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The system would be driven by two Capstone C60 MicroTurbines interconnected to work in harmony with the Pacific Gas & Electric grid. As part of the statewide Self-Generation Incentive Program of the California Public Utilities Commission (www.cpuc.ca.gov), PG&E will fund 30% of the total installed cost (see www.pge.com/selfgen for details). During normal operating hours, the microturbines would generate and load- follow the vineyard’s electricity needs, bringing higher-cost utility power consumption to a trickle. During off-peak times when rates are comparable to the onsite generation cost, the system would automatically shut down. In the event of a blackout, it automatically disconnects from the grid for safety and provides standby power. When grid power is restored, the system automatically reconnects to the grid. Net of $120,000 provided by PG&E through the statewide Self-Generation Incentive Program, the entire system would pay for itself in energy cost savings within 3 years or less. Fermentation: Patience for a Clean Energy Bouquet Vineyard 29’s fermentation tanks hold a premium Cabernet Sauvignon Quick Facts: Number of Units: 2 Capstone C60s Additional Equipment: 2 Copeland gas compressors 1 Unifin heat recovery unit 1 Nishiyodo adsorption chiller McMinn gave Axiom the go-ahead in late 2002. Integrating all the components to work properly with each other and the needs of Vineyard 29 required diligent efforts by Axiom and the installation contractor. A big issue was regulatory paperwork. Although the Capstone C60 is certified to the state’s Rule 21 grid standard, local utility people weren’t familiar with it, causing delays. Code analysis and interpretation had to be provided to building and fire officials to bone up on the latest UL-listing, CARB DG certification and other equipment regulations to which the C60 is certified. “It took more handholding than expected,” said Ray Cole of Axiom. “We had to dig through pages and pages of regulations to find snippets of vital information. We now know all about the un- and mis-documented issues, so other California vineyard installations will go much faster and smoothly.” Axiom is now specifying Capstone’s new, more efficient, all-in-one C60- ICHP system (www.microturbine.com/technology/contact.asp). While still tweaking the equipment during the summer of 2003, the region was hit with a blackout at the beginning of the vineyard’s critical crush period. “It happened at six in the morning when nobody was there,” said McMinn. “But when the foreman arrived, he saw that everything was running, thanks to our microturbines.” The turbines have been spinning along ever since. Electrical Output: Thermal Output: 120 kWe In a two-part article on cogeneration in the Nov/Dec 2003 and Jan/Feb 2004 issues of Vineyard & Winery Management (www.vwm-online.com), McMinn notes “a backup diesel generator would sit here and maybe never be used, although it would have to be run once a week just to make sure that it worked. They’re heavily polluting, they’re noisy. So the microturbine equipment is a much better alternative – we use it everyday.” * Per EPA test results: www.epa.gov/etv/pdfs/vrvs/03_vr_capstone60.pdf vs. EPA utility power plant emissions data: www.epa.gov/cleanenergy/powerprofiler.htm. NOx emissions of the C60 are 0.15 lb/MWh vs. PG&E’s 1.0 lb/MWh in the region (3.0 lbs/MWh is the national average). The sulfur dioxide (0.02 lb/MWh) and carbon dioxide (560 lbs/MWh) emissions of Capstone’s C60-ICHP are also much lower than those of utility power plants. The microturbine generator for power on or beyond the grid: • Ultra-Low Emissions • Designed for Ultra-Low Maintenance • Fuel-Flexible • Air-Cooled • One Moving Part • No Lubricants or Coolants Let Capstone create your success story. Visit www.microturbine.com or call 818-407-3770 or, toll free, 866-4-capstone (866-422-7786) to find your authorized Capstone distributor. Power when and where you need it. Clean and simple. Now. Capstone and the turbine blade logo are Registered Trademarks of Capstone Turbine Corporation. Certain data are site-specific and subject to change. Unique factors at individual sites may affect system output and performance. The next generation: C60-ICHP Up to 230 kWth or 800,000 Btu/hr 22 tons chilling Installation Objectives: • To cleanly create power, heat and chilling onsite • To ensure power certainty during outages or other grid power problems • To reduce demand on the utility power grid • To serve the heating and cooling needs of the building and wine-making process • To achieve rapid return on investment • To create energy onsite with greater fuel efficiency and fewer emissions than utility sources Exhaust is ported into a separate heat exchanger. Capstone’s latest offering integrates a very compact, higher efficiency heat exchanger atop the C60PDF Image | Crushing the High Cost of Grape “Juice” An Innovative California Vineyard Finds
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