“Our aquifer is the bloodstream for all farmers in the Agricultural Reserve. It’s what sustains us.” Gene Kingsbury, Kingsbury’s Orchard

This article is excerpted from the Spring 2024 issue of Plenty Magazine.  We present the initial portion of the article. You may then link to Plenty’s website to read the remainder of the piece, and see the charts and photos that accompany it.

“Our aquifer is the bloodstream for all farmers in the Agricultural Reserve. It’s what sustains us.”
Gene Kingsbury, Kingsbury’s Orchard

More often than not, when asked, folks in the D.C. metro region do not really have a fix on where the water that flows from their faucets comes from. Sure, residents and businesses know that they pay mWashington Suburban Sanitary Commission (WSSC) for their water and sewage service, and they may know that the origin of their water is the mighty Potomac River. But as to the details—filtration plant operations, the infrastructure that delivers the water from plants to homes and businesses, what happens when there is prolonged drought, these bits are hardly known.

More mysterious to many is where roughly 25-30,000 homes, businesses and farm enterprises get their water from in the nearly one-third of Montgomery County that is wholly outside the WSSC service area by design. nd that if the story I aim to share in two parts.

Updated January 30, 2024

SCA helped shape a Montgomery County zoning ordinance in 2021 that allows farmers and landowners in the Ag Reserve—working with solar developers—to place ground-based solar arrays on portions of their land if those arrays don’t take prime arable land out of agricultural use.

Under this new policy, solar arrays must meet certain requirements and be approved by county regulators. For now, the total acreage allowed for solar array placement in the Ag Reserve is 1,800 acres, which equates to about 2% of agricultural land in the county. In addition to preserving agricultural land, the rules governing the initiative protect forests and environmentally sensitive areas.

The initiative also allows homeowners who install solar (whether on their roofs or on the ground) to produce more energy than they need and sell it back into the grid—up to 100% more. Thus, if a homeowner needed 30 kilowatt hours per day for their own needs, they could produce 60 and sell 30 back to the grid.

New Report from the County

This policy and zoning change has been in effect for two years. In an assessment of the impact to date, published in late December 2023, the County’s Planning Department took stock, identified some problems, and made a few recommendations.

Updated September 6, 2023

SCA has been working with the Montgomery County Department of Environmental Protection (DEP) and County Executive Marc Elrich for five years to help develop a “zero waste”—or at least “much-less-waste”—plan for the county.  This effort encompasses a wide range of initiatives—from improved recycling to wider access to composting food scraps to piloting a project that would require residents to pay extra for tossing garbage that exceeds a certain per-household weight limit. The county is already testing some of these initiatives, or working on plans to do so. 

The less-waste effort also includes shuttering the Dickerson trash incinerator, which is one of only two in Maryland. The incinerator is old, a major polluter and has operated inefficiently for years.  In addition, it requires sending some 200,000 tons of toxic ash annually to a majority black community outside of Richmond, VA. 

A class of toxic chemicals called PFAS can contaminate water, farmland, wells, and crops.  These chemicals have been linked to cancer and other diseases and do not break down in the environment.  An organization called PEER (Public Employees for Environmental Responsibility) is leading an effort to probe whether PFAS chemicals are present—and if so, to what degree—on Ag Reserve land and in water sources.  

Testing to date has yielded concerning results. Levels of several forms of PFAS (per- and polyfluoroalkyl substances of which there are thousands) are substantially higher than EPA recommended quantities in drinking water in Poolesville. As a result, the town closed two of its 12 wells. These concerning results also led SCA and Montgomery Countryside Alliance (MCA) to join PEER in January in calling on Montgomery County officials to prohibit the use of certain PFAS-containing fertilizers, called biosolids, on county agricultural land—to prevent further contamination of ground and surface waters.  

January 5, 2024

“Agrivoltaics,” is a new buzzword in solar energy circles. The term applies to land used for agriculture (“agri”) and for generating solar energy (“voltaics”) by solar panels. Agrivoltaics can refer to just a few solar panels mounted on ground-based structures (as opposed to rooftops) or a whole field of them, with crops or animals grazing underneath.

A successful agrivoltaic project has some type of farming thriving adjacent to or under the panels, with the panels generating sufficient power to justify the economics of constructing and installing them. That can be a tall order—but not an impossible one. Agrivoltaics projects are very much in the research phase. The approach is not a fully proven yet, though it’s being viewed as workable under the right circumstances. For now, much of what’s known about agrivoltaics has come from research in dry areas in the western U.S. Some of these areas are sunnier and hotter than the Mid-Atlantic region in the summer and colder in the winter. Thus, agrivoltaic projects that are successful out west aren’t necessarily relevant to the Mid-Atlantic.

Other concerns and potential downsides are emerging. Ground solar panels can disturb and compact soil. They also decrease the amount of sun that reaches plants, affecting photosynthesis. And ground panels can adversely affect how much rain reaches plants and in what pattern. For example, run-off from panels can cause water to pool in some areas. Another practical concern is how farmers get equipment in and around ground panels. All these issues, and others, are being studied. 

Agrivoltaic proposals for the Ag Reserve

In 2020, Montgomery County adopted a zoning change that allowed solar arrays on land zoned for agriculture in Montgomery’s County’s Ag Reserve. The measure was a compromise. It recognized the need to generate more renewable energy in the county while at the same time preserving farming, especially on the county’s best soils. The measure also encouraged more production of rooftop solar. It increased the allowable amount of solar production for landowners from 120% of their personal use to 200%. That meant people could sell any excess solar electricity they generated back into the electricity grid. Community solar arrays, which are smaller than “utility scale” arrays, are also allowed under the measure. They can produce up to 2 megawatts of electricity, and generally require 10 to 12 acres of land. Importantly, placing solar arrays on farming soils designated class 1 or class 2 (high quality soils) is prohibited.