Distributed energy (DE) is making inroads into residential markets in North America and beyond. This may come as a surprise to many, as the market for onsite power generation has long been focused on the commercial and industrial sectors. However, new research from Primen, a subsidiary of EPRI (Palo Alto, California, U.S.), finds that in a recent 12-month period, nearly 1 million onsite generators were sold to households for either their primary residences or vacation homes.

Still, only 6% of U.S. households currently have an onsite generator, most of which are portable models that are exclusively used during power outages and need to be manually started. However, a growing number of homeowners are purchasing permanently mounted, automatic systems, and nearly one in six households surveyed expressed high interest in an onsite power system that would produce the majority of their electricity requirements. About 22% of households would be interested in some form of DE, either for backup, baseload generation, a utility dispatch-leasing program or some combination thereof. These and other findings are part of Primen's “Residential Distributed Energy: Customer Views and Outlook” study, based on an online survey of 1301 households in the United States and Ontario, Canada.

The study provides an up-to-date examination of the market for residential onsite generation, including recent trends, customer views and market summaries by census regions, household income and other attributes. The report also reviews the growing markets for residential onsite generation in Europe and Japan, and the efforts by some of the European and Japanese companies to bring their products to North America.

“Companies in Europe and Japan are already making bets that residential DE is taking off,” says Primen Senior Director Nicholas Lenssen. “The world's largest investor-owned utility, Germany's E.ON, recently signed a contract to buy 80,000 units of a residential power generation system to sell in European markets over the remainder of this decade.” Meanwhile, Honda has sold some 4800 residential systems in Japan over the past fiscal year, far more than the planned 1000.

Such systems are only beginning to be commercialized in parts of North America, where, on the surface, the economics for residential baseload onsite generation are likely to make for a tough sell. “But given that some households are already paying $5000 or more for backup generation systems, the incremental cost of a baseload system may be less challenging to justify than supposed,” says Lenssen, “particularly for applications that can take advantage of the heat produced by these generators for space or water heating.”

Primen found many homeowners are willing to accept fairly lengthy paybacks for their investments in baseload DE. Among households with $100,000 in annual income, 36% say they would accept a payback of five years or longer, while for the general population, 22%, are willing to accept a similar return on investment.
Circle 151 on Reader Service Card or visit freeproductinfo.net/tdw