²

MAX MODULES ON ROOF—preliminary capacity

ROOF FIT STATUS—physical vs energy sizing

MULTI-ROOF SURFACES—independent roof faces

MULTI-ROOF CAPACITY—total modules across surfaces

APPROXIMATE PV AREA—m²

ESTIMATED MONTHLY GENERATION—kWh / month

ESTIMATED ANNUAL GENERATION—kWh / year

ORIENTATION-CORRECTED GENERATION—kWh / year preliminary

ESTIMATED MONTHLY ENERGY VALUE—based on tariff

ESTIMATED ANNUAL ENERGY VALUE—orientation-aware when location is valid

FINANCIAL ENERGY BASIS—generation used for savings/payback

8. BESS & Financial result

PRELIMINARY BESS—kWh usable target

ESTIMATED PROJECT INVESTMENT—editable assumptions

YEAR-1 ENERGY VALUE—gross preliminary value

SIMPLE PAYBACK—years

5-YEAR ENERGY VALUE—with tariff escalation

10-YEAR ENERGY VALUE—with tariff escalation

20-YEAR ENERGY VALUE—with tariff escalation

25-YEAR ENERGY VALUE—with tariff escalation

9. NVX Diagnostics

Location EngineCHECK

GPS Polygon EngineCHECK

Duplicate Polygon EngineCHECK

Solar Path EngineCHECK

PV / Inverter EngineREADY

BESS EngineREADY

Financial EngineCHECK

BuildV4.8.7.2 LOCATION + EARTH FIX

10. NVX Proposal Dashboard

Consumption × Solar Generation

Annual Energy Value Projection

Investment × Cumulative Energy Value

NVX PROJECT SUMMARY

PV SYSTEM—

MODULES—

INVERTER—

BESS—

INVESTMENT—

PAYBACK—

ROOF CAPACITY—

ACTIVE SURFACES—

CARPORT SURFACES—

KML/GPS SURFACES—

DUPLICATE SURFACES—

SITE STATUS—

ROOF POLYGON—

ORIENTATION—

MAPPING SOURCE—

ROOF SOLAR FACTOR—

SOLAR PATH—

FINANCIAL BASIS—

ORIENTATION SOURCE—

Preliminary proposal generated from calculator assumptions. Final engineering, equipment selection, commercial quotation and financing terms require validation.

NVX STANDARD
Every customer input is converted first to kWh/month. This is the common engineering basis for Solar PV, BESS, EV Charging, HVAC and Monitoring.

Preliminary engineering estimate only. Final sizing depends on irradiation, orientation, shading, utility rules, tariffs, taxes, equipment selection and engineering validation.