MallGrid
A B2B operating system for retail property owners running the RE100 playbook — modeling solar, PPA, and on-site generation tradeoffs across a portfolio.
Sustainability and facilities teams at Japanese shopping mall and retail real estate operators pursuing net-zero targets
- Portfolio-level RE100 roadmap simulator with capex, payback, and CO2 impact per site
- Solar carport and rooftop feasibility checker using building footprint and irradiance data
- PPA marketplace connector with rate comparison across regional renewable suppliers
- Tenant-by-tenant emissions reporting module for Scope 2 disclosure
AEON's 100% RE achievement at 159 sites is the template every regional mall operator is now being asked by shareholders to replicate — and most lack the modeling tooling to plan it.
AEON Mall publicly committed to 100% RE across 160+ Japan malls by FY2040 (Nikkei), and Japan leads the world with 94 RE100 member companies as of late 2025 (deepwind.jp), creating a real — though niche — pull from retail property owners facing shareholder pressure.Retailer Aeon to use 100% renewable energy at 160-plus Japan malls ↗RE100 In Japan (2026): Company List, PPA Procurement & Offshore Wind Guide ↗
Japan-side incumbents like thingnario cover electricity retailers' PPA/wheeling ops but no tool I found targets the specific niche of retail-mall portfolio RE100 trade-off modeling (rooftop solar siting + PPA vs on-site vs grid RE mix per site); SourceForge/SoftwareAdvice lists only generic solar-design or energy-management software.About thingnario ↗Best Solar Design Software in Japan - SourceForge ↗
Comparable B2B sustainability/energy SaaS (EnergyCAP, Measurabl, Wattics) command enterprise pricing in the tens of thousands USD/yr per portfolio, and Japanese PPA economics are now favorable (avg ~JPY11/kWh solar FY2023); however the addressable market is a few dozen mid-large mall operators, capping upside.Corporate PPA in Japan (2024 edition) – Renewable Energy Institute ↗Best Energy Management Software - 2026 Reviews & Pricing ↗
RE100 commitments in Japan are growing fastest globally (94 members, most of any country) and AEON's 2040 net-zero horizon gives a 15+ year tailwind; decarbonization reporting is also tightening under Japan's GX framework, supporting durable recurring demand.Latest List of RE100 Japanese Companies [As of end of September 2025] ↗RE100 In Japan (2026): Company List, PPA Procurement & Offshore Wind Guide ↗
Building the trade-off model requires stitching together Japanese rooftop irradiance data, utility tariffs, PPA pricing curves, and per-property energy/SCADA data — all available but messy; credible Japan-specific PPA modeling plus geospatial tooling is a 6–12 month MVP, not trivial, and AEON-grade customers will expect Japanese-language UX.Aeon Mall's solar strategy: powering growth and resilience ↗Corporate PPA In Japan: Structures, Pricing, FIP Policy & Offshore Wind Guide ↗