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
 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
Simplify's Take
What believers are saying
- First-quarter revenue rose 156% year over year to $21.9 million.
- Backlog reached $1.35 billion, improving visibility into future project execution.
- The $300 million Orion investment supports Asset Vault and a 1.5 GW rollout.
What critics are saying
- Energy Vault remains unprofitable, posting a $32.5 million quarterly net loss.
- Convertible notes at roughly $5.18 create dilution if shares stay elevated.
- Japan projects begin construction in 2027, delaying revenue and exposing execution risk.
What makes Energy Vault unique
- Energy Vault combines gravity batteries, BESS, and VaultOS software across utility-scale storage.
- Its Own & Operate model targets recurring tolling revenue instead of one-time project sales.
- The Japan acquisition adds 850 MW of local pipeline plus permitting expertise.
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Your Connections
People at Energy Vault who can refer or advise you
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
↑ 0%2 year growth
↓ -2%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.
Energy Vault Holdings has priced $140 million in 5.250% convertible senior notes due 2031, up from the initially announced $125 million. The grid-scale energy storage company also granted initial purchasers an option to buy an additional $20 million in notes. The notes will convert at an initial rate of 193.1807 shares per $1,000 principal amount, equivalent to a conversion price of approximately $5.18 per share—a 27.5% premium over the company's $4.06 share price on 11 February. Energy Vault expects to receive approximately $135.5 million in net proceeds. The company plans to use proceeds for capped call transactions, redeem $35 million to $45 million of existing convertible debentures, and fund general corporate purposes. Energy Vault may redeem the notes after March 2029 if its share price reaches 130% of the conversion price.
Energy Vault's stock surged nearly 200% over the past year, boosted by a $300 million investment from Orion Infrastructure Capital. Despite this, the company faces challenges, with disappointing quarterly results and mixed analyst opinions. Goldman Sachs raised its price target but kept a "Sell" recommendation. Energy Vault plans to expand with a new subsidiary, Asset Vault, aiming for $100 million in annual EBITDA within 3-4 years, focusing on stable revenue from energy storage projects.
Energy Vault announced the closing of a $300 million preferred equity investment with Orion Infrastructure Capital, launching its "Asset Vault" platform for energy asset management. This move supports Energy Vault's strategy to build, own, and operate energy storage assets, accelerating the deployment of over 1.5GW in key markets. The platform aims to generate over $100 million in recurring annual EBITDA within 3-4 years, enhancing Energy Vault's existing energy storage solutions business.