Table 3 Uses of controlled environment agriculture energy model studies

From: The emergence of indoor agriculture as a driver of global energy demand

Model study type

Country

Facility type

Quantified trade-offs between yields and energy use as a function of indoor air temperature, light intensity, and photoperiod13

USA

Plant factory

Quantified interactions between lighting, heating, and cooling energy needs by hour, month, and location143

Korea and Indonesia

Plant factory

Evaluated heating fuel choices, and the effects of heat recovery and cogeneration51

Italy

Greenhouse

Quantified energy use of a range of facility types144

Portugal

Greenhouse; Plant factory

Isolated effects of geography and artificial light levels on yields145

UAE, Italy, and Finland

Plant factory

Performed parametric studies for scaling-up a national estimate of greenhouse heating energy needs98

Syria

Greenhouse

Estimated energy savings for a wide range of window, insulation, and wall-to-floor-area ratios, finding less than a 10% savings potential, irrespective of cost96

UAE, Netherlands, Sweden

Plant factory

Identified a 33% total energy-saving opportunity, based on a detailed energy audit, most of which involved correcting design and operational deficiencies as distinct from introducing improved equipment44

USA

Plant factory

Assessed potential effects of energy efficiency improvements for lighting technology, building insulation levels, exterior albedo, glazing type, environmental control, how energy demand fluctuates by season and geography, and the potential contribution of on-site solar energy systems62,82,96,107,115,146,147

Multiple countries

Various