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Discover the economic advantages of renovating buildings to Zero Net Energy (ZNE), showcasing cost savings, added value, and environmental impact. Learn practical methods and technologies to maximize natural resources and energy efficiency while achieving financial gains and sustainability goals.
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The Business Case for ZNE Buildings Kevin Bates | SHARP Development
Classic Concerns: It’s too Expensive. I wouldn’t know where to start. It’s too Risky. What if it doesn’t work? It’s too complicated to Manage. - You can’t improve an occupied building to ZNE cost effectively.
It’s too Expensive – Actual Economic Results -The additional cost to renovate to meet Developer Goals($49.84/SF) -The Value of Actual operating expense savings ($.45/SF/mo.) at a 6.5% market capitalization rate $83.08/SF -The Value of above market rent achieved ($.20/SF/mo.) at a 6.5% market capitalization rate $36.92/SF -Additional rent received due to early lease-up (3 mos. vs. avg. market time of 18 mos.) $22.81/SF -Additional leasable SF due to 6” of exterior insulation (building grew 326 SF) $7.32/SF Total Additional value if sold the day after occupancy $100.29/SF Potential Value of lower reserve requirements (HVAC replacement, TI reserves, etc.) $29.85/SF
I wouldn’t know where to start Use Building Methods and available Technology to maximize what Nature gives you for free. • Create a High Performance Envelope. -Insulated roof (R-40); Walls (R-20); Electrochromic Glass; attention to Thermal Breaks. • Have the BMS work with multiple indoor and outdoor sensors to utilize exposed Thermal Mass, Operable Windows, and Skylights, to maximize Thermal Comfort and IAQ Naturally. • Significantly reduce artificial light loads with Natural Light (skylights & Electrochromic Glass). • Install PV Array to generate remaining power needs (roughly 25% of a bldg. built to code).
It’s too complicated – What if it doesn’t work • We now have roughly 25% of the HVAC tonnage that a standard building has. - Less equipment, with fewer moving parts. • As a result of our high performance envelope, use of Thermal mass for our AC, and natural air exchange: - The HVAC equipment is almost never on, reducing maintenance and extending the life of the units. - More dependable thermal comfort and higher IAQ has resulted in fewer calls to property mgmt. • Natural Daylighting and Solar Power depend on the Sun, which is more reliable than PG&E. • The products and methods that we are utilizing are dependable and time-tested,; NOT complicated: -Solar Panels – Insulation - Thermal Mass – Skylights – Ceiling fans – Operable Windows - BMS
You can’t improve an occupied building to ZNE cost effectively 82,408 SF Manufacturing Building Renovated to ZNE while running 2 shifts, 16 hrs/day. • Reduce EUI -LED Lights -Optimized HVAC Tune-Up -Insulation -Window Film -Reflective Insulated Roof • Generation -Rooftop Solar -Parking lot Canopies -1.02 million kW System -Generates 1.6 MM kWh/yr.
Economic Results ROI for the Building Owner: • Total Investment Cost: $3,332,988 • Less tax Incentives: $1,366,535 • Net Cost after Year 1: $1,966,453 • Annual Utility Savings: $421,000 • Return on Net Cost: 21.4% • Simple payback (years): 4.67 • Increased Building Value: $6,415,385 Benefits to Manufacturing Tenant: - Cost of Power set at $0 for next 20 years • Competitive advantage when pricing L-T contracts • Reduced maintenance costs (roof, lights, HVAC) Benefits to the Environment: • Offsets the burning of over 95 Million Gallons of Gasoline over a 20 year period.