The current path of Enel toward 100% renewable power generation requires the active support of certain gas power plants (GPPs) to guarantee the adequacy and resiliency of the energy system. In this framework, these existing GPPs represent an opportunity, thanks to a suitable surrounding environment and the existing infrastructure where a synergic coupling with RES is affordable, creating a new concept for a hybrid power plant. Several concepts have arisen for hybrid power plants that combine multiple power generation systems but that currently only envision simple site-sharing or electric connection schemes. More advanced concepts must go beyond this simple co-sharing scheme, creating new process and operational synergies by combining RES with GPP. The adoption of Multi Vector Energy Storage Systems (MuVESS) could support the hybridization of the power generation systems using both electrical and thermal energy and acting as long duration energy storage.
Enel Green Power is looking for innovative solutions that can integrate renewable energy sources (RES) with gas power plants (GPP), to ensure the adequacy and resiliency of the energy system during this transitioning phase towards 100% renewable energy generation. This new concept of transitional hybrid power plant may also include the integration and implementation of Multi Vector Energy Storage Systems (MuVESS) such as thermal and electric energy storage. Ideas should use as GPP reference a standard Open Cycle Gas Turbine (OCGT) or Combined Cycle Gas Turbine (CCGT) design along with a RES system preferably, but not restricted to, photovoltaic (PV).
The focus of innovation for submissions should be the overall configuration of the transitional hybrid power plant as well as the design, integration and use of innovative MuVESS if applicable. Solutions consisting of simple site-sharing or only the use of lithium ion batteries for energy storage will not be considered for award.
The file Annex Challenge Hybrid PP.pdf found under Attachments, below, contains information and diagrams of the two GPP designs considered, as well as simple examples of hybrid power plant configurations to be considered only as general indication and not as exclusive configuration required. The file Annex PV profile.xlsx, also found under Attachments, contains, as an example, power output profiles for a 40MW PV system for the various seasons of the year. All information provided in the annexes is to be considered as an example, and it has the simple aim of giving indications to perform the required analysis. Moreover, the power output profile of the whole system can be considered flat for simplicity of calculation.
Submissions should meet the following Solution Requirements and in particular the proposed solution:
- Must identify real process/plant synergies and equipment integration options (RES+GPP);
- Must consider as RES only commercial solutions with PV the preferred RES;
- Must consider as GPP the reference CCGT or OCGT technologies;
- May also include the integration of innovative Multi Vector Energy Storage Systems (MuVESS) to ensure long duration energy storage (6-18 hours).
- MuVESS and other technologies utilized in a solution should be at an EU Technical Readiness Level (TRL) of 7 or greater;
- Should be scalable;
- Must be sustainable in terms of materials used, environmental impact, emissions and end of life management;
Additionally, submissions will be evaluated based on the following criteria:
- Competitive analysis with alternative or standard solutions as determined by Enel
The submitted proposal should consist of a detailed technical feasibility study and must address and include the following aspects and information for the proposed idea:
- Technical description with synergies identified;
- Integration schemes;
- Basic thermodynamic and process flow calculation;
- Identification and description of operation strategies;
- Performance quantification at system and subsystem level (i.e. MuVESS: Useful Capacity; Useful Life; DoD; Degradation in capacity; Degradation in RoundTrip Efficiency; Ramp up time (hot, warm, cold); Auxiliary consumption in OFF, ON and stand-by status);
- List of projects/application already in operation in case of MuVESS proposed solution to demonstrate its TRL level;
- Description of the sustainability of solution: material used, environment impacts, end of life management issues;
The following deliverables are highly desired but not required:
- List of type of ordinary maintenance needed (replacement, refilling, frequency);
- List of site specific constraints such as orographic limits;
- Heat rate calculation: gas consumption for energy production (mc/kWhe) for hybrid solution vs case with only gas power plant;
- Potential development plan and identification of gaps to cover to pass from the TRL of the solution proposed to fully commercial scale;
- Potential supplier of each components and equipment proposed;
- Cost estimation.
The proposal should not include any personal identifying information (name, username, company, address, phone, email, personal website, resume, etc.) or any information the Solvers may consider as their Intellectual Property they do not want to share.