Quick look at our latest RHI results
During the period Oct- Dec 2014, our heat pump produced 5137 kWh of heat. The cost of electricity to produce this heat was £113.99. Which equals 2.2p per kWh. The Renewable Heat Incentive payments generated during this time was £369.86. As a result this means we have effectively been paid £255.87 to heat the Heat Collector offices (150sqm). Why not subscribe to our feed?
Daily Data
Here we record the daily readings from the heat pump installed in the Heat Collector offices. As an MCS accredited installer, we think it’s important to have an installation that the customer can come and see. This page is updated daily and shows how much heat has been produced, how much electricity it’s taken to produce it and how much cashback from the government RHI is due each day. As it is a non domestic installation we get 8.95 pence per kWh for the next 20 years, if it was domestic it would be 19.33 pence per kWh for the next 7 years. (Have a look at our RHI page for a full explanation of how it works)
Historical Data Taken From The Heat Collector Heat Pump
| Period | Heat Produced | Electricity Used by heat pump | Efficiency achieved | Seasonal Performance Factor (SPF) | Cost of electricity used by heat pump @ 13.25p/kWh | RHI Generated @ 8.84p/kWh | Total savings compared to Gas @ 4.66p/kWh @ 80% | Total savings compared to Oil @ 5.09p/kWh @ 80% | Total savings compared to LPG @ 6.56p/kWh @ 80% | Total savings compared to Electric @ 13.25p/kWh |
|---|---|---|---|---|---|---|---|---|---|---|
| Q3 2015 | 3,011 kWh | 708 kWh | 425 % | 4.3 | £93.83 | £266.17 | £347.73 | £363.92 | £419.24 | £571.30 |
| Q2 2015 | 3,202 kWh | 480 kWh | 667 % | 6.7 | £63.58 | £283.06 | £405.99 | £423.20 | £482.04 | £643.74 |
| Q1 2015 | 13,721 kWh | 2,206 kWh | 622 % | 6.2 | £292.24 | £1,212.94 | £1,719.95 | £1,793.70 | £2,045.82 | £2,738.73 |
| Q4 2014 | 7,491 kWh | 1,281 kWh | 585 % | 5.8 | £169.68 | £662.20 | £928.88 | £969.14 | £1,106.79 | £1,485.08 |
| Q3 2014 | 280 kWh | 73 kWh | 385 % | 3.9 | £9.63 | £24.75 | £31.43 | £32.93 | £38.08 | £52.22 |
| Q2 2014 | 2,234 kWh | 510 kWh | 438 % | 4.4 | £67.58 | £197.49 | £260.04 | £272.05 | £313.10 | £425.91 |
| Q1 2014 | 523 kWh | 116 kWh | 451 % | 4.5 | £15.35 | £46.23 | £61.34 | £64.15 | £73.77 | £100.18 |
| Grand Total | 30,462 kWh | 5,373 kWh | 567 % | 5.7 | £711.89 | £2,692.84 | £3,755.36 | £3,919.09 | £4,478.83 | £6,017.16 |
Thats a load of data! Confused?
Dont worry! Heat pumps are quite simple but sometimes the data is confusing. Lets explain a few of the fields in the table above that sometimes cause confusion!
Period
We've broken the daily readings we take from our heat pump monitoring system down in to quarters so you can easily compare the heat pump cost and performance to your current fuel type.
Heat Produced
This is how much heat has been produced from the heat pump, just like electricity this is measured in kilowatts (kWh). The Government Renewable Heat Incentive (RHI) Scheme currently pays back 19.33p per kWh on deemed usage for residential properties & 8.95p per kWh for Tier 1 usage on commercial properties. The current schemes are running for 7 years and 20 years respectively.
Electricity Used
Is just that, how much electricity it has taken to run the heat pump, the kilowatt hour, or kilowatt-hour, or symbols kWh, kW·h, or kW h, or unit is an amount of energy equal to what it takes to run 10 x 100 watt light bulbs for one hour.
Efficiency achieved
Efficiency achieved onal Performance Factor (SPF) is a measure of how energy efficient your heat pump is. Put simply, the higher your SPF value the more energy efficient your system is.
Seasonal Performance Factor (SPF)
The Seasonal Performance Factor (SPF) is a measure of how energy efficient your heat pump is. Put simply, the higher your SPF value the more energy efficient your system is.
Cost of electricity used by heat pump
As we know how much electricity we have used to power the heat pump, we can also workout how much it has cost to run it. This is calculated using a cost of 15.14p per kWh.
Non Domestic RHI generated
A heat pump operating at COP (Coefficient of performance) of 3.5, provides 3.5 units of heat for each unit of energy consumed (i.e. 1 kWh consumed would provide 3.5 kWh of output heat). We designed the system in the Heat Collector offices from the ground up with the view of maximizing the COP, as a result we are currently running at 5.9 or 590% efficiency!.
Total savings compared to gas
This shows the price we would have paid had we used natural gas.
Total savings compared to oil
This shows the price we would have paid had we been using oil to heat the building.
Total savings compared to LPG
Here we show how much it would have cost us to heat our building with LPG Gas.
Total savings compared to electric
Here we show the cost had we been using electric to hear our building. This represents the largest saving of all fuel types.
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