Tyba
@tybaenergy.bsky.social
Maximize the profitability of energy storage projects with an all-in-one bidding, dispatch, and optimization platform.
tyba.ai
tyba.ai
#RTC+B week 1 was quiet but telling. RT AS unlock incremental revenue with little added risk IF bids are well structured — so you don't clear low-value AS and miss a RT energy spike.
Strategic pricing of AS vs energy is key — and helped us capture $1200/MWh week 1 🔗 www.tyba.ai/resources/gu...
Strategic pricing of AS vs energy is key — and helped us capture $1200/MWh week 1 🔗 www.tyba.ai/resources/gu...
Bid Optimization in RTC+B: Capturing a real-time energy price spike in the first week of RTC+B
Capturing a real-time energy price spike in the first week of RTC+B - without sacrificing real-time Ancillary Service revenue or taking undue risk.
www.tyba.ai
December 18, 2025 at 4:57 PM
#RTC+B week 1 was quiet but telling. RT AS unlock incremental revenue with little added risk IF bids are well structured — so you don't clear low-value AS and miss a RT energy spike.
Strategic pricing of AS vs energy is key — and helped us capture $1200/MWh week 1 🔗 www.tyba.ai/resources/gu...
Strategic pricing of AS vs energy is key — and helped us capture $1200/MWh week 1 🔗 www.tyba.ai/resources/gu...
Lots of talk about storage supporting the grid — now we’re seeing real projects do it and avoid costly infrastructure upgrades. We partnered with White Pine Renewables and PG&E on two #battery projects that relieve overloaded distribution lines and maximize revenue.
Case study: bit.ly/4rlNYSC
Case study: bit.ly/4rlNYSC
[Case study] Grid-Enhancing Optimization with White Pine Renewables & PG&E
An innovative IPP, utility, and Tyba partnered to relieve grid constraints in key CAISO locations, and generate strong financial returns.
www.tyba.ai
November 18, 2025 at 5:57 PM
Lots of talk about storage supporting the grid — now we’re seeing real projects do it and avoid costly infrastructure upgrades. We partnered with White Pine Renewables and PG&E on two #battery projects that relieve overloaded distribution lines and maximize revenue.
Case study: bit.ly/4rlNYSC
Case study: bit.ly/4rlNYSC
RTC+B on your mind? Ours too. Join Tyba’s policy and optimization experts for a live webinar on what RTC+B means for #energystorage operations in ERCOT.
Register >> zoom.us/webinar/regi...
#energysky
Register >> zoom.us/webinar/regi...
#energysky
October 16, 2025 at 7:01 PM
RTC+B on your mind? Ours too. Join Tyba’s policy and optimization experts for a live webinar on what RTC+B means for #energystorage operations in ERCOT.
Register >> zoom.us/webinar/regi...
#energysky
Register >> zoom.us/webinar/regi...
#energysky
Fun weekend in #ERCOT. With outages creeping up as we enter shoulder season and low capacity available to SCED 3 evenings in a row - #energystorage had numerous arbitrage opportunities.
#energysky #🔋
#energysky #🔋
October 13, 2025 at 5:32 PM
Fun weekend in #ERCOT. With outages creeping up as we enter shoulder season and low capacity available to SCED 3 evenings in a row - #energystorage had numerous arbitrage opportunities.
#energysky #🔋
#energysky #🔋
H1'25 in #ERCOT was marked by low volatility and wide spreads between high & low performers.
📉 Avg RT energy prices only exceeded $500/MWh in 3 intervals
🔋 Top earners net $6.19/kW-mo, median earned $2.13
⭐ Top performer captured 90% of their DA TB2, median caught 46%
Deep dive >> bit.ly/3Vmh6dK
📉 Avg RT energy prices only exceeded $500/MWh in 3 intervals
🔋 Top earners net $6.19/kW-mo, median earned $2.13
⭐ Top performer captured 90% of their DA TB2, median caught 46%
Deep dive >> bit.ly/3Vmh6dK
H1 2025 - ERCOT Storage Fleet Performance
Breaking down how battery energy storage systems operated in ERCOT throughout H1 2025, with deep dives into emergy trends and high performing operating strategies.
www.tyba.ai
September 17, 2025 at 4:18 PM
H1'25 in #ERCOT was marked by low volatility and wide spreads between high & low performers.
📉 Avg RT energy prices only exceeded $500/MWh in 3 intervals
🔋 Top earners net $6.19/kW-mo, median earned $2.13
⭐ Top performer captured 90% of their DA TB2, median caught 46%
Deep dive >> bit.ly/3Vmh6dK
📉 Avg RT energy prices only exceeded $500/MWh in 3 intervals
🔋 Top earners net $6.19/kW-mo, median earned $2.13
⭐ Top performer captured 90% of their DA TB2, median caught 46%
Deep dive >> bit.ly/3Vmh6dK
Last week DA energy cleared at a premium to RT in #ERCOT
⬆️ DA cleared $65-200/MWh higher than RT
↕️ Biggest spread was on 8/12: load forecast was high (83GW+) & wind forecast was low (~7GW)
ERCOT was bracing for scarcity that didn't materialized - and many operators are missing DA opportunities.
⬆️ DA cleared $65-200/MWh higher than RT
↕️ Biggest spread was on 8/12: load forecast was high (83GW+) & wind forecast was low (~7GW)
ERCOT was bracing for scarcity that didn't materialized - and many operators are missing DA opportunities.
August 18, 2025 at 4:20 PM
Last week DA energy cleared at a premium to RT in #ERCOT
⬆️ DA cleared $65-200/MWh higher than RT
↕️ Biggest spread was on 8/12: load forecast was high (83GW+) & wind forecast was low (~7GW)
ERCOT was bracing for scarcity that didn't materialized - and many operators are missing DA opportunities.
⬆️ DA cleared $65-200/MWh higher than RT
↕️ Biggest spread was on 8/12: load forecast was high (83GW+) & wind forecast was low (~7GW)
ERCOT was bracing for scarcity that didn't materialized - and many operators are missing DA opportunities.
Excited to see @maeveallsup.bsky.social feature the Distribution Infrastructure Deferral Framework (DIDF) projects we're optimizing in CAISO! An innovative new use case for batteries that can enhance grid reliability without sacrificing returns. #energysky
August 15, 2025 at 3:58 PM
Excited to see @maeveallsup.bsky.social feature the Distribution Infrastructure Deferral Framework (DIDF) projects we're optimizing in CAISO! An innovative new use case for batteries that can enhance grid reliability without sacrificing returns. #energysky
In May, market dynamics in #ERCOT didn’t follow the usual playbook.
AS comprised the majority of revenue (58%)
The most successful operators were dynamic – able to capture RT price spikes when they materialized (looking at you, May 16th), but prioritized AS when it made sense.
#energysky
AS comprised the majority of revenue (58%)
The most successful operators were dynamic – able to capture RT price spikes when they materialized (looking at you, May 16th), but prioritized AS when it made sense.
#energysky
August 13, 2025 at 5:10 PM
In May, market dynamics in #ERCOT didn’t follow the usual playbook.
AS comprised the majority of revenue (58%)
The most successful operators were dynamic – able to capture RT price spikes when they materialized (looking at you, May 16th), but prioritized AS when it made sense.
#energysky
AS comprised the majority of revenue (58%)
The most successful operators were dynamic – able to capture RT price spikes when they materialized (looking at you, May 16th), but prioritized AS when it made sense.
#energysky
Proud to partner with Avangrid to advance their storage modeling efforts.
📍 2,400 locations
🗺️ 7 ISOs
🔋 Simulated participation in DA, RT, and AS markets under varied market conditions
📈 Identified where batteries provide the greatest ROI
www.businesswire.com/news/home/20...
#energysky #storage
📍 2,400 locations
🗺️ 7 ISOs
🔋 Simulated participation in DA, RT, and AS markets under varied market conditions
📈 Identified where batteries provide the greatest ROI
www.businesswire.com/news/home/20...
#energysky #storage
www.businesswire.com
July 29, 2025 at 6:14 PM
Proud to partner with Avangrid to advance their storage modeling efforts.
📍 2,400 locations
🗺️ 7 ISOs
🔋 Simulated participation in DA, RT, and AS markets under varied market conditions
📈 Identified where batteries provide the greatest ROI
www.businesswire.com/news/home/20...
#energysky #storage
📍 2,400 locations
🗺️ 7 ISOs
🔋 Simulated participation in DA, RT, and AS markets under varied market conditions
📈 Identified where batteries provide the greatest ROI
www.businesswire.com/news/home/20...
#energysky #storage
The clean energy industry will still move forward post #OBBB.
A reduction in new supply only leads to an increase in electricity prices... which means generation and storage assets increase in value. #energysky
www.tyba.ai/resources/in...
A reduction in new supply only leads to an increase in electricity prices... which means generation and storage assets increase in value. #energysky
www.tyba.ai/resources/in...
Moving forward in spite of the OBBB - Tyba Energy
Tyba’s CEO, Michael Baker, on ways that energy markets must evolve, and how developers can move forward with confidence, after the passing of the "One Big Beautiful Bill" (OBBB).
www.tyba.ai
July 17, 2025 at 4:25 PM
The clean energy industry will still move forward post #OBBB.
A reduction in new supply only leads to an increase in electricity prices... which means generation and storage assets increase in value. #energysky
www.tyba.ai/resources/in...
A reduction in new supply only leads to an increase in electricity prices... which means generation and storage assets increase in value. #energysky
www.tyba.ai/resources/in...
April in #ERCOT:
📈 Top 20 earners avg $4.75/kW, capturing 89% of DA TB2 and 64% of RT TB2
🔋 Top 20 performers (by TB2 capture) avg $4.39/kW, capturing 99% of DA TB2 and 71% of RT TB2
🕝 RT energy comprised 50% of fleet revenue (up from 43% in Q1 and 26% in 2024)
#energysky
📈 Top 20 earners avg $4.75/kW, capturing 89% of DA TB2 and 64% of RT TB2
🔋 Top 20 performers (by TB2 capture) avg $4.39/kW, capturing 99% of DA TB2 and 71% of RT TB2
🕝 RT energy comprised 50% of fleet revenue (up from 43% in Q1 and 26% in 2024)
#energysky
July 16, 2025 at 4:07 PM
April in #ERCOT:
📈 Top 20 earners avg $4.75/kW, capturing 89% of DA TB2 and 64% of RT TB2
🔋 Top 20 performers (by TB2 capture) avg $4.39/kW, capturing 99% of DA TB2 and 71% of RT TB2
🕝 RT energy comprised 50% of fleet revenue (up from 43% in Q1 and 26% in 2024)
#energysky
📈 Top 20 earners avg $4.75/kW, capturing 89% of DA TB2 and 64% of RT TB2
🔋 Top 20 performers (by TB2 capture) avg $4.39/kW, capturing 99% of DA TB2 and 71% of RT TB2
🕝 RT energy comprised 50% of fleet revenue (up from 43% in Q1 and 26% in 2024)
#energysky
Who caught ERCOT's Friday night (9pm) price spike?
Caused by a wind miss (4-5 GW wind generation miss vs. DA forecasted P50 value), #ERCOT needed to quickly replace the capacity - RT energy prices shot up the market cap ($5K).
Caused by a wind miss (4-5 GW wind generation miss vs. DA forecasted P50 value), #ERCOT needed to quickly replace the capacity - RT energy prices shot up the market cap ($5K).
July 14, 2025 at 6:02 PM
Who caught ERCOT's Friday night (9pm) price spike?
Caused by a wind miss (4-5 GW wind generation miss vs. DA forecasted P50 value), #ERCOT needed to quickly replace the capacity - RT energy prices shot up the market cap ($5K).
Caused by a wind miss (4-5 GW wind generation miss vs. DA forecasted P50 value), #ERCOT needed to quickly replace the capacity - RT energy prices shot up the market cap ($5K).
Yesterday, our CEO presented at FERC's conference.
Energy storage is fast becoming the grid’s most valuable resource — but realizing its full potential depends on:
⚡ Software to navigate market and grid complexity in real time
🎨 ISO and market design that unlocks and values its flexibility
Energy storage is fast becoming the grid’s most valuable resource — but realizing its full potential depends on:
⚡ Software to navigate market and grid complexity in real time
🎨 ISO and market design that unlocks and values its flexibility
July 10, 2025 at 3:40 PM
Yesterday, our CEO presented at FERC's conference.
Energy storage is fast becoming the grid’s most valuable resource — but realizing its full potential depends on:
⚡ Software to navigate market and grid complexity in real time
🎨 ISO and market design that unlocks and values its flexibility
Energy storage is fast becoming the grid’s most valuable resource — but realizing its full potential depends on:
⚡ Software to navigate market and grid complexity in real time
🎨 ISO and market design that unlocks and values its flexibility
Anyone catch the red-out across #ERCOT today? Around 3:40pm, LMPs were at the market cap ($5K) across TX 🔌💡
High prices were driven by RTORPA, an adder that pays if you're online with headroom to discharge. Batteries with SoC and no AS obligations get the full value of the adder. #energysky
High prices were driven by RTORPA, an adder that pays if you're online with headroom to discharge. Batteries with SoC and no AS obligations get the full value of the adder. #energysky
July 1, 2025 at 12:35 AM
Anyone catch the red-out across #ERCOT today? Around 3:40pm, LMPs were at the market cap ($5K) across TX 🔌💡
High prices were driven by RTORPA, an adder that pays if you're online with headroom to discharge. Batteries with SoC and no AS obligations get the full value of the adder. #energysky
High prices were driven by RTORPA, an adder that pays if you're online with headroom to discharge. Batteries with SoC and no AS obligations get the full value of the adder. #energysky
Q1 2025 was mild for #BESS in ERCOT. Top line revenue was down, and the spread of outcomes was wide.
💵 Top earner net $16.06/kW, >3x median
📈 Top performer captured 99% of their DA TB2, ~2x median
💡 64%+ fleet revenue was made in energy products
Deep dive: www.tyba.ai/resources/ca...
#energysky
💵 Top earner net $16.06/kW, >3x median
📈 Top performer captured 99% of their DA TB2, ~2x median
💡 64%+ fleet revenue was made in energy products
Deep dive: www.tyba.ai/resources/ca...
#energysky
Q1 2025 - ERCOT Storage Fleet Performance
Breaking down how battery energy storage systems operated in ERCOT (Q1 2025), with deep dives into high performing operating strategies.
www.tyba.ai
June 26, 2025 at 4:34 PM
Q1 2025 was mild for #BESS in ERCOT. Top line revenue was down, and the spread of outcomes was wide.
💵 Top earner net $16.06/kW, >3x median
📈 Top performer captured 99% of their DA TB2, ~2x median
💡 64%+ fleet revenue was made in energy products
Deep dive: www.tyba.ai/resources/ca...
#energysky
💵 Top earner net $16.06/kW, >3x median
📈 Top performer captured 99% of their DA TB2, ~2x median
💡 64%+ fleet revenue was made in energy products
Deep dive: www.tyba.ai/resources/ca...
#energysky
TODAY the prequalification window for NJ’s GSESP is open.
What to know:
⚡ NJ aims to contract 1GW of transmission-scale storage
📅 Winners will get a fixed $/MW-yr rate for 15-yrs
💲 Selection mainly based on bid price, consideration for community benefits
🔋 4-hr discharge, must COD within 30 months
What to know:
⚡ NJ aims to contract 1GW of transmission-scale storage
📅 Winners will get a fixed $/MW-yr rate for 15-yrs
💲 Selection mainly based on bid price, consideration for community benefits
🔋 4-hr discharge, must COD within 30 months
June 25, 2025 at 4:21 PM
TODAY the prequalification window for NJ’s GSESP is open.
What to know:
⚡ NJ aims to contract 1GW of transmission-scale storage
📅 Winners will get a fixed $/MW-yr rate for 15-yrs
💲 Selection mainly based on bid price, consideration for community benefits
🔋 4-hr discharge, must COD within 30 months
What to know:
⚡ NJ aims to contract 1GW of transmission-scale storage
📅 Winners will get a fixed $/MW-yr rate for 15-yrs
💲 Selection mainly based on bid price, consideration for community benefits
🔋 4-hr discharge, must COD within 30 months
Despite limited price spikes in #ERCOT, #energystorage leaned on energy arb for 69% of revenue in March.
At a glance:
📈 Top revenue generators earned $6.26/kW — over 3x the fleet median
🎯 Top performers captured 115% of its DA TB2, while the median came in around 48%
March 2025 breakdown ⬇️
At a glance:
📈 Top revenue generators earned $6.26/kW — over 3x the fleet median
🎯 Top performers captured 115% of its DA TB2, while the median came in around 48%
March 2025 breakdown ⬇️
June 17, 2025 at 8:45 PM
Despite limited price spikes in #ERCOT, #energystorage leaned on energy arb for 69% of revenue in March.
At a glance:
📈 Top revenue generators earned $6.26/kW — over 3x the fleet median
🎯 Top performers captured 115% of its DA TB2, while the median came in around 48%
March 2025 breakdown ⬇️
At a glance:
📈 Top revenue generators earned $6.26/kW — over 3x the fleet median
🎯 Top performers captured 115% of its DA TB2, while the median came in around 48%
March 2025 breakdown ⬇️
Many ERCOT #🔋 operators know there can be a delay between go-live, and qualifying for AS. But, with a flexible optimizer, you can start generating revenue right away with RT energy-only. Given RT volatility - this provides major upside as you prepare for AS. #energysky
www.tyba.ai/resources/gu...
www.tyba.ai/resources/gu...
Accelerate the path to revenue generation for your BESS
Generate revenue from day your energy storage system goes live with Real-Time energy only operation - and prepare for Ancillary Service launch in parallel.
www.tyba.ai
May 29, 2025 at 6:10 PM
Many ERCOT #🔋 operators know there can be a delay between go-live, and qualifying for AS. But, with a flexible optimizer, you can start generating revenue right away with RT energy-only. Given RT volatility - this provides major upside as you prepare for AS. #energysky
www.tyba.ai/resources/gu...
www.tyba.ai/resources/gu...
Any #energystorage folks thinking about the MA DOER RFP opening in July?
🔋 Seeking projects ranging in size from 40MW–1GW
💵 Projects will earn fixed annual payments per Clean Peak Energy Certificate (CPEC)
🙌 Battery owners retain operational control
Full breakdown: www.tyba.ai/resources/gu...
🔋 Seeking projects ranging in size from 40MW–1GW
💵 Projects will earn fixed annual payments per Clean Peak Energy Certificate (CPEC)
🙌 Battery owners retain operational control
Full breakdown: www.tyba.ai/resources/gu...
Massachusetts’ path to 5GW of energy storage - Tyba Energy
The MA DOER announced the launch date for the first in a series solicitations for grid-scale energy storage. Here is what you need to know.
www.tyba.ai
May 22, 2025 at 3:49 PM
Any #energystorage folks thinking about the MA DOER RFP opening in July?
🔋 Seeking projects ranging in size from 40MW–1GW
💵 Projects will earn fixed annual payments per Clean Peak Energy Certificate (CPEC)
🙌 Battery owners retain operational control
Full breakdown: www.tyba.ai/resources/gu...
🔋 Seeking projects ranging in size from 40MW–1GW
💵 Projects will earn fixed annual payments per Clean Peak Energy Certificate (CPEC)
🙌 Battery owners retain operational control
Full breakdown: www.tyba.ai/resources/gu...
DA energy is becoming a bigger part of the revenue stack for #energystorage operators in ERCOT. In January, DA energy accounted for 26% of total storage revenue in ERCOT, up from just 9% in 2024.
But DA comes with increased risk.
How are operators managing this risk - or not?
#energysky #🔋
But DA comes with increased risk.
How are operators managing this risk - or not?
#energysky #🔋
Managing Risk with Day-Ahead Energy Bidding - Tyba Energy
Day-Ahead energy bidding in ERCOT presents a great revenue opportunity for energy storage operators to capture incremental upside — but only when paired with disciplined risk management.
www.tyba.ai
May 7, 2025 at 5:04 PM
DA energy is becoming a bigger part of the revenue stack for #energystorage operators in ERCOT. In January, DA energy accounted for 26% of total storage revenue in ERCOT, up from just 9% in 2024.
But DA comes with increased risk.
How are operators managing this risk - or not?
#energysky #🔋
But DA comes with increased risk.
How are operators managing this risk - or not?
#energysky #🔋
2024 wasn’t a record year for battery storage revenue — but smart operators stood out.
Top assets made $88.96/kW (2.5x median), with 65% of revenue from AS.
Winners shifted to energy arb, in keeping with evolving market dynamics.
More in our breakdown: www.tyba.ai/resources/ca...
#energysky #🔋
Top assets made $88.96/kW (2.5x median), with 65% of revenue from AS.
Winners shifted to energy arb, in keeping with evolving market dynamics.
More in our breakdown: www.tyba.ai/resources/ca...
#energysky #🔋
2024 Storage Performance | ERCOT
Breaking down how energy storage asset operated in ERCOT throughout 2024, with deep dives into high performing operating strategies, quarterly trends, and interesting operating days.
www.tyba.ai
April 9, 2025 at 7:12 PM
2024 wasn’t a record year for battery storage revenue — but smart operators stood out.
Top assets made $88.96/kW (2.5x median), with 65% of revenue from AS.
Winners shifted to energy arb, in keeping with evolving market dynamics.
More in our breakdown: www.tyba.ai/resources/ca...
#energysky #🔋
Top assets made $88.96/kW (2.5x median), with 65% of revenue from AS.
Winners shifted to energy arb, in keeping with evolving market dynamics.
More in our breakdown: www.tyba.ai/resources/ca...
#energysky #🔋
December 2024 in #ERCOT was fairly quiet, with storage assets making $1.18/kW (avg) & capturing 33% of RT TB2. Top 10 revenue generators made 81% of revenue from RT energy but captured only 51% of RT TB2 — meaning significant opportunity was left on the table #energysky
www.tyba.ai/resources/ca...
www.tyba.ai/resources/ca...
ERCOT | December 2024 - Tyba Energy
Breaking down how energy storage asset operated in ERCOT, with deep dives into high performing operating strategies.
www.tyba.ai
March 18, 2025 at 4:56 PM
December 2024 in #ERCOT was fairly quiet, with storage assets making $1.18/kW (avg) & capturing 33% of RT TB2. Top 10 revenue generators made 81% of revenue from RT energy but captured only 51% of RT TB2 — meaning significant opportunity was left on the table #energysky
www.tyba.ai/resources/ca...
www.tyba.ai/resources/ca...
With an increasing amount of #🔋 revenue tied to energy arbitrage, how can operators ensure they are selling the most capacity into the highest peaks and charging into the lowest troughs? Our Dynamic PQ Bidding is an algorithmic way to do just that.
#energysky
www.tyba.ai/resources/gu...
#energysky
www.tyba.ai/resources/gu...
Maximizing energy arbitrage with Price-Quantity Bidding - Tyba Energy
Tyba recently rolled out an enhanced bidding algorithm – Dynamic Price-Quantity Bidding - that enables energy storage assets to maximize revenue by making price the determinant of how much the battery...
www.tyba.ai
March 6, 2025 at 5:02 PM
With an increasing amount of #🔋 revenue tied to energy arbitrage, how can operators ensure they are selling the most capacity into the highest peaks and charging into the lowest troughs? Our Dynamic PQ Bidding is an algorithmic way to do just that.
#energysky
www.tyba.ai/resources/gu...
#energysky
www.tyba.ai/resources/gu...
When assessing storage performance, how do you know what good looks like? Total revenue doesn’t tell the full story. In #ERCOT, every node has a different amount of volatility (ie. arbitrage opportunity). Optimal performance is maximizing opportunity capture.
#energysky
#energysky
Benchmarking Energy Storage Performance
When it comes to energy storage, it can be difficult to evaluate performance, and accurately assess what good looks like. We break down three key benchmarks.
www.tyba.ai
February 25, 2025 at 7:30 PM
When assessing storage performance, how do you know what good looks like? Total revenue doesn’t tell the full story. In #ERCOT, every node has a different amount of volatility (ie. arbitrage opportunity). Optimal performance is maximizing opportunity capture.
#energysky
#energysky
The shift to energy arbitrage as the primary form of revenue generation for #energystorage assets in #ERCOT continues 🔋
In Nov 2024 top assets made the majority of revenue from RT energy (per ERCOT 60-day disclosure data). Most was concentrated on two key days.
#energysky
In Nov 2024 top assets made the majority of revenue from RT energy (per ERCOT 60-day disclosure data). Most was concentrated on two key days.
#energysky
February 13, 2025 at 7:52 PM
The shift to energy arbitrage as the primary form of revenue generation for #energystorage assets in #ERCOT continues 🔋
In Nov 2024 top assets made the majority of revenue from RT energy (per ERCOT 60-day disclosure data). Most was concentrated on two key days.
#energysky
In Nov 2024 top assets made the majority of revenue from RT energy (per ERCOT 60-day disclosure data). Most was concentrated on two key days.
#energysky