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Will Solar Projects Need Tax Equity in the Future?

Apr 20, 2012

I've written on NREL's RE Project Finance website about the need for tax equity to finance renewable energy projects before — particularly solar. I was under the assumption that tax equity may be a thing of the past. Now, I'm not so sure. You may know that the investment tax credit (ITC) declines from 30 percent to 10 percent of eligible capital costs in 2017. In addition, at the end of 2012, the current 50 percent "bonus" depreciation expires, further alleviating the need for tax equity. While those circumstances lessen the need for tax equity, they likely don't eliminate it.

So, how much tax equity will be needed after the tax benefits shift? The analysis in Table 1 attempts to answer that question by calculating the value of tax benefits under the current and future incentive structures for a $100 solar project. The value of the tax benefits is about $52 under the current incentive levels, or 52 percent of the initial project costs. In 2017, after the ITC and depreciation benefits revert to their former levels, the value of the tax benefits drop to $35, or 35 percent of the initial project costs.

In developing the analysis, I assume a 35 percent tax rate and a 10 percent internal rate of return (IRR) requirement (i.e., the discount rate that sets the net present value (NPV) to $0). The tax benefits represent the combined value of the ITC and the depreciation schedule known as the five-year Modified Accelerated Cost Recovery System (MACRS). 

Table 1. Value of Current and Future Tax Benefits
Year 0 1 2 3 4 5 6
Project Cost $100            
Tax Rate $35            
IRR Target 10%            
Current Tax Equity Requirement
ITC   30%          
ITC Value   $30          
Depreciable Basis   $85          
5-Yr. MACRS + Bonus Schedule   60.0% 16.0% 9.6% 5.8% 5.8% 2.9%
Depr. Value (schedule × basis × tax rate)   $18 $5 $3 $2 $2 $1
Total Tax Benefit (depr. value + ITC)   $48 $5 $3 $2 $2 $1
Tax Equity Inv. that Earns 10% IRR on Tax Benefits ($52)            
Future Tax Equity Requirement
ITC   10%          
ITC Value   $10          
Depreciable Basis   $95          
5-Yr. MACRS + Bonus Schedule   20.0% 32.0% 19.2 11.5% 11.5% 5.8%
Depr. Value (schedule × basis × tax rate)   $7 $11 $6 $4 $4 $2
Total Tax Benefit (depr. value + ITC)   $17 $11 $6 $4 $4 $2
Tax Equity Inv. that Earns 10% IRR on Tax Benefits ($35)            

Table 1 goes out six years, as "five-year" MACRS actually carries into year six of the project (using "half-year" convention, the benefit assumes the project starts at the mid-point of year one). The value of the depreciation schedule in Table 1 is represented by the allowed annual deduction × the tax rate × the "depreciable basis." The depreciable basis, per IRS code, is calculated as the eligible project costs less one-half the ITC value. When the ITC is 30 percent, or $30 in our example, the depreciable basis equals $85 [i.e., $100 – ($30/2)]. When the ITC declines to 10 percent, or $10, the depreciable basis will increase to $95 [i.e., $100 – ($10/2)]. Importantly, this negates some of the reduction in the ITC.

At 35 percent of initial project costs, the value of the tax benefits—even after they decline—may be too large to absorb within the project or cost-effectively carry forward. To compete in the market, solar developers may need to monetize the tax benefits via a third-party investment known as tax equity. Until now, tax equity has been in short supply.

The reason this is important is the industry is looking ahead for new asset classes to finance renewable energy projects such as securitization, long-term debt instruments, real estate investment trusts (REITs), and master limited partnerships (MLPs). These instruments, which each effectively pool investments and sell off tradable securities, hold the promise of accessing vast swaths of as-yet untapped capital. By creating a liquid, tradable ownership share, or security, these asset classes reduce risk and enable investment by casual investors or money managers who are not necessarily experts in renewable energy (think pension funds).

Unfortunately, use of these mechanisms may be hindered if tax equity capital is needed to monetize the tax benefits. The tax benefits are critical to lowering the cost of energy from a renewable project but unfortunately may not flow to the owners of the new asset classes mentioned. For example, the tax credits cannot be easily transferred to passive investors such as owners of stocks or other securities. Therein lies the rub—new asset classes such as securitization offer the potential to tap low-cost capital, but traditional support mechanisms such as tax credits and accelerated depreciation may complicate the pathway.

However, accessing tax equity may be getting easier, through baby steps, along the path towards securitization and other asset class application. First, Clean Power Finance (CPF) is a financing entity that effectively pool projects to a size necessary to access tax equity. CPF offers a suite of software tools to evaluate system design and project economics. Developers that use CPF's tools may also qualify for project financing. Financing qualification relies on passing certain due diligence requirements regarding installation practices and project evaluation. According to CPF, their partnership enables developers to tap tax equity and debt investment pooled by the firm. CPF investors include Kleiner Perkins and Google, among others.

Second, SolarCity has been developing an asset-backed securitization of its project portfolio. The company was targeting "early 2012," although no public information has been made this year as of this publication date. The financing facility would securitize the stream of projected customer payments and could be sold to a wide array of investors. Although, this move represents the pooling of one developer's portfolio, enabling market investment in a securitized product could ease the way for smaller, regional players who don't have the capability to raise such capital on their own.

This blog was originally published on NREL's Renewable Energy Project Finance and was republished with permission.

Image: Kajano via Shutterstock

The information and views expressed in this blog post are solely those of the author and not necessarily those of or the companies that advertise on this Web site and other publications. This blog was posted directly by the author and was not reviewed for accuracy, spelling or grammar.

Michael Mendelsohn is a Senior Analyst with the National Renewable Energy Laboratory’s project finance team and expert in PV and CSP financing. His expertise spans 20 years and encompasses various aspects of renewable energy technologies, markets, policies, and finance.


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