--- title: "Cosy Octopus Tariff vs Boiler Upgrade Scheme | Greentech" description: "How the Cosy Octopus tariff and the £7,500 Boiler Upgrade Scheme grant combine on a Manchester heat pump install — total savings, eligibility, how to apply." lang: en-GB json-ld: | [ { "@context": "https://schema.org", "@type": "LocalBusiness", "name": "Greentech Renewables", "image": "https://www.greentechrenewables.co.uk/logo.png", "description": "MCS Certified Solar Panel and Battery Storage Installers in Greater Manchester. Trusted by 2000+ UK homeowners for renewable energy solutions.", "address": { "@type": "PostalAddress", "addressLocality": "Greater Manchester", "addressCountry": "GB" }, "telephone": "0333 577 7010", "email": "admin@greentechrenewables.co.uk", "url": "https://www.greentechrenewables.co.uk", "priceRange": "££", "aggregateRating": { "@type": "AggregateRating", "ratingValue": "4.9", "reviewCount": "105" }, "sameAs": [ "https://www.facebook.com/greentechrenewables", "https://www.instagram.com/greentechrenewables" ], "hasOfferCatalog": { "@type": "OfferCatalog", "name": "Renewable Energy Services", "itemListElement": [ { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Solar Panel Installation" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Battery Storage Systems" } }, { "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Air Source Heat Pumps" } } ] } }, { "@context": "https://schema.org", "@graph": [ { "@type": "Article", "headline": "Cosy Octopus Tariff vs the Boiler Upgrade Scheme — Do They Stack?", "datePublished": "2026-07-21", "dateModified": "2026-07-21", "author": { "@type": "Organization", "name": "Greentech Renewables" }, "mainEntityOfPage": "https://www.greentechrenewables.co.uk/heat-pumps/octopus-cosy-tariff-vs-boiler-upgrade-scheme" }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Can I get the Boiler Upgrade Scheme grant and the Cosy Octopus tariff together?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The £7,500 BUS grant (£9,000 for oil/LPG homes from July 2026) is a one-off installation subsidy from Ofgem, while the Cosy Octopus tariff is an ongoing electricity tariff from Octopus Energy. They are entirely independent and stack — Greentech Renewables applies for the BUS on your behalf and sets up the Cosy Octopus tariff once your heat pump is commissioned." } }, { "@type": "Question", "name": "Which saves you more — the BUS grant or the Cosy Octopus tariff?", "acceptedAnswer": { "@type": "Answer", "text": "They save in different ways. The BUS grant reduces upfront cost by up to £9,000. The Cosy Octopus tariff reduces annual running cost — Octopus quotes ~£315/year vs a gas boiler on a standard variable tariff. Over a 15-year system life the tariff saves ~£4,700 while the grant saves up to £9,000 in one hit. Combined, you save c. £13,700 on a Cosy install in Greater Manchester." } }, { "@type": "Question", "name": "Do I have to switch to Octopus Energy to get the BUS grant?", "acceptedAnswer": { "@type": "Answer", "text": "No. The BUS grant is tariff-agnostic — any MCS-certified heat pump install qualifies. Switching to Cosy Octopus is optional but recommended if you have a Cosy heat pump, because the tariff is designed around the way it heats." } }, { "@type": "Question", "name": "Is the Cosy Octopus tariff available across Greater Manchester?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Cosy Octopus is available to any UK household with a smart meter and an installed heat pump. Greentech Renewables installs across Manchester, Salford, Stockport, Bury, Bolton, Oldham, Rochdale, Trafford, Tameside and Wigan." } }, { "@type": "Question", "name": "How does Greentech handle the BUS application?", "acceptedAnswer": { "@type": "Answer", "text": "As your MCS installer we submit the BUS application to Ofgem on your behalf and deduct the grant from your invoice — you never pay it upfront and reclaim. You sign a consent form at survey stage; grant confirmation typically returns within 5–10 working days." } } ] } ] } ] --- [0333 577 7010 ](tel:03335777010)[admin@greentechrenewables.co.uk ](mailto:admin@greentechrenewables.co.uk) ★ 4.9 on Trustpilot [![Greentech Renewables - MCS Certified Solar Installers](/assets/greentech-logo-DICMm454.jpg)](/) [Home](/) Our Services Solar Energy [ Residential Solar Home solar panel systems ](/solar-panels)[ Commercial Solar Business & industrial solutions ](/commercial-solar)[ Price Estimator Get an instant quote ](/solar-estimator) Energy Storage [ Battery Storage Store excess solar energy ](/battery-storage) Heat Pumps [ Air Source Heat Pumps Efficient home heating ](/heat-pumps)[ Octopus Cosy Installer Accredited Cosy fitting in Manchester ](/octopus-cosy-heat-pump-installer-manchester)[ Boiler Upgrade Scheme £7,500–£9,000 government grant ](/boiler-upgrade-scheme-bus) EV Charging [ Home EV Chargers Charge at home ](/ev-charging)[ Commercial Charging Workplace solutions ](/ev-charging#commercial) Ready to switch to renewable energy? Get a free, no-obligation quote today [Quick Solar Price](/solar-estimator) Grant Schemes Free Solar Grants [ Grants Overview All available UK grants ](/grants)[ Warm Homes Plan £15bn government initiative ](/grants/warm-homes-plan)[ Low Income Solar Grants Free panels for qualifying homes ](/grants/low-income-solar-grants) Heat Pump Funding [ Boiler Upgrade Scheme £7,500–£9,000 heat pump grant ](/boiler-upgrade-scheme-bus)[ Check Eligibility See if you qualify ](/grants/warm-homes-plan-eligibility) Export Payments [ Smart Export Guarantee Get paid for surplus energy ](/grants/smart-export-guarantee)[ Best SEG Rates 2026 Compare export tariffs ](/grants/seg-best-rates) How to Apply [ Application Guide Step-by-step process ](/grants/warm-homes-local-grant-apply)[ Consumer Loan Scheme 0% finance from 2027 ](/grants/consumer-loan-scheme) Check if you qualify for free solar Income under £36k or on benefits? You may get free panels [Check Eligibility](/grants/warm-homes-plan-eligibility) [Case Studies](/case-studies) [0% Finance](/finance)[Quick Solar Price](/solar-estimator) Heat Pumps · Octopus Cosy # Cosy Octopus Tariff vs the Boiler Upgrade Scheme — How They Stack A £7,500 grant off the install, plus roughly £315/year off your running costs — how Manchester homeowners combine the two on an Octopus Cosy heat pump. The Boiler Upgrade Scheme (BUS) and the Cosy Octopus tariff are the two biggest levers on the total cost of ownership of a heat pump in England. One is a one-off government installation grant; the other is an ongoing time-of-use electricity tariff from Octopus Energy. They are commonly confused — but they are entirely separate schemes and, importantly, they stack. ## The Boiler Upgrade Scheme in one line A UK Government grant, delivered through Ofgem, that pays your MCS installer **£7,500** towards an air source heat pump — rising to **£9,000** for homes replacing an oil or LPG boiler from July 2026. Greentech Renewables submits the application and deducts the grant directly from your invoice. See our [full BUS 2026 guide](/boiler-upgrade-scheme-bus). ## The Cosy Octopus tariff in one line An Octopus Energy electricity tariff designed for heat pump households. It prices electricity roughly 50% below the price cap across three off-peak windows a day, matched to when a well-set-up heat pump is doing most of its heating. Octopus states an average heat pump customer saves ~£315/year on Cosy Octopus vs a gas boiler customer on a standard variable tariff. ## Do they stack? Yes — here's how the sums look On a typical 9kW Cosy install in a 3-bed Manchester semi: - **Headline install price:** c. £12,500 - **BUS grant applied at invoice:** −£7,500 - **Net you pay upfront:** c. £5,000 - **Annual saving on Cosy Octopus vs gas boiler:** ~£315 - **15-year tariff saving:** ~£4,725 - **Total combined benefit:** ~£12,225 across the two schemes For oil or LPG replacements post-July 2026, replace the £7,500 with £9,000 — total combined benefit rises to c. £13,725. ## Why the two schemes don't conflict The BUS is a subsidy paid to your _installer_ — the only requirement is that the heat pump is designed and commissioned to MCS standards. Nothing in the scheme rules restricts which energy supplier or tariff you use afterwards. Cosy Octopus is a private consumer tariff — the only requirement is a smart meter and (recommended) an installed heat pump. There is no double-counting, no clawback, and no interaction between the two. ## What Greentech Renewables handles for you - Full MCS heat loss survey and Cosy sizing (6 / 9 / 15.5kW) - BUS grant application to Ofgem, deducted from invoice - Installation and commissioning to MCS + Octopus standard - Smart meter check and Cosy Octopus tariff sign-up walkthrough ## Frequently Asked Questions ### Can I get the Boiler Upgrade Scheme grant and the Cosy Octopus tariff together? Yes. The £7,500 BUS grant (£9,000 for oil/LPG homes from July 2026) is a one-off installation subsidy from Ofgem, while the Cosy Octopus tariff is an ongoing electricity tariff from Octopus Energy. They are entirely independent and stack — Greentech Renewables applies for the BUS on your behalf and sets up the Cosy Octopus tariff once your heat pump is commissioned. ### Which saves you more — the BUS grant or the Cosy Octopus tariff? They save in different ways. The BUS grant reduces upfront cost by up to £9,000. The Cosy Octopus tariff reduces annual running cost — Octopus quotes ~£315/year vs a gas boiler on a standard variable tariff. Over a 15-year system life the tariff saves ~£4,700 while the grant saves up to £9,000 in one hit. Combined, you save c. £13,700 on a Cosy install in Greater Manchester. ### Do I have to switch to Octopus Energy to get the BUS grant? No. The BUS grant is tariff-agnostic — any MCS-certified heat pump install qualifies. Switching to Cosy Octopus is optional but recommended if you have a Cosy heat pump, because the tariff is designed around the way it heats. ### Is the Cosy Octopus tariff available across Greater Manchester? Yes. Cosy Octopus is available to any UK household with a smart meter and an installed heat pump. Greentech Renewables installs across Manchester, Salford, Stockport, Bury, Bolton, Oldham, Rochdale, Trafford, Tameside and Wigan. ### How does Greentech handle the BUS application? As your MCS installer we submit the BUS application to Ofgem on your behalf and deduct the grant from your invoice — you never pay it upfront and reclaim. You sign a consent form at survey stage; grant confirmation typically returns within 5–10 working days. ## Get a Free Cosy + BUS Quote We'll price the install, apply the BUS grant, and walk you through Cosy Octopus tariff savings for your home. [Book Free Survey](/free-quote) [0333 577 7010](tel:03335777010) See also: [Octopus Cosy Accredited Installer Manchester](/octopus-cosy-heat-pump-installer-manchester) ## Accreditations ![Our Accreditations: HIES Consumer Code, TSI Approved Code, TrustMark Government Endorsed Quality, Green Deal Approved, MCS Certified, NAPIT](/assets/solar-accreditations-CbjEg9cO.png) Public Liability Insurance – Tradesman Saver £5,000,000 – GREE55TR01 Employers Liability Insurance – Tradesman Saver £10,000,000 – GREE55TR01 Professional Indemnity – Tradesman Saver £250,000 – GREE55TR01 [![Greentech Renewables - MCS Certified Solar Installers](/assets/greentech-logo-DICMm454.jpg)](/) MCS Certified solar panel and battery storage installers serving Greater Manchester and the UK. Trusted by 2000+ homeowners. [](https://facebook.com)[](https://instagram.com)[](https://linkedin.com) ### Services - [Solar Panels](/solar-panels) - [Battery Storage](/battery-storage) - [Commercial Solar](/commercial-solar) - [Heat Pumps](/heat-pumps) - [EV Chargers](/ev-chargers) - [Price Estimator](/solar-estimator) ### Company - [About Us](/about-us) - [Reviews](/reviews) - [Blog](/blog) - [Contact](/contact-us) ### Contact Us - [0333 577 7010](tel:03335777010) - [admin@greentechrenewables.co.uk](mailto:admin@greentechrenewables.co.uk) - Unit 14, Mandale Business Park, Greenside Way, Middleton, M24 1ZE Approved Partner: ![GivEnergy Approved Installer](/assets/givenergy-logo-Dok5luMw.png)![IWA Independent Warranty Association Approved](/assets/iwa-logo-B_-IBxNh.png)[Tesla Certified Installer](/battery-storage/tesla-powerwall-review)[HIES Brochure](/wp-content/uploads/2025/09/HIES-Brochure-2.pdf) ★ 4.9 Trustpilot Rating MCS Certified HIES Consumer Code Greentech Renewables Ltd is an Introducer Appointed Representative of Ideal Sales Solutions Ltd, t/a Ideal4Finance. Ideal Sales Solutions Ltd is a credit broker and not a lender (FRN 703401). Finance available subject to status. The rate offered is always provisional and will depend upon your personal circumstances, the loan amount and the term. © 2026 Greentech Renewables Ltd. All rights reserved. VAT Reg No. 404561815 — Company Reg No. 12902505. Registered in England & Wales. - [Privacy Policy](/privacy-policy) - [Terms & Conditions](/terms-and-conditions) - [Complaints Policy](/complaints-policy)