Summer 2026
Intern – Electricity Market Optimization & Price Forecasting
Posted on 4/3/2026
Energy Vault
51-200 employees
Utility-scale gravity-based energy storage and EMS
Compensation Overview
$30 - $35/hr
Vienna, VA, USA
Remote
Bachelor's, Master's, PhD
 Data & Analytics (1) |
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- Pursuing a MS or PhD program in Electrical Engineering, Operations Research, Computer Science, Applied Mathematics, or a closely related field.
- BS in Applied Mathematics, Engineering (Electrical Engineering, Computer Science, Computer Engineering), or similar field is required.
- Strong background in at least one of the following: Optimization methods (mixed-integer, stochastic, robust, or convex optimization) with applications to electricity market problems such as SCED, battery dispatch, or energy trading; or Time-series forecasting applied to energy systems (electricity price, load, or renewable generation forecasting).
- Proficiency in Python is required
- Familiarity with at least one commercial or open-source optimization solver (Gurobi, CPLEX, CBC, etc.) or modern ML/forecasting frameworks (XGBoost, scikit-learn, PyTorch, etc.), depending on your area of focus.
- Solid understanding of electricity market fundamentals (energy markets, ancillary services, LMPs, settlement).
- No Travel is required
- Comfortable thriving in fast-paced, rapid growth environments.
- A passion for sustainability, our mission, and our vision is a bonus!
- Must successfully pass a pre-employment background check.
- Energy Vault participates in E-Verify.
- Assist in the development and refinement of optimization models for energy storage dispatch and trading, incorporating electricity market rules and operational constraints from CAISO and/or ERCOT.
- Support formulation of stochastic, robust, or mixed-integer programming models to optimize physical and financial trading positions across market products (energy, ancillary services, capacity).
- Assist in developing or enhancing time-series forecasting models for electricity prices leveraging modern ML/statistical approaches.
- Help implement and backtest alternative dispatch and trading strategies using historical market data and simulation frameworks.
- Document model assumptions, methodologies, and results clearly to support knowledge transfer and team review.
- Participate in team discussions and contribute analytical insights in an agile work environment.
Energy Vault provides utility-scale energy storage solutions using gravity-based storage and also sells batteries. Its gravity battery stores energy by lifting heavy blocks to higher elevations to create potential energy, while its Energy Management Systems software monitors, controls, and optimizes dispatch across assets. It differentiates itself by pairing gravity storage with EMS software and pursuing a licensing model with large partners to enable global, large-scale deployments, alongside a battery product line. Its goal is to lower the levelized cost of energy and improve grid reliability for utilities, independent power producers, and large industrial users.
Company Size
51-200
Company Stage
IPO
Headquarters
Lugano, Switzerland
Founded
2017
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Simplify's Take
What believers are saying
- August 11, 2026 revenue jumped 104% year-over-year to $17.4 million.
- Backlog hit $2 billion on August 10, 2026, with 1.25 GW Texas demand.
- Energy Vault raised 2026 guidance to $270 million-$310 million and lifted cash targets.
What critics are saying
- John Brian Clark securities litigation from 2024 still hangs over Energy Vault’s disclosures.
- One hyperscaler Texas contract concentrates execution risk before 2027 revenue recognition.
- Build-own-operate projects demand financing; a failed close could starve growth and trigger dilution.
What makes Energy Vault unique
- Energy Vault combines B-VAULT batteries, gravity storage, and VaultOS software under one platform.
- August 7, 2026 Texas deal bundles batteries, grid-forming power, and AI controls for hyperscalers.
- Asset Vault converts projects into long-duration recurring EBITDA, unlike pure equipment sellers.
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Benefits
401(k) Retirement Plan
401(k) Company Match
Health Insurance
Dental Insurance
Vision Insurance
Life Insurance
Disability Insurance
Health Savings Account/Flexible Spending Account
Unlimited Paid Time Off
Flexible Work Hours
Remote Work Options
Paid Vacation
Paid Sick Leave
Paid Holidays
Hybrid Work Options
Stock Options
Company Equity
Wellness Program
Mental Health Support
Gym Membership
Phone/Internet Stipend
Home Office Stipend
Professional Development Budget
Conference Attendance Budget
Reimbursement for home office equipment, phone, and internet expenses
Relocation Assistance
Growth & Insights and Company News
6 month growth
↓ -2%1 year growth
↓ -1%2 year growth
↓ -2%Energy Vault reported second-quarter 2026 revenue of $17.4 million, up 104% year-over-year, exceeding consensus estimates. GAAP gross margins reached 31%, whilst adjusted gross margin hit 38.6%, up 166% year-over-year. The company's contract backlog expanded to $2 billion, growing 47% quarter-over-quarter and 107% year-over-year, driven by demand from AI compute infrastructure. Energy Vault secured a 1.25 GW contract for integrated power, storage and software infrastructure supporting hyperscaler contracts in Texas, expected to generate $500-$600 million revenue in the second half of 2026 and 2027. Cash reserves grew 26% quarter-over-quarter to $148 million, marking the sixth consecutive quarterly increase. Global megawatts under operation, construction and ready-to-build reached approximately 1.1 GW, up 476% year-over-year. The company raised full-year 2026 revenue guidance to $270-$310 million and GAAP gross margin guidance to 20%-25%.
SB Investment Advisers (UK) Ltd sold 3 million shares of Energy Vault Holdings in the first quarter, an estimated $12.38 million trade, according to a 15 May SEC filing. The fund still holds 15.5 million shares valued at $51.27 million. Energy Vault shares have surged approximately 500% over the past year, trading at $5.93 as of 15 May. The company develops gravity-based energy storage systems for grid-scale applications and reported first-quarter revenue of $21.9 million, up 156% year-over-year, with backlog reaching $1.35 billion. Despite revenue growth, Energy Vault remains unprofitable, posting a quarterly net loss of $32.5 million. The company projects its portfolio could eventually generate over $180 million in recurring annual EBITDA as it positions itself as an energy infrastructure and AI power platform.
Energy Vault Holdings has announced its entry into Japan through the acquisition of an 850 MW battery energy storage system project pipeline from a domestic developer. The deal provides immediate access to one of the fastest-growing storage markets amongst developed economies. The portfolio comprises 350 MW of advanced-stage projects expected to begin construction in the second half of 2027 and reach commercial operation in the second half of 2028, plus 500 MW of early-stage projects. The transaction includes an established local team with expertise in land rights, permitting and utility interconnections. Energy Vault will integrate its VaultOS energy management software and B-VAULT AC platform with the acquired projects. The company's global portfolio now exceeds 1 GW under operation or construction, expected to generate over $180 million in recurring annual EBITDA.
Energy Vault Holdings reported a fourth-quarter loss of $0.13 per share, slightly missing the Zacks Consensus Estimate of a loss of $0.12 per share. This represents an 8.33% earnings surprise. The loss compares favourably to a loss of $0.35 per share in the same quarter last year. The alternative energy company posted revenues of $153.31 million for the quarter ended December 2025, surpassing consensus estimates by 0.27%. This marks a significant increase from year-ago revenues of $33.47 million. Energy Vault shares have declined approximately 25% year-to-date, compared to the S&P 500's 2.1% decline. The company currently holds a Zacks Rank of four, indicating expected near-term underperformance. Analysts project a loss of $0.50 per share on revenues of $214.5 million for the current fiscal year.
Energy Vault has closed an upsized $150 million convertible senior notes offering, up from the initially announced $125 million, to strengthen its balance sheet and support its own-and-operate strategy. The grid-scale energy storage company used part of the proceeds to repay approximately $45 million in principal outstanding under its Yorkville convertible debenture arrangements, improving financial flexibility. The company executed a capped call derivative transaction at a 100% premium, setting an effective conversion price of $8.12 per share to reduce potential dilution. Energy Vault reported strong preliminary 2025 results, including above-consensus revenue and gross margin, with positive adjusted EBITDA in Q4 whilst increasing cash and liquidity sequentially throughout the year. The company will release full-year 2025 results on 17 March 2026.