Dunstanburgh Castle Hotel Energy use and Greenhouse gas emissions

Overview Energy use charts and key facts Suggestions for reducing fossil-fuel energy Possible publicity material

Energy use charts and key facts

Hotel energy use Energy usage rose by 17% in However, degree days to base 15.5°C rose in the North East by 21%, which accounts for much of the rise.

Energy use 2010 month-by-month

Key facts – Energy use Taking average figures from 2007 to MWh/yr Electricity 35 MWh/yr Bottled gas 123 MWh/yr Oil 34.6 kwh/bed night 225 kwh/m 2 /year According to the Chartered Institute of Building and Structural Engineers (CIBSE) and the Carbon Trust, anything under 320kwh/m 2 /year is Good.

Key facts – GHG emissions Taking average figures from 2007 to tCO 2 e/yr Electricity 7.4tCO2e/yr Bottled gas 30.3tCO2e/yr Oil Electricity is a larger share of CO 2 emissions than kwh due to its higher carbon intensity.

Key facts: electricity use During the 10 months of opening, average electricity use is around 350kwh/day. This is roughly made up of the following components. *Baseload means electricity which is consumed all the time, e.g. fridges, freezers, overnight lighting etc.

Suggestions for reducing fossil fuel use These are based on a very quick review, so may not be feasible – accuracy could also be improved.

Suggestions Turn the heating down during close season – Some heating is advisable, but current oil consumption in Dec and Jan is approximately equal to that during Feb and Nov. It should be safe to reduce heating by 60% without damage to the building. SAVING: 12MWh – 1200 litres of oil – 3.5% saving on total emissions. Install solar thermal for water heating – it isn’t possible to clearly identify breakdown of water- heating, but CIBSE estimate that water heating is responsible for 10% of a hotel’s energy use. A typical panel installation saves 1200kwh/year. SAVING: 13MWh – v approx 1300 litres of oil or 3000kwh of electricity – approx 4% saving on emissions – this would perhaps require approx solar thermal panels, each of 2m 2 area. Replace appliances with the most energy efficient as they wear out – Embodied emissions mean it is rarely worth disposing of old appliances until they are irreparable. But A++ or AAA appliances are typically 30-35% more efficient than existing A appliances, so replacement of all will lead to the following saving. SAVING: 8MWh of electricity – 4.5% saving on total emissions. Reduce idle appliance time in the kitchen – although this is hard to absolutely confirm, the Watts-on records suggest that kitchen appliances are all turned on upon arrival rather than when needed. Keeping energy-intensive appliances switched off for a further 30 mins per day may be achievable. SAVING: 3.6MWh of electricity – 2% saving on total emissions.

Publicity material Some material for a wall in the hotel

What we’ve done In the last 4 years we have –Insulated the hotel –Installed a new high-efficiency oil-fired boiler. –Installed rainwater harvesting to reduce our water use. –Replaced all incandescent high-energy lighting with fluorescent low-energy lighting –[More details on these?] In the next 4 years we will –Install solar photovoltaic panels on the hotel roof. –Buy the most energy efficient electrical appliances, as we replace them. –Buy ultra-low energy LED bulbs as we replace fluorescent lighting. Over the period , our energy usage has been 225kwh/m 2 per year. This is rated Good under the Carbon Trust yardstick for small hotels. This is especially good since, unlike many hotels, we do all our laundry in-house.

Our CO 2 emissions % 2010 was the coldest year since We hope to improve in 2011.

2010, month-by-month

Or looked at another way…

Suggestions for further work Could seek carbon trust standard - need to –Provide an accurate footprint measurement including all required emission sources. –Demonstrate an absolute reduction of your footprint or equivalent relative efficiency improvement [this could be problematic] –Demonstrate good carbon management including carbon governance, accounting, reduction methods and targets. £450 fee 3-4 days work for me (say £200-£250 incl. work so far)