Cornwall Living

Reducing bills this winter

Smart energy solutions slash household heating costs with clever pairing.

GreenGenUK has earned recognition as one of the country’s top ten Boiler Upgrade Scheme voucher installers, placing this Cornwall-based company alongside major national players. The achievement reflects the firm’s rapid expansion across the South West, with replacement heat pump installations now carried out on a regular basis in Cornwall and beyond.

The company’s success lies in helping homeowners get the most from their heat pump systems. While heat pumps already offer outstanding efficiency and can be further supported through the Boiler Upgrade Scheme, pairing them with a smart battery system makes them even more cost-effective. By storing electricity when rates are lower on off-peak tariffs, homeowners can enjoy sustainable, affordable heating throughout the winter months.

GreenGenUK’s solution centres on intelligent energy management through battery storage systems paired with time-of-use tariffs. This approach enables “load shifting” – storing inexpensive overnight electricity and deploying it during peak daytime heating demands. The company’s case studies demonstrate remarkable results: one customer reduced December heating costs from £308 to £114.88, achieving savings exceeding 60% without compromising comfort or adjusting heat pump settings.

The firm offers three primary battery storage solutions tailored to varying household requirements. The Fox ESS provides a budget-friendly modular system, allowing homeowners to start small and increase capacity over time. These single-phase units feature competitive pricing and integrated inverter options for streamlined installations. The Sigenergy SigenStor range offers stackable modules in 5kWh, 6kWh, and 10kWh configurations, delivering high output power suitable for homes with substantial heat pump demands. The Tesla Powerwall 3 represents the premium option, combining industry recognition with superior build quality and powerful backup functionality.

The approach works regardless of solar panel installation. By charging batteries overnight on cheaper tariffs such as Octopus Go or Intelligent Octopus, homeowners can dramatically reduce heating expenses whilst supporting grid stability through increased renewable energy consumption during low-demand periods.

With the Boiler Upgrade Scheme offering £7,500 government grants until 2028, GreenGenUK advises early action as voucher availability tightens and demand intensifies. The company’s trajectory from local installer to national top-ten performer demonstrates both the growing market appetite for sustainable heating solutions and the effectiveness of combining heat pumps with intelligent energy storage.