We have provided a ground source heat pump design with schematic drawings and ground source heat pump installation costs for both self-financed and funded split ownership shared ground loop array options versus electric night storage heater alternatives.
Kensa has calculated example costs below to illustrate the upfront finance required for self-financed and funded split ownership Shared Ground Loop Arrays in large private housing estates featuring the Kensa heat pumps.
Also included are expected running costs and income generated via the Non-Domestic Renewable Heat Incentive (RHI) over a 20 year period (the duration of the Non Domestic RHI), compared to night storage electric heating. For a bespoke quote please click here.
Heat Pump System
Shared Ground Loop Arrays
Total heat pump capacity
12 x 6kW Shoebox & 12 x 7kW Evo
Potable DHW temp
Integral immersion heaters
No (DNO friendly)
Ground array type
Total depth of boreholes
*Boreholes based on average ground conductivity. Average 18 sq/m per property – each borehole serves a minimum of 2 properties.
Total Project Costs, Savings & Returns vs Electric NSH
Running Cost Savings vs. Electric (over 20 years) ***
Servicing Costs Per Property (over 20 years)****
ECO Funding Contribution
RHI Income (over 20 years)*****
Net cost (after 20 years)******
*Carbon saving based on carbon emissions of 0.519kgCO2/kWh for electric. Assumes 100% efficiency for electric and 300% efficiency for ground source heat pumps.**NOx emission based on 44mg per kWh based on a worcester greenstar combi. ***Based on electric at 15p/kW/hr and COP of 3. ****Ground source heat pumps have no requirement for annual maintenance. However, it is good practice for the heating distribution system to be proactively checked and maintained to ensure optimum performance G3 Cylinder check will be requried. *****The non-domestic rhi is a 20 year index linked funding stream which assumes inflation at 3%. ******Net cost does not include servicing and running costs. ^ Retrofit costs include internal fit out i.e. new radiator systems. Tenant network connection fee applies.
Cumulative Deficit / Surplus Over 20 Year RHI Period