Democratization of Solar
The Future of Solar Energy Distribution
Purpose-built SPDU technology that brings solar power to every office, shop, and apartment in a building. Real-time monitoring, automated distribution, and IoT-connected management.
The Solar Distribution Problem
Millions of commercial and residential buildings have rooftop solar panels, but the benefits rarely reach individual tenants and occupants.
One Roof, Multiple Owners
A single rooftop is shared by dozens of tenants and owners, making individual solar installations impractical. This is why most buildings limit solar benefits to common areas — individual units are left out entirely.
Complex Metering & Billing
Setting up numerous individual systems for each tenant brings massive technical complexity — DISCOM billing challenges, ever-changing regulations, and fluctuating electricity rates that make the economics nearly impossible to manage.
Time-of-Day Restrictions
DISCOMs dictate how and when you can use your solar energy. Time-of-Day tariffs already affect commercial buildings and are soon rolling out to residential — leaving owners with little control over their own energy costs.
We solved this.
Meet the SPDU
The Smart Power Distribution Unit - a purpose-built device that transforms how buildings consume solar energy.
Per-Unit Solar Distribution
Distribute rooftop solar power directly to individual offices, shops, and apartments with precise generation-based metering.
IoT-Connected Management
Cloud-connected via secure MQTT with TLS encryption. Manage entire buildings remotely through our platform.
Protection
Detects high and low voltage anomalies and automatically cuts off supply to protect connected loads. Reconnects once voltage stabilizes within safe limits.
Live Dashboard & Energy Limits
Track solar, grid, and battery consumption per unit in real time. Set energy quotas, enable peer-to-peer balance transfers between tenants in off-grid mode, and switch operating modes remotely.
Three Steps to Solar Distribution
Transform any building into a solar-powered smart building with our proven installation process.
Install Solar Panels
Rooftop installation after thorough analysis and planning to maximize solar potential while ensuring structural integrity of both the roof and the solar structure.
Deploy SPDUs
Our purpose-built SPDU hardware connects individual offices, shops, and apartments with solar, battery, and grid power sources seamlessly.
Monitor & Control
Every tenant can monitor their energy usage in real time. Building admins review performance and generation reports, and authorize peer-to-peer energy transfers between tenants.
Built by Engineers, for Every Roof
We don't just install panels — we engineer solar systems. Every project is custom-designed using first principles to maximize your rooftop's full potential.
Bespoke Design
Every rooftop is unique. We survey, model, and engineer each installation from scratch — no cookie-cutter templates.
First Principles Approach
We start from the top down: structural analysis, shadow mapping, orientation study — then design the optimal layout.
Maximum Solar Potential
Our engineering team specializes in extracting every possible kilowatt from your rooftop, regardless of shape or constraints.
Solar Energy for Every Home
Watch how Protostar brings rooftop solar power directly into individual apartments, transforming how residents access clean energy.
Built for Every Building Type
From residential apartments to commercial complexes, our SPDU technology adapts to any multi-unit building.
Residential Apartments
Multi-story residential complexes where solar panels on the rooftop serve individual apartment units with metered distribution.
Commercial Buildings
Office buildings and commercial spaces where tenants benefit from individual solar energy quotas with automated billing.
Hostels & PG Buildings
Student hostels and paying-guest accommodations where per-room energy distribution and limits are essential.
New Construction Projects
Builders integrating SPDU from day one, making solar distribution a built-in feature of modern offices, shops, and apartments.
Active Units
156
Today's kWh
1,247
Solar %
68%
Enterprise-Grade Monitoring
Our cloud platform gives you complete visibility and control over every SPDU in every building, from anywhere.
Bank-grade TLS encryption for all data in transit
Sub-second real-time updates via MQTT protocol
Globally distributed cloud infrastructure
IEEE-754 precision for energy measurements
Trusted by Families
Hear from the families who experience the benefits of solar energy distribution in their homes every day.
Ready to cut your energy bills and go off the grid?
Join the growing number of buildings across India that are distributing solar energy directly to individual offices, shops, and apartments with Protostar's SPDU technology.
Enquire Now