Green Building Council of Namibia Convention By Glenn Howard Presented by Carina Muller

Transcription

1 Green Building Council of Namibia Convention 2015 By Glenn Howard Presented by Carina Muller

2 What is the status of building energy consumption? How much could we save?

3 Existing Building Performance Rating Tool Energy category points = 27% of rating: Energy reduction related to GHG emissions (25 points) Peak electricity demand reduction (2 points)

4 Benchmarking is the process of comparing your energy performance to something similar, eg your own performance during a previous period similar buildings standards for buildings

5 So how does Namibia fare with building energy use? Source information: NEEP our own research and projects SANS 204

6 NEEP: Namibia Energy Efficiency Programme (in buildings) NEEP was funded by the UNDP, GEF, MME project managed by Namibia Energy Institute

7 More than 52 buildings sampled from Windhoek, Keetmanshoop, Oshakati/Ongwedivaand Walvis/Swakop Building occupancies per SANS F1 G1 H1 Large Shops (including shopping malls) Offices Hotels Data sampled: Billing records, floor area, occupancy, other energy (LPG, diesel, paraffin) & interviews

8 Large shops split into Supermarket & Warehouse Office buildings split between Public & Private Energy & demand benchmark per SANS 204 Energy: kwh/m²/annum (including other energy sources) Demand: VA/m² (averaged)

9 Average annual energy consumption per locality

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11 Average demand benchmark per locality

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13 N$2.2M/annum N$530k/annum N$3.0M/annum

14 Perception of own building EE (2012) 77% believe they are normal or highly efficient 83% will be happy with up to 20% savings 36% prepared to pay higher rent for energy efficiency 44% prepared to pay higher rent for a green building

15 When? New building get it right first time GREEN STAR SA New Building Existing building any time or at trigger Existing building any time or at trigger points: sale of the property change in the lease replacement of equipment refinancing, remodelling, renovation or rehabilitation GREEN STAR EBP V1 is useful to benchmark or improve performance

16 Systematic assessment of energy use: Sources of energy Where it is used Variance between input and usage Effectiveness and efficiency

17 Objectives of Energy Audit a) Identify energy saving opportunities. b) Propose remedial measures aimed at reducing energy consumption. Energy savings are usually only of interest to commercial entities if there is a return on investment.

18 a) A walk-through audit aimed at familiarising the survey team with the facility. b) Detailed site data gathering of all appliances to obtain a load inventory. c) Collection and analysis of electricity supply authority billing data. d) Logging of main electrical supply loads. e) Gathering of any information related to other energy sources. f) Analysis of the load inventory to identify load contribution and reconciling with the billing data and logged information. g) Consideration and analysis of energy efficiency opportunities

19 Energy source (electrical, gas, diesel, paraffin, solar, wood) Air conditioning (HVAC) and refrigeration Lighting Efficiency (luminaire and lamp) Control Daylight Illumination levels Water heating Appliances Industrial engineering Energy rating (TCO LCC) Elevators & escalators Computer energy saving modes Power factor correction Renewable energy MAINTENANCE (Scheduled maintenance) Etc.

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28 Recommended for immediate implementation (from 12 buildings) N$5.5M investment, N$41M saving over 10 years 3GWh annual energy savings, 7% energy reduction 700kVA monthly demand savings, 14% demand reduction 1.6 million tons CO 2 reduction Caution with some, conservative approach used, more savings are possible Carbon Emissions Reduction Tons Opportunity Capital Cost Annual energy saving CO 2 /annum Monthly demand saving ROI IRR Simple Payback Breakeven PV Cumulative Saving Lighting N$ 2,190,110 1,279,558 kwh 703, kva 180% 202% 1 years 14 months N$ 17,913,726 Computer N$ - 368,179 kwh 202,499 - kva N$ 4,607,833 Water heating N$ 2,437,368 1,208,518 kwh 664, kva 30% 41% 5 years 31 months N$ 14,495,274 Power factor correction N$ 335,000 - kwh kva 63% 75% 2 years 18 months N$ 2,576,042 Air conditioning N$ 80,000 56,100 kwh 30,855 - kva 79% 91% 1 years 14 months N$ 639,899 Refrigeration N$ 425, ,318 kwh 62,875 - kva 27% 8% 5 years 50 months N$ 540,903 TOTAL/AVERAGE N$ 5,467,723 3,026,673 kwh 1,664, kva 122% 138% 2 years 19 months N$ 40,773,678

29 Broad organisational awareness Monitor and measure Energy management plan short& long term Integrated into organisation management and reporting structure Provide leadership (Champion) and a team Top-down commitment expressed as policy GREEN STAR SA EBP tool addresses these

30 Energy is a manageable expense Sustainable building, Waste not your energy! Thank you Carina (carina@emcongroup.com)