Wales’ Solar Mandate
From March 2027, Wales will require renewable electricity generation in every new‑build home - effectively making solar the go‑to choice for developers. Published: March 17, 2026
Tenant Power is a pioneering energy solution designed to bring renewable technology into rental homes, without placing the financial burden on tenants.
It works by pairing approved solar and battery installations with the Octopus Tenant Power tariff, giving tenants guaranteed savings while enabling landlords to earn from the clean energy their property generates.
Landlords invest in low‑carbon technology.
Tenants save with a guaranteed 30% discount on electricity unit rates.
Landlords earn from solar generation and battery flexibility.
Everyone benefits from cleaner, greener energy.
It’s simple, transparent, and built for long‑term value.
You install an approved renewable energy system – typically solar PV paired with a home battery such as a Duracell Energy Battery. This system generates clean electricity and stores excess energy for later use.
You then earn a return from:
Solar Generation -Your system produces electricity that contributes to your return.
Battery Flexibility Services – Your battery can participate in energy flexibility programmes, generating additional income.
Property Value Growth – Low‑carbon upgrades make your property more attractive to renters and future buyers, while supporting EPC improvements.
Reduced Void Periods – Energy‑efficient homes with lower bills are more desirable, helping you attract and retain tenants.
You simply sign up for the Octopus Tenant Power tariff and start saving immediately.
Guaranteed 30% Discount – Your electricity unit rate is reduced by a fixed 30%, giving you predictable, meaningful monthly savings.
Cleaner, Greener Living – Your home is powered by renewable energy generated right on your roof.
No Upfront Costs – The landlord covers all installation costs — you only benefit.
Smarter Energy Use – The battery stores excess solar energy, reducing reliance on the grid and helping stabilise your energy bills.
Peace of Mind – You get a modern, energy‑efficient home without the complexity or expense of managing the technology.
The UK is moving rapidly toward a low‑carbon future. Energy efficiency standards are tightening, and tenants are increasingly prioritising sustainability and affordability.
Tenant Power helps meet these demands by:
Reducing carbon emissions
Lowering household energy costs
Improving EPC ratings
Supporting the transition to renewable energy
Making sustainable living accessible in rental homes
Helping landlords stay ahead of regulatory changes
It’s not just an energy solution – it’s a long‑term investment in better housing.
A typical Tenant Power setup includes:
Solar PV Panels – Capture clean, renewable energy directly from the sun.
Battery Storage – A high‑performance home battery that stores energy for use day and night.
Heat Pump (Optional) – A highly efficient heating system that reduces carbon emissions and energy costs.
EV Charger – Perfect for tenants with electric vehicles or landlords looking to future‑proof their property.
Smart Monitoring – Real‑time insights into energy generation, storage, and usage.
All equipment is approved to ensure compatibility with the Tenant Power tariff and maximum performance.
Earn from solar generation
Earn from battery flexibility
Increase property value
Improve EPC rating
Reduce void periods
Attract eco‑conscious tenants
Future‑proof your portfolio
Guaranteed 30% discount on electricity
Lower monthly bills
Cleaner, greener energy
No installation or maintenance costs
More stable energy usage thanks to battery storage
Private landlords
Build‑to‑rent developers
Housing associations
Tenants seeking lower bills
Renters who want greener living
Property investors focused on sustainability
Wales – covering all regions including South Wales, Mid Wales, North Wales, and West Wales.
South West England – including the Bristol & Bath area, Gloucestershire & The Cotswolds, Somerset & Taunton, and Wiltshire & Swindon.
Wider West & Midlands – reaching parts of Herefordshire, Worcestershire, and surrounding areas.
Here you will find answers to Tenant Power’s frequently asked questions. If you have any further questions, our team are more than happy to support.
No. All technology is funded by the landlord.
Tenants receive a guaranteed 30% discount on their electricity unit rate.
A return from solar generation and battery flexibility, plus a more valuable, sustainable property.
Yes – solar, batteries, and heat pumps all contribute to higher EPC scores.
Yes. All installations must use approved equipment to qualify for the Tenant Power tariff.
The system remains installed, ready to benefit the next tenant – making your property more attractive.