For all practical purposes, medium- and large-scale solar power projects that expect to take a year to two (or more) for development and construction just got a two year extension on the Investment Tax Credit (ITC).

Per the ‘Bipartisan Budget Act of 2018, Pub. L. 115-123, Div. D, Title I, § 40411, 132 Stat. 150 (BBA 2018)‘, and published in Notice 2018-59, the Internal Revenue Service (IRS) has officially noted that it is “replacing the requirement to place energy property in service by a certain date with a requirement to begin construction by a certain later date.”

Meaning that instead of your solar project having to finish by December 31st, 2019, it must now begin (defined below in two specific ways) on or by that date t0 qualify for 30%. This same logic applies to the follow two years and their 26% and 22% tax credits.

The IRS notes that there are two methods for ‘establishing beginning of construction’ – the Physical Work Test or the Five Percent Safe Harbor.

Onsite physical work can take many forms, however, it does include any of the following “preliminary activities”:

(a) planning or designing; (b) securing financing; (c) exploring; (d) researching; (e) conducting mapping and modeling to assess a resource; (f) obtaining permits and licenses; (g) conducting geophysical, gravity, magnetic, seismic and resistivity surveys; (h) conducting environmental and engineering studies

It is notable that manufacturing of hardware necessary to the project that is done off-site counts toward physical work, including assembly of “racks and rails, inverters, and transformers.” However, if those components come from inventory or are normally held in inventory, then they aren’t allowed to be considered “physical work.”

The Five Percent Safe Harbor provision states that construction will be considered as having begun if the taxpayer has paid or incurred – per Treas. Reg. § 1.461-1(a) – 5% of more of the total cost of the project. This does not include land costs.

Keith Martin of Norton Rose Fulbright notes that an equipment or service purchase – a ‘bare payment’ alone – can account for the 5% rule if it is delivered within 31/2 months.

Once work begins, it must keep going – meeting a continuity requirement.

Real world consequences

Also noted by Martin, is that the IRS guidance is not addressed to the directly owned residential solar power market – as this is the corporate focused Investment Tax Credit, and not the Residential Renewable Energy Tax Credit. However, it does apply to third party owned residential solar systems that solar companies lease or use to sell electricity to homeowners.

In the larger commercial and utility scale projects this ruling will absolutely be put into the spreadsheets of financiers at the utilities, which have explicitly stated these solar power tax benefits are driving their decision-making. For instance, in Xcel Energy’s recent long-term plan – which included solar power bids as low as 2.2¢/kWh – the company stated:

Bidders’ ability to take full advantage of the full federal PTC and ITC combined with falling costs for renewable technologies resulted in a robust pool of wind, solar with battery, and solar bids at unprecedented pricing.

This two year window will give investors and utilities reasonable motivation to invest in more projects, even as end of year dates arrive. And this in turn can have repercussions for fossil generation, as Xcel noted that this would allow it to close two coal plants a decade early.

Conversely, there could also be projects whose timelines are extended. For instance, the above Xcel Energy projects could potentially be pushed back up to two years under the expectation of continued declines in hardware pricing for solar panels, batteries and other components.