Powering the future of social housing: Smarter roofs that perform and pay back

How wienerberger and Octopus Energy are transforming social housing with solar roofing and Tenant Power

At wienerberger, we believe a roof should do more than protect a home, it should generate energy, reduce costs, and deliver long-term value. That’s why we’ve partnered with Octopus Energy to integrate a fully compatible solar-ready roofing system into RoofSpec+, enabling social housing providers to unlock the benefits of the innovative Tenant Power tariff.

This collaboration combines high-performance roofing systems with shared renewable energy savings, helping housing associations deliver measurable financial, environmental, and social impact.

A roof that pays back: RoofSpec+ meets Tenant Power

RoofSpec+ brings together wienerberger’s market-leading roofing materials into a complete specification service, designed to ensure:

• Long-term durability and performance
• Reduced lifecycle costs
• Full compliance and peace of mind

With a 15-year system guarantee and a single point of contact, RoofSpec+ gives housing providers confidence in their roofing assets.

By integrating RoofSpec+ with Octopus Energy’s Tenant Power tariff, landlords can now specify a roof that not only meets standards — but also generates financial returns through renewable energy.

What is Tenant Power and why does it matter?

Tenant Power is the UK’s first energy tariff designed to share the financial benefits of solar and battery systems between tenants and landlords.

Key benefits include:

• £200 average annual savings on tenant electricity bills
• New income streams for landlords via exported solar energy
• Additional savings when paired with low-carbon technologies like heat pumps

Tenants benefit from a fixed unit rate discount, ensuring lower energy bills year-round, including during peak winter costs.

Meanwhile, excess solar energy is exported back to the grid, generating a recurring revenue stream for housing providers. 

Solving a long-standing challenge

Historically, solar installations have delivered most financial benefits to tenants, making it difficult for landlords to justify investment. Tenant Power introduces a fair, shared savings model, unlocking large-scale adoption across social housing.

The financial impact: savings for tenants, returns for landlords

For Social Housing Providers

• Generate hundreds of pounds per property annually
• Create a predictable income stream from exported energy
• Support decarbonisation and retrofit programmes
• Offset installation and upgrade costs

For Tenants

• Fixed electricity discounts
• Around £200 per year savings on bills
• 20–30% reduction in energy costs
• Greater savings when paired with heat pumps and smart tech

This ensures tenants experience immediate, tangible financial relief, helping address fuel poverty.

Why RoofSpec+ is ideal for solar and tenant power

1. Fully engineered roofing system (15-Year Guarantee)

A complete roofing specification ensuring durability, performance, and compliance.

2. Seamless solar PV integration

Designed to incorporate solar panels and battery systems efficiently, ensuring full compatibility with Tenant Power.

3. Lower maintenance and whole-life costs

High-quality materials reduce repairs, maintenance, and long-term expenditure.

4. Future-proofed for net zero

Supports integration with heat pumps and low-carbon technologies, creating a scalable route to net zero housing.

Delivering smarter, sustainable social housing

Together, RoofSpec+ and Tenant Power offer a powerful solution for housing associations:

✔ High-performance, guaranteed roofing system

✔ Solar-powered energy generation with financial returns

✔ Lower energy bills for tenants

✔ New revenue streams for landlords

✔ Support for net zero and decarbonisation targets

✔ Proven appeal for contractors and housing providers

A new model for social housing

This is more than a roofing solution. It’s a scalable model for sustainable housing, delivering:

• Energy efficiency
• Cost savings
• Long-term asset value
• Fair financial outcomes for all stakeholders

With wienerberger and Octopus Energy, the future of social housing is smarter, greener, and financially sustainable.