GSHPs and the Renewable Heat Incentive

Market Context Long term strategic role for heat pumps  The 4 th carbon budget ascribes a prominent long-term role for heat pumps in achieving binding domestic emissions reductions Long term strategic role for heat pumps  The 4 th carbon budget ascribes a prominent long-term role for heat pumps in achieving binding domestic emissions reductions

Market Context  UK Heat Strategy - “The Future of Heating, Meeting the Challenge” DECC, 2013  Indicates a clear and strategic role for heat pump technology  UK Heat Strategy - “The Future of Heating, Meeting the Challenge” DECC, 2013  Indicates a clear and strategic role for heat pump technology

Market Context  22m homes in the UK  >4m homes off the gas grid  Those heated by oil, lpg and electricity are the “low hanging fruit”  22m homes in the UK  >4m homes off the gas grid  Those heated by oil, lpg and electricity are the “low hanging fruit”

GSHP’s & the Domestic RHI Domestic RHI  Aimed at domestic installations  Rewards generation of renewable heat, deemed  RHI pays on Renewable Heat contribution  GSHP will always provide more renewable kWh/yr than an ASHP due to higher efficiency  Higher efficiency also yields larger fuel cost savings Domestic RHI  Aimed at domestic installations  Rewards generation of renewable heat, deemed  RHI pays on Renewable Heat contribution  GSHP will always provide more renewable kWh/yr than an ASHP due to higher efficiency  Higher efficiency also yields larger fuel cost savings

GSHP’s & the Domestic RHI Target market  RHI will drive opportunities for larger, off gas grid properties  Private domestic retro fit  Oil or lpg heated  High fuel bills, bulk fuel purchases  Higher heat loads  >16kW, single phase electricity supplies  Existing heat distribution systems  Higher flow temperatures Target market  RHI will drive opportunities for larger, off gas grid properties  Private domestic retro fit  Oil or lpg heated  High fuel bills, bulk fuel purchases  Higher heat loads  >16kW, single phase electricity supplies  Existing heat distribution systems  Higher flow temperatures

GSHP’s & the Domestic RHI  Benefit 1:Attractive GSHP Tariff /kWh: 18.8p  Benefit 2:RHI paid on Renewable Heat contribution. Higher intrinsic SPF for ground source means higher Star Rating and therefore more renewable kWh/yr  Benefit 3:Flat tariff rate structure means Domestic RHI will benefit larger properties By definition likely to have more land area KENSA HAS SINGLE PHASE OUTPUT UNITS UP TO 24kW!!  Benefit 4: No planning or noise (MCS022) issues to deal with!  Benefit 1:Attractive GSHP Tariff /kWh: 18.8p  Benefit 2:RHI paid on Renewable Heat contribution. Higher intrinsic SPF for ground source means higher Star Rating and therefore more renewable kWh/yr  Benefit 3:Flat tariff rate structure means Domestic RHI will benefit larger properties By definition likely to have more land area KENSA HAS SINGLE PHASE OUTPUT UNITS UP TO 24kW!!  Benefit 4: No planning or noise (MCS022) issues to deal with! 3 bed semi: 8kW RHI: £11k / 7yrs 4 bed det: 12kW RHI: £17k / 7yrs 5 bed det: 15kW RHI: £20k / 7yrs 8 bed mansion: 24kW RHI: 37k / 7yrs

GSHP RHI Example 5 bedroom house Domestic RHI example for Ground Source Heat Pumps  5 bed property  4-5 occupants  180m2 floor area  Circa 1960’s build  Basic insulation measures – cavity wall, loft, glazing  15kW heat load  Heating via radiators (50 ° C – 3 Stars)  EPC: 21,000kWh/yr  Land area required (slinkies): 720m2 5 bedroom house Domestic RHI example for Ground Source Heat Pumps  5 bed property  4-5 occupants  180m2 floor area  Circa 1960’s build  Basic insulation measures – cavity wall, loft, glazing  15kW heat load  Heating via radiators (50 ° C – 3 Stars)  EPC: 21,000kWh/yr  Land area required (slinkies): 720m2

GSHP RHI Example 5 bedroom house Domestic RHI example for Ground Source Heat Pumps  £1082 per year fuel cost saving vs oil  £2845 first year RHI income  £27,492 combined benefit over 7 years  Before index linked tariff increases and fuel price inflation  Typical installation cost: £18,000  Based on slinkies  Payback: 5 years  Rate of return: 11.5% 5 bedroom house Domestic RHI example for Ground Source Heat Pumps  £1082 per year fuel cost saving vs oil  £2845 first year RHI income  £27,492 combined benefit over 7 years  Before index linked tariff increases and fuel price inflation  Typical installation cost: £18,000  Based on slinkies  Payback: 5 years  Rate of return: 11.5%

Kensa On Line RHI Calculator Website based tool Calculates expected RHI and fuel saving benefit under domestic RHI Varies results based on geographical location Suggests likely land area required for slinkies Aimed at helping driving enquiries for installers

Kensa GSHP Range Designed and Built in the UK, for the UK Social Housing New/Refurb Private Domestic / Self Build - New/Refurb Flats and apartments New/Refurb Non Domestic Individual Communal Compact 3.5 – 12kW 55ºC flow temp High Temp 3.5 – 8.5kW 65ºC flow temp Shoebox 3kW, 6kW 65ºC flow temp Compact 3.5 – 12kW 55ºC flow temp High Temp 3.5 – 8.5kW 65ºC flow temp 1 compressor 2 compressor Compact 12 – 24kW 1ph 55ºC flow temp Hybrid 15kW, 21kW 1ph 65ºC flow temp Communal Shoebox 3kW, 6kW 65ºC flow temp Plant Room 20 – 75kW Three Phase Single compressor 50ºC flow temp

Non Domestic RHI  Launched 2011  Includes support for residential district heating systems  Recently uplifted tariffs for ground source heat pumps  Increased from 4.3p/kWh to 8.7p/kWh  Payments made over 20 years, based on metering  Includes support for new build  District residential schemes can be combined with ECO funding  More attractive long term rate of return than domestic scheme  Launched 2011  Includes support for residential district heating systems  Recently uplifted tariffs for ground source heat pumps  Increased from 4.3p/kWh to 8.7p/kWh  Payments made over 20 years, based on metering  Includes support for new build  District residential schemes can be combined with ECO funding  More attractive long term rate of return than domestic scheme

Kensa micro-district solution  Individual heat pump at each dwelling  Linked to a communal ground array  New build or retro fit  Capital subsidy provided by Energy Company Obligation (retro fit)  Supported by 20 year income stream through the Non Domestic Renewable Heat Incentive  Technically robust solution  Myriad of operational and tenant fuel cost benefits over other solutions  Individual heat pump at each dwelling  Linked to a communal ground array  New build or retro fit  Capital subsidy provided by Energy Company Obligation (retro fit)  Supported by 20 year income stream through the Non Domestic Renewable Heat Incentive  Technically robust solution  Myriad of operational and tenant fuel cost benefits over other solutions

Traditional district scheme problems  Traditional schemes featuring a central boiler plant are not popular  Difficult to implement as a retro fit solution  Inefficient  Heat losses as hot water circulated through the “district”  Burdensome  HA has to manage billing  Bulky  Requires considerable space  Expensive  Requires back up system to eliminate risk of catastrophic district-wide failure  Traditional schemes featuring a central boiler plant are not popular  Difficult to implement as a retro fit solution  Inefficient  Heat losses as hot water circulated through the “district”  Burdensome  HA has to manage billing  Bulky  Requires considerable space  Expensive  Requires back up system to eliminate risk of catastrophic district-wide failure

Kensa micro-district solution Ground source heat pump Kensa high temperature units, installed externally Ground source heat pump Kensa high temperature units, installed externally Micro district heating Individual gshp per property linked to a shared ground array serving 2+ properties Micro district heating Individual gshp per property linked to a shared ground array serving 2+ properties Technically robust Smaller number of deeper boreholes Flexibilty over borehole location No plant room or central pump Technically robust Smaller number of deeper boreholes Flexibilty over borehole location No plant room or central pump Energy saving Low cost, low carbon heating and hot water reducing energy bills Energy saving Low cost, low carbon heating and hot water reducing energy bills Scaleable solution Can be applied to apartment blocks or clusters of terraced or semi detached houses/bungalows, sheltered accommodation, holiday lets and more… Scaleable solution Can be applied to apartment blocks or clusters of terraced or semi detached houses/bungalows, sheltered accommodation, holiday lets and more… Renewable Heat Incentive 20 year income stream for district schemes under the non domestic RHI Renewable Heat Incentive 20 year income stream for district schemes under the non domestic RHI Energy Company Obligation (Retro fit) Attractive capital subsidy, especially when displacing electric heating Energy Company Obligation (Retro fit) Attractive capital subsidy, especially when displacing electric heating Simple billing No centralised billing – each tenant has control over own heating system and energy bill Simple billing No centralised billing – each tenant has control over own heating system and energy bill New Build New build developments are eligible for the non-domestic RHI New Build New build developments are eligible for the non-domestic RHI

Micro-district costed example Micro District Ground Source Heat Pump System Based on 2 bedroom End of Terrace Lifetime CO2 savings 87 tonnes Typical annual running cost saving vs NSH £450 Total capital cost £15,000 Heat pump, ancillaries and installation£3900 Boreholes and ground collector system£6600 New radiator system and DHW cylinder£4100 Design (EPC, borehole design)£400 Existing system replacement costs £2500 ECO funding contribution £3500 Total Net Cost £9000 Total RHI contribution £16,000 Overall rate of return (IRR) 6% Air Source HP 67 tonnes £350 £7850 £ £4100 £250 £2500 £0 £5350 £2900 0%

New Builld - Kensa Shoebox System architecture  Individual ground source heat pump and hot water cylinder in each apartment  Low temperature primary circuit  Communal Ground array  Eligible for RHI payments – considered as district heating System architecture  Individual ground source heat pump and hot water cylinder in each apartment  Low temperature primary circuit  Communal Ground array  Eligible for RHI payments – considered as district heating 3kW capacity Small & extremely quiet Provides heating & hot water Heat source for Shoebox heat pumps Multiple boreholes m deep

District Htg New Build Example Abbeydale Hall - Luxury new build apartments  4 blocks of 3 apartments  Each shares a communal borehole field of 3 x 130m boreholes  3kW Shoebox heat pump installed in each flat  Developer retains the non domestic RHI Abbeydale Hall - Luxury new build apartments  4 blocks of 3 apartments  Each shares a communal borehole field of 3 x 130m boreholes  3kW Shoebox heat pump installed in each flat  Developer retains the non domestic RHI

Reasons why GSHP’s win! Domestic RHI  Very attractive domestic RHI tariff rates and high renewable heat content  Compelling rates of return / payback, especially in larger properties  Kensa range >16kW single phase models – ideal for larger domestic properties District and Non Domestic RHI  District residential heating solutions possible using the Non Domestic RHI  “Decentralised” district systems possible by linking ground loops – not possible with any other technology  Opportunity to apply in new build  Opportunity to tap in to ECO funding (district retro fit) PLUS OF COURSE…  Planning exempt (permitted development rights)  No noise nuisance  Lowest possible running costs and long life expectancy Domestic RHI  Very attractive domestic RHI tariff rates and high renewable heat content  Compelling rates of return / payback, especially in larger properties  Kensa range >16kW single phase models – ideal for larger domestic properties District and Non Domestic RHI  District residential heating solutions possible using the Non Domestic RHI  “Decentralised” district systems possible by linking ground loops – not possible with any other technology  Opportunity to apply in new build  Opportunity to tap in to ECO funding (district retro fit) PLUS OF COURSE…  Planning exempt (permitted development rights)  No noise nuisance  Lowest possible running costs and long life expectancy