Month: October, 2014

23 Oct

Throw Solar, Not Shade

Leyna O'Neill energy, energy management Tags: , , , 0 Comments

Mayor Bill De Blasio’s One City: Built to Last plan has been a positive step forward for New York City’s energy landscape. By 2050, New York City greenhouse gas emissions will be slashed by 80% if all goes according to plan. Achieving that goal will require a huge effort and the implementation of many innovative ideas and technology, and one that we applaud is the addition of solar panels in New York City schools. More specifically, $28 million will be put towards solar installations in 24 schools in New York City, in addition to the 300 city buildings with solar in their future. It’s a plan that De Blasio calls “ambitious, but necessary” and we couldn’t agree more.

Solar installation with a view at NEST in the Lower East Side

Solar installation with a view at NEST in the Lower East Side

As we look forward to the city’s solar expansion, we’d like to acknowledge some of our clients who have long since adopted this idea. In the Fall of 2012, the School Construction Authority (SCA) spearheaded a Resolution A project to bring solar installations to schools using a grant from the Manhattan Borough President’s Office. Resolution A projects are school-specific capital improvement projects designed to enhance the learning environment. Projects can range from security camera systems to library upgrades, and when solar was proposed, we were happy to pitch in.

First things first, three different schools were chosen in the West VillageLower East Side and Harlem as candidates for installations. Bright Power worked with Dattner Architects to perform feasibility studies on four different schools to evaluate the solar potential of each site. While solar technology is a valuable addition to a building, the fact of the matter is not all buildings are created equal when it comes to solar readiness. Many factors must be taken into consideration like roof space, sunlight obstruction and wind exposure. In the end two schools were chosen as viable candidates, NEST in the Lower East Side and PS 154 in Harlem.

Over the following two years, we worked with the SCA,Dattner Architects and the schools themselves to design and oversee construction of the systems. Combined, both sites are home to 251.6 kW-DC ballasted solar arrays featuring a total of 770 Sunpower 327W panels. In one year, each system will produce 146,000 kWh of electricity which will offset 15% of NEST’s annual usage, and 25% at PS154.

PS154’s system is up and running along with an interactive monitoring system providing energy production data from a yearly basis down to 15-minute intervals. Through this tool, users can see that the system has produced 8,760.985 kWh so far in the month of October and that it has offset 227,114.78 light bulbs for an entire day. These metrics are helpful educational tools for understanding the value of renewables, and PS154 has made the information available to all students with a lobby display showing the system production, savings and benefits.

A piece of PS 154’s dashboard shows kWh produced so far this month

The installation at NEST is set to turn on in the coming weeks and we look forward to seeing how this school, dedicated to New Explorations Into Science, Technology and Math will incorporate the system into their rigorous academic curriculum, and of course, we are excited to see the savings achieved here and in the next 24 schools to get the solar treatment.

Leyna O’Neill

20 Oct

13,466 Buildings, One Law: LL87 Has Impact

Mike Brusic energy Tags: , , , 1 Comment

For those unfamiliar, New York City’s Local Law 87, authored in 2009, is an ambitions piece of legislation which requires all buildings over 50,000 square feet to have an energy audit and retrocommissioning performed once every 10 years. A younger member of NYC’s family of green legislation, the law is an extension of Local Law 84, which requires buildings to submit energy data to the city annually.Last year (2013) marked the first year of filings, many of which came in a mad rush towards the end of the year as real estate stakeholders became aware of the new requirements. With deadlines looming, Bright Power submitted the very first Local Law 87 submission to the City, followed by roughly sixty-five more like it. Almost a year later, The Department of Buildings (DOB) has completed its first round of reviews; meanwhile, Bright Power and other providers are rushing to submit the next wave of buildings. So what did we learn?

 

We Have Seen Local Law 87, and It Is Good

By the latest count, 13,466 buildings fall under the umbrella of Local Law 87. That means that over the next 10 years, every single one will have someone crawling through the basement, flipping switches, and asking, “Does this work? Can I make it better?”. Conversations with clients have shown that there is a diverse range of Local Law 87 providers offering a wide range of costs and subjecting buildings to widely different levels of scrutiny. But make no mistake: for many of those thirteen thousand buildings, this is the first time those questions will be asked. And that makes a difference, at any level of service.

 

Local Law 87 Saves Energy

We can’t speak for the city overall, but an analysis of our data shows that for our first year’s portfolio, there was a 6% reduction in total energy use after retrocommissioning work was completed. It’s hard to control for much more than weather and different fuel types (which we did), but it’s an encouraging data point, and over the next few years we’ll keep watching to see what happens. For most of those buildings, a 6% energy savings equates to a two-year payback on the cost of retrocommissioning – or less. What made the difference? It was mostly simple measures: insulating pipes, turning off lights and air conditioning in mechanical spaces where it wasn’t needed, replacing steam traps, and turning down excessive heating and domestic hot water set points. It wasn’t complicated. Someone just had to look.

 

Local Law 87 Is Going To Get More Expensive

In the last few months, we’ve gotten DOB’s official comments on several of our submissions, as well as the opportunity to work with their technical reviewers to understand the standard of care they’re looking for. When the Law (and clarifying Rule) were published, they left providers with big questions – and the responsibility of interpreting the law for their clients. Now we’re getting some answers, and the trend is towards an even higher level of attention to all aspects of buildings. The comments we’ve seen send the message that DOB is serious about implementing this law, and will be looking for thorough, rigorous performance testing down to the level of individual sensors and circuits in buildings. They reserve the right to stop accepting submissions from providers who don’t meet their standards. What does this mean? Immediately, providers will have to raise fees for local law compliance, or be forced out of the market. While some may see this as a financial burden, our experience so far gives us hope that with the support of DOB, we can take a deeper dive into building systems throughout the city and expand on the success of our first year.

 

The Need for Accountability

Ambiguities in the law were a difficult challenge for Local Law 87 providers, who had to balance the interests of their clients on one hand against the unknown whims of the city. For many building systems prevalent in New York City – especially steam systems – no nationally recognized standards exist, and enforcement of the law was an every-firm-for-itself affair. The limited number of providers in the market and specialized nature of the corrective work required also brought up the question of conflicts of interest. The first round of submissions walked an ethical tightrope, at least for the more scrupulous firms. For all the real and potential good Local Law 87 has to offer, its first year put many providers in a tight spot. To that end, there is a strong need for advocacy from providers and clients. We must push the city to adopt standards, create standards where none exists, and clarify what their requirements are in a consistent manner. Ultimately, this will allow for accountability and consistency in the application of the law. That helps keep costs down for property owners, mitigates risk for providers, and simplifies DOB’s seemingly sisyphean task of shepherding thirteen thousand buildings towards a more efficient future.

 

What’s Next?

Alongside more rigorous testing and the (hopeful) creation of consistent standards, there’s talk of expanding the law to buildings under 25,000 square feet, adding thousands of buildings and owners. Just how that might look is still unclear. Those who focus on the upfront cost of implementing the law need to refocus their attention on the value. As our own experience shows, this work, done right, pays for itself in energy savings alone. And that doesn’t even account for the benefits of extending the life of the equipment by running it better. Smaller buildings need this attention at least as much as larger buildings, and they need the expertise of our industry to keep them running cost-effectively and comfortably into the next few decades.

 

Mike Brusic