• Energy Demand

• Renewables Potential

• Mabie Farm Conclusion

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Mabie Farm Park - Conclusions

For the electricity demand, both a mini-hydro scheme and small-scale wind turbine are not feasible. The mini-hydro can only generate 0.25 kW and the power output required from the wind turbines would be 68 kW.

For space heating and hot water, the technologies that have been proposed - after applying the methodology to the Mabie farm case study – are GSHP and biomass.

Comparison between proposed systems for space heating

The ground source heat pump and biomass boiler can meet both space and water heating demands. However solar thermal does not meet hot water demand, therefore, GSHP and biomass are recommended.

Cost comparison of recommended systems

Figure 1. Cost Comparison for Space Heating

	Heat Pump	Biomass
Capital cost	£ 6,400	£ 3,280
O/M costs (approx. 1% of capital costs)	£ 64	£ 99
Annual running costs for present system	£ 2,244	£ 2,244
Annual running costs for GSHP	£ 1,541	£ 1,547
Annual savings	£ 703	£ 697
Annual PAYBACK	£ 639	£ 598
Pay back time (years)	10	5

Recommended Technology

1. 8 kW Woodchip Boiler : 82% of demand
2. Existing High Efficiency Condensing Boiler: 18% of demand