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Decentralised Solar That Halves Tenants’ Bills

12/11/2025

Matt Chenery

The opportunity for social housing 

For years, rooftop solar in social housing has been held back by upfront costs, patchy funding models, and lingering distrust from past schemes. But according to Julian Wiley, founder of Zenergy Solar, the game has changed. His company’s integrated model – combining solar PV, battery storage, AI‑driven energy management, and grid trading – is now being delivered at no cost to landlords, with tenants seeing energy bills halved from day one. 

“It’s total common sense to generate on your roof, use it locally, and trade the excess,” Wiley says. “We can now do that in a way that’s bankable for funders, viable for landlords, and transformative for residents.” 

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Retrofit Society 2.0 Resident Engagement Policy & Regulation

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