Solar tours this weekend will showcase much more than solar panels

solar panels on a house

This house looks ordinary, but it boasts a superpower: its solar panels produce all the energy the homeowners use.

Innovative lighting, rain gardens, mini-split heat pumps, electric vehicles, and high-tech appliances—what do these have to do with solar panels? They will all be featured at homes and businesses opening their doors to the public on Saturday and Sunday, October 6 and 7, as part of the National Solar Tour.

You can find open houses and tours near you using this map or the listing on this site. For those in Northern Virginia, a downloadable booklet describes more than 40 solar and green homes participating in the Metro DC tour. The website also tells you where you can buy a hard copy if you prefer. Some homes didn’t make it into the booklet, which went to press over the summer.

The American Solar Energy Society (ASES) started the National tour more than two decades ago, but the Washington metro area tour is now in its 28thyear. This is pretty astonishing if you think about where solar technology was in 1990.

As a “tourist” during the early days, I remember the gee-whiz feeling I got exploring the handiwork of early solar adopters. It is the tragedy of my life that I live in the woods and can’t have my own solar panels. Fortunately, the tours have always been about more than just generating electricity. Back then, they had to be, because not many people could afford solar PV. Good design and energy efficiency took center stage.

Through the tours I learned about passive solar houses, solar hot water, insulation made from old blue jeans, natural light via “daylighting,” the incorporation of recycled materials into beautiful tile and countertops, eco-friendly siding materials, and how to live with nature using native plants and rain gardens. More recently the tours have branched out to include electric vehicles and green roofs.

This year’s Metro DC tour booklet includes new homes built to Passive House standards and loaded with cool features, but to my mind the more interesting entries are ordinary homes that have undergone a thoughtful retrofit. Here is a description of one of the latter:

This 1950s ranch house has solar PV, solar hot water, solar space heating, a cupola/solar chimney, solar daylight tubes, solar attic fan, solar sidewalk lights, south facing energy efficient windows, 2 highly efficient energy star minisplit heat pumps (26-SEER), a fireplace insert wood stove, exterior insulation finishing system (EIFS), CFL/LED lighting, kitchen counter tops made from recycled glass, and recycled floor tiles in the foyer and basement. The yard has a 1000-gallon cistern, food forest, 2 rain gardens, permeable walkways, 2 rain barrels, and 2 compost piles. There is also an aquaponics system, a Chevy Volt and a plug-in Prius. Installation by Greenspring Energy.

These renovations suggest an important point: reducing energy use doesn’t require us to tear down our homes and start over. And thank heavens for that, since most of us aren’t going to do that anyway.

Besides which, existing homes make up so much of our housing stock that making big efficiency gains depends on how well we retrofit and weatherize old homes. So if a house built in the 50s can be turned into a solar energy showcase, the rest of us should be taking notes.

Workshop Explores Local Government Clean Energy Financing Alternatives

Representatives from six local governments in Northern Virginia attended a workshop on budget-neutral, clean energy alternative financing options for local governments at the Fairfax County Government Center on September 7.

Presenters discussed financing approaches that can help local governments meet their energy and climate goals while saving taxpayer dollars. Specifically, the workshop covered Power Purchase Agreements (PPAs) for solar projects and Energy Savings Performance Contracts (ESPCs) for a range of energy efficiency retrofits. These budget-neutral tools allow local governments to invest in long-term energy savings without the up-front costs.

Elected officials and local government staff, as well as representatives of the Northern Virginia Regional Commission and community members attended the workshop organized by the Great Falls Group of the Sierra Club with the assistance of Fairfax Supervisor John Foust. The workshop was also televised for remote viewing.

The workshop video and background materials are available online.

Clean Energy Financing Workshop

More than 50 local government staff and community members attended the workshop organized by the Great Falls Group of the Sierra Club

Solar PPAs available for most Northern Virginia localities

 A PPA is a contract in which a local government agrees to purchase solar-generated energy from a solar developer at a set price over the term of the contract (typically 15-25 years). In his presentation, Eric Hurlocker of the GreeneHurlocker Law Firm explained why PPAs are attractive to local governments; they require no capital outlay, involve no fuel price risk, and make effective use of tax incentives, allowing local governments to focus on their core functions.

Eric Hurlocker

Eric Hurlocker attributes the surge in VA PPA projects to approaching sunset of the federal solar tax credit

Patricia Innocenti, Deputy Procurement Director for Fairfax County, stated the county will send out its first solar PPA request for proposals (RFP) for the Reston Community Center before the end of the year. This RFP also will encompass other Fairfax County government buildings. Fairfax County plans to draft the RFP so that other jurisdictions can ride the contract following contract award.

PPAs are governed by the terms of a pilot program applicable to customers of Dominion Energy Virginia, including localities that are members of the Virginia Energy Purchasing Governmental Association (VEPGA).

Click to view the fact sheet on on-site solar options for Virginia’s local governments.

Opportunities for local governments to receive state-level technical support for ESPCs

Nam Nguyen of the Virginia Department of Mines, Minerals, and Energy (DMME) presented the many advantages of ESPCs. The ESPC is a “financial mechanism to pay for today’s facility upgrades with tomorrow’s energy savings,” said Nguyen. Third-party contractors, called energy service companies (ESCOs), take on the investment risk, and state law requires the contractors to guarantee the energy savings for localities. DMME calculates that ESPCs have provided $860 million in energy savings in Virginia since 2001.

Nam Nguyen

Nam Nguyen, VA DMME, explains the many advantages of ESPCs and the technical and project management support his department provides to local governments

Nguyen made a Fact Sheet on ESPCs available to participants.

Justin Moss, Energy Coordinator for the Fairfax County Public Schools, said his department considers ESPCs “a very viable option to help replace aging equipment when we lack bond funding for that.” Their ESPC for 106 schools has saved $29 million in energy costs to date.

While smaller jurisdictions often know ESPCs could save them millions of dollars, they fear they lack staff and expertise to manage ESPC projects. This is where DMME comes in. Nguyen explained that his department provides technical and engineering support to ensure governments are empowered to negotiate good terms for the contract. DMME also provides hands-on project management support throughout the duration of the contract. Since there is no charge for requesting an initial energy audit to determine the feasibility of pursuing an ESPC project at government-owned facilities, it is a wonder why more Virginia localities do not take greater advantage of this financing tool.

Click to view the full-length workshop video.