Real roofs. Real bills. Real savings.
Across our installations, families in 300 flats get their own metered share of power from the one roof they all share. Our flagship building is documented below in full, audited detail, and you can visit it.

Scorpio – Fortune Estates
India's First Net Energy Positive Affordable Housing Project
Pune, Maharashtra
This is the building where our SPDU was invented. All 24 families share one rooftop solar system, and each flat gets its own free share of the power every month. Nobody paid anything extra for it.
24
flats, each with its own solar share
41.28 kWp
of solar on one shared roof
100 units
free per flat, every month
IGBC Platinum
green building rating
Net positive
makes more energy than it uses
₹0
green premium charged to buyers
Don't just take our word for it
Independent institutions studied our first building and published what they found. One case study is taught through Harvard Business Publishing. Another was evaluated by CRISIL for a programme backed by the European Union.
Harvard Business Publishing
Indian Institute of Management Bangalore · 2024
Decarbonizing the Real Estate Sector: One Building at a Time
A 14-page strategy case study authored by IIM-Bangalore faculty and published on Harvard Business Publishing, tracing how Scorpio became India's first net energy positive affordable housing project, and how Protostar's SPDU technology was born from the challenge of making solar energy accessible to every individual homeowner.
View PublicationAFD · European Union · NHB
CRISIL Risk and Infrastructure Solutions · 2022
Sunref India Programme – Success Story Booklet
Selected among India's top 11 green affordable housing projects, Scorpio was independently evaluated by CRISIL under the SUNREF India Programme, a tri-party initiative by the Agence Française de Développement (AFD), the European Union, and the National Housing Bank to demonstrate the viability of green and affordable housing across India.
Sponsored by: Agence Française de Développement (AFD), European Union & NHB
View Publication