Balcony Solar in District of Columbia
DC's GRID Act would exempt balcony solar (in most cases up to 1,200 W) from rooftop-style interconnection approval. Secondary sources report it references UL 3700 by name — the only bill reported to do so — but that isn't yet confirmed from the enrolled text.
Reviewed August 6, 2026 against primary sources. Laws change — the sources below let you re-check.
Would District of Columbia's bill require UL 3700?
No — the bill does not name UL 3700.
Secondary and advocacy sources report the program would be 'based on UL 3700' plus the NEC, with anti-islanding. DC's LIMS text could not be verified from primary source, so we do not yet count DC as naming UL 3700.
Why this matters: “certified by UL” names an organization; “certified to UL 3700” names a plug-in-PV standard. They are not the same claim. Full explainer →
What's still unsettled
- In the Committee on Transportation and the Environment.
- The UL 3700 citation is from secondary sources only; not confirmed from primary text.
Before you buy in District of Columbia
This bill is not law yet — until it passes and takes effect, District of Columbia's existing utility and electrical rules apply. Even once it passes, the gear has to actually be certified to what the law asks, and today no plug-in kit sold in the US carries UL 3700 yet. What "UL 3700 certified" really means →