A social cost benefit analysis of grid-scale electrical energy storage projects: A case study

Sidhu, Arjan S.; Pollitt, Michael G.; Anaya, Karim L.

doi:10.1016/j.apenergy.2017.12.085

Cited by 117 publications

(95 citation statements)

References 22 publications

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“…Constraint (7e), however, introduces non-convexities to the feasible solution space. Section V shows how we decompose (7) and deal with the large-scale and non-convex nature of the problem. In the rest of this section, we show how to treat uncertainties in the planning problem.…”

Section: Monmentioning

confidence: 99%

“…The non-convexity and high-dimensionality of Problem (7) presents computational challenges that existing solvers cannot directly handle. Consider that for a time step length of 1 hour and a planning horizon of 20 years, the dimensionality of the sets X i (φ i ) ranges from roughly 175, 000 for the simplest cases (e.g., solar PV or EE) to more than half a million for the more complex ES case.…”

Section: Solution Techniquesmentioning

confidence: 99%

“…Input: P, |A| Output: objective value j ← 0 while j ≤ |A| and objective value = ∅ do if P(j) is feasible then if j > 0 and P(j) > P(j − 1) then objective value ← P(j − 1) end else if j = |A| then objective value ← P(j) end end else objective value ← P(j − 1) end j ← j + 1 end Algorithm 1: Algorithm to sequentially solve the NWAs planning problem. The function P(j) represents Problem (7) with the variable δ = j.…”

Section: B Technique 2: Sequential Solvingmentioning

confidence: 99%

“…Technique 2 consists on convexifying Problem (7) by fixing the year of capacity expansion δ. We sequentially solve Problem (7) for δ ∈ {0, . .…”

Section: B Technique 2: Sequential Solvingmentioning

confidence: 99%

“…Explicitly considering DERs as alternatives to capacity expansion incorporates a typically overlooked value stream to DER projects. Previous works have pointed out that delaying or avoiding capacity expansion could account for a large share of the benefits derived from DER projects (e.g., 20% to 50% for the case in [7]). Thus, accounting for this value stream can push a DER project from "the red" into economic viability.…”

Section: Introductionmentioning

confidence: 99%

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Non-Wire Alternatives: An Additional Value Stream for Distributed Energy Resources

Contreras-Ocaña

Chen

Siddiqi

et al. 2020

IEEE Trans. Sustain. Energy

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Distributed energy resources (DERs) can serve as non-wire alternatives (NWAs) to capacity expansion by managing peak load to avoid or delay traditional expansion projects. However, the value stream derived from using DERs as NWAs is usually not explicitly included in DER planning problems. In this paper, we study a planning problem that co-optimizes investment and operation of DERs and the timing of capacity expansion. By including the timing of capacity expansion as a decision variable, we naturally incorporate NWA value stream of DERs into the planning problem. Furthermore, we show that even though the resulting optimization problem could have millions of variables and is non-convex, an optimal solution can be found by solving a series of smaller linear problems. Finally, we present a NWAs planning problem using real data from the Seattle Campus of the University of Washington.

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Section: Monmentioning

confidence: 99%

Section: Solution Techniquesmentioning

confidence: 99%

Section: B Technique 2: Sequential Solvingmentioning

confidence: 99%

“…Technique 2 consists on convexifying Problem (7) by fixing the year of capacity expansion δ. We sequentially solve Problem (7) for δ ∈ {0, . .…”

Section: B Technique 2: Sequential Solvingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%